2020 Census State Redistricting Data 

(Public Law 94-171) Summary File

2020 Census of Population and Housing

Technical Documentation

Issued February 2021

SFSRD/20-01

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Additional 

Information

For additional information concerning the Census Redistricting Data 

Program and the Public Law 94-171 Redistricting Data, contact the 

Census Redistricting and Voting Rights Data Office, U.S. Census 

Bureau, Washington, DC, 20233 or phone 1-301-763-4039.

For additional information concerning data disc software issues, 

contact the COTS Integration Branch, Applications Development and 

Services Division, Census Bureau, Washington, DC, 20233 or phone 

1-301-763-8004.

For additional information concerning data downloads, contact 

the Dissemination Outreach Branch of the Census Bureau at 

<cedsci.feedback@census.gov> or the Call Center at 1-800-823-8282. 

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U.S. Department of Commerce

Wynn Coggins,

Acting Agency Head

U.S. CENSUS BUREAU

Dr. Ron Jarmin,

Acting Director

2020 Census State Redistricting Data 

(Public Law 94-171) Summary File Issued February 2021

2020 Census of Population and Housing SFNRD/20-01

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Suggested Citation

FILE:

2020 Census State 

Redistricting Data

 (Public Law 94-171)

Summary File

Prepared by the 

U.S. Census Bureau, 2021

TECHNICAL DOCUMENTATION:

2020 Census State 

Redistricting Data

 (Public Law 94-171)

Technical Documentation

Prepared by the 

U.S. Census Bureau, 2021

U.S. CENSUS BUREAU

Dr. Ron Jarmin,

Acting Director

Dr. Ron Jarmin,

Deputy Director and 

Chief Operating Officer

Albert E. Fontenot, Jr.,

Associate Director

for Decennial Census Programs

Deborah M. Stempowski,

Assistant Director for Decennial Census Programs

Operations and Schedule Management

Michael T. Thieme,

Assistant Director for Decennial Census Programs 

Systems and Contracts

Jennifer W. Reichert,

Chief, Decennial Census Management Division

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Abstract 1-1

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Chapter 1.

Abstract

CONTENTS

Citation ....................................................................... 1-1

Type of File .................................................................... 1-1

Public Law 94-171 and the 2020 Census Redistricting Data Program ................. 1-1

Data Confidentiality ............................................................ 1-1

Subject Content ................................................................ 1-2

Geographic Content ............................................................ 1-2

User Updates .................................................................. 1-3

Related Products ............................................................... 1-3

CITATION

2020 Census State Redistricting Data (Public Law 94-171) Summary File—[name of state1] 

[machine-readable data files].

Prepared by the U.S. Census Bureau, 2021.

TYPE OF FILE

Summary Statistics.

PUBLIC LAW 94-171 AND THE 2020 CENSUS REDISTRICTING DATA PROGRAM

Public Law 94-171, enacted in 1975, directs the U.S. Census Bureau to make special preparations to provide redistricting data needed by the 50 states.1 It specifies that within 1 year 

following Census Day, the Census Bureau must send the governor and legislative leadership in 

each state the data they need to redraw districts for the U.S. Congress and state legislatures.

To meet this legal requirement, the Census Bureau set up a program that affords state officials 

an opportunity before each decennial census to define the small areas for which they wish to 

receive census population totals for redistricting purposes. Officials may receive data for voting districts (e.g., election precincts, wards) and state house and senate districts, in addition 

to standard census geographic areas such as counties, cities, census tracts, and blocks. State 

participation in defining areas is voluntary and nonpartisan.

For further information on Public Law 94-171 and the 2020 Census Redistricting Data 

Program, see <www.census.gov/programs-surveys/decennial-census/about/rdo/program

-management.html>.

DATA CONFIDENTIALITY

The Census Bureau operates under Title 13 of the U.S. Code, which prohibits the publication 

of any results in which an individual’s data can be identified. The Census Bureau has been and 

continues to be a leader in the science of protecting respondent data. To ensure protection of 

respondent data in present and future data releases, the Census Bureau has launched a major 

modernization of our disclosure avoidance techniques by deploying differential privacy, also 

1 For the 2020 Census, the Census Bureau will provide redistricting data for the 50 states, the District of Columbia, and the 

Commonwealth of Puerto Rico.

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1-2 Abstract

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

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known as formal privacy, to the 2020 Census Public Law 94-171 redistricting data. To learn 

more about differential privacy, please read Chapter 7, 2020 Census: Operational Overview 

and Disclosure Avoidance. 

SUBJECT CONTENT

This product contains summary statistics on population and housing subjects. Population 

counts for the total population and for the population 18 years and over are presented by race 

and by Hispanic or Latino origin, and for the total group quarters population by major group 

quarters type. The product includes one housing table showing occupancy status (occupied, 

vacant). The official titles of the six tables are: 

P1. Race

P2. Hispanic or Latino, and Not Hispanic or Latino by Race

P3. Race for the Population 18 Years and Over

P4. Hispanic or Latino, and Not Hispanic or Latino by Race for the Population 18 Years and 

 Over

P5. Group Quarters Population by Major Group Quarters Type

H1. Occupancy Status

Chapter 3, Subject Locator, contains a list of subjects included in the 2020 Public Law 94-171 

tables. The Subject Locator can be used to find out which tables provide the information 

needed. Chapter 4, Summary Level Hierarchy Chart and Sequence List, provides specifications 

on the content and hierarchical relationships of the geographic elements that are required 

to tabulate and summarize the Public Law 94-171 data. Chapter 5, List of Tables (Matrices), 

provides information on the table numbers and titles, the applicable universe, and the total 

number of data cells for each table. Chapter 6, Data Dictionary, provides record codes, geographic area codes, area characteristics, and special area codes contained within the dataset, 

as well as endnotes and a table (matrix) section featuring metadata for each variable included 

in the dataset. 

The Public Law 94-171 data were derived from questions asked on the 2020 Census questionnaire. Chapter 7, 2020 Census: Operational Overview and Disclosure Avoidance, provides 

information on the 2020 Census operational design, including overviews and links to the 2020 

Census Operational Plan and the 35 operation-specific Detailed Operational Plans used to 

manage the 2020 Census. Descriptions of the 35 operations are provided in Appendix C, Data 

Collection and Processing Procedures.

GEOGRAPHIC CONTENT

This file provides data in a hierarchical sequence down to the block level. A hierarchical presentation shows the geographic areas in a superior/subordinate structure and is depicted by 

indenting the lines. For example:

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Abstract 1-3

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

State2

 County3

 Voting district/Remainder 

 County subdivision4

 Place/Remainder

 Census tract 

 Block group 

 Block

This file also provides data in an inventory format for areas such as county subdivisions, 

places, school districts, and state legislative districts.

See Chapter 4, “Summary Level Hierarchy Chart and Sequence List,” for the full geographic 

content of this product and Appendix A.

USER UPDATES

User updates supply data users with additional or corrected information that becomes 

available after the technical documentation and files are prepared. They are issued as Data 

Notes, Geography Notes, and Technical Documentation Notes in a numbered series. User 

updates issued after the release of this documentation are available on the Census Bureau’s 

Internet site <www.census.gov/programs-surveys/decennial-census/data/errata-notes.html>.

RELATED PRODUCTS

The 2020 Census State Redistricting Data (Public Law 94-171) Summary File is available 

through the Census Bureau’s data exploration platform, data.census.gov. The geographic support products are available through the Geography Program section on <www.census.gov> 

and include block maps, state legislative district with voting district maps, tract maps, school 

district maps, TIGER/Line shapefiles, block assignment files and corresponding name lookup tables, and 2010 to 2020 Census block relationship files. These geographic products have 

been delivered to official recipients of the Redistricting Data Program on removable media in 

support of redistricting efforts. There are no related printed reports or listings.

To request assistance with these products, contact the Census Redistricting & Voting Rights 

Data Office at <rdo@census.gov> or 1-301-763-4039. 

2 State, District of Columbia, or Puerto Rico.

3 Parish in Louisiana; borough, census area, city and borough, or municipality in Alaska; and municipio in Puerto Rico. In Maryland, 

Missouri, Nevada, and Virginia, one or more cities are independent of counties and are treated as statistical equivalents of counties. 

The entire District of Columbia, which has no counties, is treated as a county equivalent. 4 In Puerto Rico, some county subdivisions (barrios-pueblos and barrios) are divided into subminor civil divisions (subbarrios).

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How to Use This Product 2-1

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Chapter 2.

How to Use This Product

CONTENTS

Introduction ................................................................... 2-1

Data Format and Access Tools ................................................... 2-1

Geographic Hierarchy Primer . . . . . . . . . .......................................... 2-1

Geographic Header Record ...................................................... 2-2

National Standard Codes ........................................................ 2-2

Summary Level Hierarchy Chart .................................................. 2-3

Voting Districts ................................................................ 2-3

 Voting District Indicator ...................................................... 2-3

Data Structure and Segmentation ................................................ 2-3

Figures:

2-1. Standard Hierarchy of Census Geographic Entities ............................ 2-5

2-2. Hierarchy of American Indian, Alaska Native, and Native Hawaiian Areas ........ 2-5

2-3. File Set Structure Schematic ............................................... 2-6

2-4. Geographic Header Record ................................................. 2-7

INTRODUCTION

This chapter serves as a guide for data users to both the file and the technical documentation. 

Novice users trying to understand how to use the documentation and the file should read this 

chapter first.

DATA FORMAT AND ACCESS TOOLS

The 2020 Census Redistricting Data (Public Law 94-171) Summary File was initially delivered to 

official recipients of the Redistricting Data Program on removable media and through an online 

embargoed dataset. Later, the U.S. Census Bureau released the data to the public in a userfriendly format through the Census Bureau’s data exploration platform, data.census.gov. 

These data are also available in pipe-delimited, 8-bit Unicode Transformation Format (UTF-8), 

which can easily be imported into other software packages. The pipe-delimited files are available 

for download via File Transfer Protocol (FTP). It is recommended that only experienced data 

users download these data from the FTP site.

GEOGRAPHIC HIERARCHY PRIMER

The smallest component for all census geography is the block. Figure 2-1 provides an example of the various geographic hierarchies used, all aggregated from the block level. The chart 

allows a graphical examination of the hierarchies. The lines show how blocks aggregate to 

block groups, which then aggregate to census tracts and then counties. This means that 

blocks, block groups, and tracts are uniquely identified within counties and, therefore, do not 

cross county boundaries. School districts, on the other hand, can cross jurisdictional boundaries, but they do not cross state lines. Figure 2-2 may be used in a similar fashion to see the 

hierarchy for the American Indian, Alaska Native, and Native Hawaiian areas. 

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GEOGRAPHIC HEADER RECORD

The Geographic Header Record, Figure 2-4, lists each field and provides its data dictionary reference name, maximum field size, and data type. For the definition of each field, see 

Chapter 6, Data Dictionary. The possible data types are:

A Alphabetic: letters of the alphabet only. 

N Numeric: numbers only.

A/N Alphanumeric: letters of the alphabet or numbers or (in selected fields) 

punctuation characters.

The presence or absence of an “X” in each summary level column is a guide to the presence 

or absence of geographic information for that particular summary level. For example, in the 

column for summary level 040, which is the summary level for State, we see “X” for the first 

14 fields, indicating that there is information for those fields at the State level. In the County 

field, there is no “X,” indicating that there is no information for counties at the State level.

NATIONAL STANDARD CODES

The geographic header includes fields for the National Standards (NS) Code Series. These 

fields contain a Geographic Names Information System (GNIS)1 identifier code that has been 

adopted as part of a national standard. The GNIS is the nation’s official geographic names 

repository database and has been designated by the U.S. Board on Geographic Names as the 

official source of geographic names for use by the federal government and its contractors. 

Federal agencies are expected to adopt the GNIS identifier code as a standard code for public 

and federal data exchange. The fields identified in the geographic header record are: 

Field length Field name

8 State (NS)

8 County (NS)

8 County Subdivision (NS)

8 Subminor Civil Division (NS)

8 Estate (NS)

8 Consolidated City (NS)

8 Place (NS)

8 American Indian Area/Alaska Native Area/Hawaiian Home Land (NS)

8 American Indian Tribal Subdivision (NS)

8 Alaska Native Regional Corporation (NS)

1 The GNIS identifier for states, counties, and equivalent areas are supplemental codes that do not replace the federal standard 

two-digit state and three-digit county codes also appearing in the header. The Census Bureau will continue to maintain and use in 

its unique geographic identifiers the existing five-digit codes for place, county subdivision, consolidated city, Alaska Native Regional 

Corporation, subminor civil division, and estate, and will assign and issue codes for new entities to meet customer needs, even though 

these codes are not official or part of the newer American National Standards Institute (ANSI) standards. The Census Bureau also will 

continue to maintain the existing four-digit codes for American Indian, Alaska Native, and Native Hawaiian area and three-digit codes 

for American Indian tribal subdivision.

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2020 Census State Redistricting Data (Public Law 94-171) Summary File 

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SUMMARY LEVEL HIERARCHY CHART

The Summary Level Hierarchy Chart (Chapter 4) identifies each geographic level and provides 

the code that is in the SUMLEV field. The last geographic level listed in the sequence identifies the geographic level defined by the summary level; the prior geographic levels (if any) 

simply identify the geographic hierarchy. When reading the Summary Level Hierarchy Chart, 

it is important to recognize that hyphens (-) separate the individual geographic levels, while 

slashes separate different types of geography (such as place/remainder) within the same 

geographic level.

See two examples below:

• 140 State-County-Census Tract

• 730 State-County-Voting District/Remainder-County Subdivision-Place/RemainderCensus Tract

In summary level 140, the record contains data for a census tract, within a county, within a 

state. Census tracts are uniquely numbered within a county and do not cross county boundaries. Since counties do not cross state boundaries, this is a simple application. Thus, summary 

level 140 provides data for a complete census tract.

In summary level 730, the geography is more complex. Working backward through the hierarchy, we see that summary level 730 indicates a record for the portion of a census tract, within 

a specific place or remainder portion of a specific county subdivision portion, within a specific 

voting district or remainder portion, within a county, within a state.

VOTING DISTRICTS

Voting district is the generic name for an area, such as a precinct or ward that is established 

by state and local governments for purposes of elections. States participating in the 2020 

Census Redistricting Data Program provided the Census Bureau with boundaries, codes, and 

optional names for their voting districts. The voting district code is a six-character field that 

may contain any ASCII character.

Voting District Indicator

States participating in the 2020 Census Redistricting Data Program have the option to indicate 

whether the voting district boundaries they submitted to the Census Bureau are “pseudo” or 

“actual.” Pseudo voting districts are those that were approximated. These approximated voting districts are represented in the voting district indicator field as a “P.” Actual voting districts represent ground truth and are represented in this field as an “A.” Actual voting districts 

are additionally identified by an asterisk (*) appended to the voting district name in the Area 

Name-Legal/Statistical Area Description (LSAD) Term-Part Indicator. If a state did not provide 

voting districts for a county, this field is blank.

DATA STRUCTURE AND SEGMENTATION

The data in the redistricting and other 2020 Census summary files are segmented. This is done 

so that individual files do not have more than 255 fields, allowing users to more easily import 

them into spreadsheet or database software. The segmentation information discussed here 

applies to the FTP files. The summary file data and the corresponding geographic information 

are known as the file set. Because of the large size of the tables, the file set is broken into four 

files. These files consist of:

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• Geographic header file

• File01 (Tables P1 and P2)

• File02 (Tables P3, P4, and H1)

• File03 (Table P5)

To get the complete dataset for the 2020 Census State Redistricting Data (Public Law 94-171) 

Summary File users must download all four files.

It is easiest to think of the file set as a single file that has been broken into four physical parts: 

the geographic header file, file01, file02, and file03. If downloading the 2020 Census National 

Summary File of Redistricting Data from the FTP site (for experienced data users) or from 

removable media (for official recipients), users should select all four files.

A unique logical record number (LOGRECNO in the geographic header) is assigned to all 

files for a specific geographic entity. This field is the key that links records across all four files. 

Besides the logical record number, other identifying fields also are carried over from the geographic header file to the table files. These are file identification (FILEID), state/U.S. abbreviation (STUSAB), characteristic iteration (CHARITER), and characteristic iteration file sequence 

number (CIFSN). See Figure 2-3 for an example.

The geographic header is standard across all electronic data products from the 2020 Census. 

Note that some fields in the Redistricting products are not filled. For example, the CHARITER 

field is used in other 2020 Census products; in the 2020 Census State Redistricting Data 

(Public Law 94-171) Summary File, it is always coded as 000.

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* Refer to the “Hierarchy of American Indian, Alaska Native, and Native Hawaiian Areas.”

REGIONS

DIVISIONS

Counties

Census Tracts

Block Groups

STATES

NATION

Census Blocks

ZIP Code Tabulation Areas

School Districts

County Subdivisions

Subminor Civil Divisions

Congressional Districts

Voting Districts

AIANNH Areas* (American Indian, Alaska Native, 

Native Hawaiian Areas)

Urban Areas

Core Based

Statistical Areas

Places

State Legislative Districts

Urban Growth Areas

Figure 2-1.

Standard Hierarchy of Census Geographic Entities

Figure 2-2. 

Hierarchy of American Indian, Alaska Native, and Native Hawaiian Areas

Oklahoma Tribal 

Statistical Areas

States

Tribal Subdivisions Tribal Block 

Groups

Tribal Census 

Tracts

American Indian Areas (Federal)/

Off-Reservation Trust Lands

Alaska Native Regional Corporations/ 

Alaska Native Village Statistical Areas/

Hawaiian Home Lands

American Indian Reservations 

(state)/State Designated 

Tribal Statistical Areas

 CENSUS BLOCKS 

Tribal Designated Statistical Areas

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FIGURE 2-3. FILE SET STRUCTURE SCHEMATIC

Geographic Header File File01 File02 File03

Record 1

FILEID FILEID FILEID FILEID

STUSAB STUSAB STUSAB STUSAB

CHARITER CHARITER CHARITER CHARITER

CIFSN CIFSN CIFSN CIFSN

LOGRECNO (Record 1) LOGRECNO (Record 1) LOGRECNO (Record 1) LOGRECNO (Record 1)

Remainder of geographic 

header record for geographic area XTable P1 (71 cells)

Table P2 (73 cells)

Table P3 (71 cells)

Table P4 (73 cells)

Table H1 (3 cells) Table P5 (10 cells)

Record 2

FILEID FILEID FILEID FILEID

STUSAB STUSAB STUSAB STUSAB

CHARITER CHARITER CHARITER CHARITER

CIFSN CIFSN CIFSN CIFSN

LOGRECNO (Record 2) LOGRECNO (Record 2) LOGRECNO (Record 2) LOGRECNO (Record 2)

Remainder of geographic 

header record for geographic area YTable P1 (71 cells)

Table P2 (73 cells)

Table P3 (71 cells)

Table P4 (73 cells)

Table H1 (3 cells) Table P5 (10 cells)

Record 3

FILEID FILEID FILEID FILEID

STUSAB STUSAB STUSAB STUSAB

CHARITER CHARITER CHARITER CHARITER

CIFSN CIFSN CIFSN CIFSN

LOGRECNO (Record 3) LOGRECNO (Record 3) LOGRECNO (Record 3) LOGRECNO (Record 3)

Remainder of geographic 

header record for geographic area ZTable P1 (71 cells)

Table P2 (73 cells)

Table P3 (71 cells)

Table P4 (73 cells)

Table H1 (3 cells) Table P5 (10 cells)

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FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

040 050 060 067 140 150 155

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X X X X X X

FIPS County Class Code COUNTYCC 2 A/N X X X X X X

County (NS) COUNTYNS 8 A/N X X X X X X

County Subdivision (FIPS) COUSUB 5 A/N X X

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N X X

County Subdivision (NS) COUSUBNS 8 A/N X X

Subminor Civil Division (FIPS) SUBMCD 5 A/N X

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N X

Subminor Civil Division (NS) SUBMCDNS 8 A/N X

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N

FIPS Consolidated City Class 

Code CONCITCC 2 A/N

Consolidated City (NS) CONCITNS 8 A/N

Place (FIPS) PLACE 5 A/N X

FIPS Place Class Code PLACECC 2 A/N X

Place (NS) PLACENS 8 A/N X

Census Tract TRACT 6 A/N X X

Block Group BLKGRP 1 A/N X

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FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

040 050 060 067 140 150 155

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N

Subdivision (NS) AITSNS 8 A/N

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X X X X X

Indicator MEMI 1 A/N X X X X X X

Combined Statistical Area CSA 3 A/N X X X X X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X X X X X

Area

NECTA Metropolitan/

NECTA 5 A/N X

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N X

and Town Area CNECTA 3 A/N X

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FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

040 050 060 067 140 150 155

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N X

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X

Indicator NECTAPCI 1 A/N X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N

School District (Secondary) SDSEC 5 A/N

School District (Unified) SDUNI 5 A/N

Public Use Microdata Area PUMA 5 A/N

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2-10 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

040 050 060 067 140 150 155

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 18 of

247
How to Use This Product 2-11

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

160 170 172 230 280 281 282

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X

FIPS County Class Code COUNTYCC 2 A/N X

County (NS) COUNTYNS 8 A/N X

County Subdivision (FIPS) COUSUB 5 A/N

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N

County Subdivision (NS) COUSUBNS 8 A/N

Subminor Civil Division (FIPS) SUBMCD 5 A/N

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N

Subminor Civil Division (NS) SUBMCDNS 8 A/N

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N X X

FIPS Consolidated City Class 

Code CONCITCC 2 A/N X X

Consolidated City (NS) CONCITNS 8 A/N X X

Place (FIPS) PLACE 5 A/N X X

FIPS Place Class Code PLACECC 2 A/N X X

Place (NS) PLACENS 8 A/N X X

Census Tract TRACT 6 A/N

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 19 of

247
2-12 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

160 170 172 230 280 281 282

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X X X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X X X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X X X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X X X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X X X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N X

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N X

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N X

Subdivision (NS) AITSNS 8 A/N X

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N X

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N X

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N X

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X

Indicator MEMI 1 A/N X

Combined Statistical Area CSA 3 A/N X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X

Area

NECTA Metropolitan/

NECTA 5 A/N

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N

and Town Area CNECTA 3 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 20 of

247
How to Use This Product 2-13

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

160 170 172 230 280 281 282

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X X

Indicator NECTAPCI 1 A/N X X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N

School District (Secondary) SDSEC 5 A/N

School District (Unified) SDUNI 5 A/N

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 21 of

247
2-14 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

160 170 172 230 280 281 282

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 22 of

247
How to Use This Product 2-15

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

283 285 286 288 500 510 511

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X X X X

FIPS County Class Code COUNTYCC 2 A/N X X X X

County (NS) COUNTYNS 8 A/N X X X X

County Subdivision (FIPS) COUSUB 5 A/N

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N

County Subdivision (NS) COUSUBNS 8 A/N

Subminor Civil Division (FIPS) SUBMCD 5 A/N

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N

Subminor Civil Division (NS) SUBMCDNS 8 A/N

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N

FIPS Consolidated City Class 

Code CONCITCC 2 A/N

Consolidated City (NS) CONCITNS 8 A/N

Place (FIPS) PLACE 5 A/N

FIPS Place Class Code PLACECC 2 A/N

Place (NS) PLACENS 8 A/N

Census Tract TRACT 6 A/N X

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 23 of

247
2-16 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

283 285 286 288 500 510 511

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X X X X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X X X X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X X X X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X X X X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X X X X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N

Subdivision (NS) AITSNS 8 A/N

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X X X

Indicator MEMI 1 A/N X X X X

Combined Statistical Area CSA 3 A/N X X X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X X X

Area

NECTA Metropolitan/

NECTA 5 A/N

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N

and Town Area CNECTA 3 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 24 of

247
How to Use This Product 2-17

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

283 285 286 288 500 510 511

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N

Indicator NECTAPCI 1 A/N

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N X X X

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N

School District (Secondary) SDSEC 5 A/N

School District (Unified) SDUNI 5 A/N

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 25 of

247
2-18 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

283 285 286 288 500 510 511

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 26 of

247
How to Use This Product 2-19

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

512 521 531 532 541 550 553

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X X

FIPS County Class Code COUNTYCC 2 A/N X X

County (NS) COUNTYNS 8 A/N X X

County Subdivision (FIPS) COUSUB 5 A/N X

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N X

County Subdivision (NS) COUSUBNS 8 A/N X

Subminor Civil Division (FIPS) SUBMCD 5 A/N

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N

Subminor Civil Division (NS) SUBMCDNS 8 A/N

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N X

FIPS Consolidated City Class 

Code CONCITCC 2 A/N X

Consolidated City (NS) CONCITNS 8 A/N X

Place (FIPS) PLACE 5 A/N X X

FIPS Place Class Code PLACECC 2 A/N X X

Place (NS) PLACENS 8 A/N X X

Census Tract TRACT 6 A/N

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 27 of

247
2-20 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

512 521 531 532 541 550 553

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N X

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N X

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N X

Subdivision (NS) AITSNS 8 A/N X

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X

Indicator MEMI 1 A/N X X

Combined Statistical Area CSA 3 A/N X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X

Area

NECTA Metropolitan/

NECTA 5 A/N X

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N X

and Town Area CNECTA 3 A/N X

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 28 of

247
How to Use This Product 2-21

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

512 521 531 532 541 550 553

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N X

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X X

Indicator NECTAPCI 1 A/N X X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N X X X X X X X

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N

School District (Secondary) SDSEC 5 A/N

School District (Unified) SDUNI 5 A/N

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 29 of

247
2-22 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

512 521 531 532 541 550 553

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 30 of

247
How to Use This Product 2-23

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

570 571 572 610 612 613 614

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X X

FIPS County Class Code COUNTYCC 2 A/N X X

County (NS) COUNTYNS 8 A/N X X

County Subdivision (FIPS) COUSUB 5 A/N X

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N X

County Subdivision (NS) COUSUBNS 8 A/N X

Subminor Civil Division (FIPS) SUBMCD 5 A/N

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N

Subminor Civil Division (NS) SUBMCDNS 8 A/N

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N

FIPS Consolidated City Class 

Code CONCITCC 2 A/N

Consolidated City (NS) CONCITNS 8 A/N

Place (FIPS) PLACE 5 A/N X

FIPS Place Class Code PLACECC 2 A/N X

Place (NS) PLACENS 8 A/N X

Census Tract TRACT 6 A/N

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 31 of

247
2-24 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

570 571 572 610 612 613 614

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N

Subdivision (NS) AITSNS 8 A/N

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X

Indicator MEMI 1 A/N X

Combined Statistical Area CSA 3 A/N X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X

Area

NECTA Metropolitan/

NECTA 5 A/N X

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N X

and Town Area CNECTA 3 A/N X

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 32 of

247
How to Use This Product 2-25

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

570 571 572 610 612 613 614

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N X

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X

Indicator NECTAPCI 1 A/N X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N X X X

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N X X X X

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N X

School District (Secondary) SDSEC 5 A/N X

School District (Unified) SDUNI 5 A/N X

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 33 of

247
2-26 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

570 571 572 610 612 613 614

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 34 of

247
How to Use This Product 2-27

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

615 616 617 618 619 620 622

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X

FIPS County Class Code COUNTYCC 2 A/N X

County (NS) COUNTYNS 8 A/N X

County Subdivision (FIPS) COUSUB 5 A/N

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N

County Subdivision (NS) COUSUBNS 8 A/N

Subminor Civil Division (FIPS) SUBMCD 5 A/N

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N

Subminor Civil Division (NS) SUBMCDNS 8 A/N

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N X

FIPS Consolidated City Class 

Code CONCITCC 2 A/N X

Consolidated City (NS) CONCITNS 8 A/N X

Place (FIPS) PLACE 5 A/N

FIPS Place Class Code PLACECC 2 A/N

Place (NS) PLACENS 8 A/N

Census Tract TRACT 6 A/N

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 35 of

247
2-28 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

615 616 617 618 619 620 622

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N

Subdivision (NS) AITSNS 8 A/N

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X

Indicator MEMI 1 A/N X

Combined Statistical Area CSA 3 A/N X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X

Area

NECTA Metropolitan/

NECTA 5 A/N

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N

and Town Area CNECTA 3 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 36 of

247
How to Use This Product 2-29

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

615 616 617 618 619 620 622

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N

Indicator NECTAPCI 1 A/N

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N X X X X X

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N X X

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N X

School District (Secondary) SDSEC 5 A/N X

School District (Unified) SDUNI 5 A/N X

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 37 of

247
2-30 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

615 616 617 618 619 620 622

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 38 of

247
How to Use This Product 2-31

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

623 624 625 626 627 628 629

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X

FIPS County Class Code COUNTYCC 2 A/N X

County (NS) COUNTYNS 8 A/N X

County Subdivision (FIPS) COUSUB 5 A/N X

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N X

County Subdivision (NS) COUSUBNS 8 A/N X

Subminor Civil Division (FIPS) SUBMCD 5 A/N

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N

Subminor Civil Division (NS) SUBMCDNS 8 A/N

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N X

FIPS Consolidated City Class 

Code CONCITCC 2 A/N X

Consolidated City (NS) CONCITNS 8 A/N X

Place (FIPS) PLACE 5 A/N X

FIPS Place Class Code PLACECC 2 A/N X

Place (NS) PLACENS 8 A/N X

Census Tract TRACT 6 A/N

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 39 of

247
2-32 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

623 624 625 626 627 628 629

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N

Subdivision (NS) AITSNS 8 A/N

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X

Indicator MEMI 1 A/N X

Combined Statistical Area CSA 3 A/N X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X

Area

NECTA Metropolitan/

NECTA 5 A/N X

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N X

and Town Area CNECTA 3 A/N X

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 40 of

247
How to Use This Product 2-33

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

623 624 625 626 627 628 629

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N X

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X

Indicator NECTAPCI 1 A/N X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N X X X X X X X

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N X

School District (Secondary) SDSEC 5 A/N X

School District (Unified) SDUNI 5 A/N X

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 41 of

247
2-34 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

623 624 625 626 627 628 629

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 42 of

247
How to Use This Product 2-35

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

 dictionary 

reference

Maximum 

field size Data type

Summary levels

630 631 632 633 634 635 636

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X X X X X

FIPS County Class Code COUNTYCC 2 A/N X X X X X

County (NS) COUNTYNS 8 A/N X X X X X

County Subdivision (FIPS) COUSUB 5 A/N X

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N X

County Subdivision (NS) COUSUBNS 8 A/N X

Subminor Civil Division (FIPS) SUBMCD 5 A/N X

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N X

Subminor Civil Division (NS) SUBMCDNS 8 A/N X

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N

FIPS Consolidated City Class 

Code CONCITCC 2 A/N

Consolidated City (NS) CONCITNS 8 A/N

Place (FIPS) PLACE 5 A/N

FIPS Place Class Code PLACECC 2 A/N

Place (NS) PLACENS 8 A/N

Census Tract TRACT 6 A/N X X

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 43 of

247
2-36 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

 dictionary 

reference

Maximum 

field size Data type

Summary levels

630 631 632 633 634 635 636

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N X

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N X

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N X

Subdivision (NS) AITSNS 8 A/N X

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N X

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N X

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N X

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X X X X

Indicator MEMI 1 A/N X X X X X

Combined Statistical Area CSA 3 A/N X X X X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X X X X

Area

NECTA Metropolitan/

NECTA 5 A/N

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N

and Town Area CNECTA 3 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 44 of

247
How to Use This Product 2-37

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

 dictionary 

reference

Maximum 

field size Data type

Summary levels

630 631 632 633 634 635 636

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N

Indicator NECTAPCI 1 A/N

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N X X X X X

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N X X

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N X X

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N X X

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N

School District (Secondary) SDSEC 5 A/N

School District (Unified) SDUNI 5 A/N

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 45 of

247
2-38 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

 dictionary 

reference

Maximum 

field size Data type

Summary levels

630 631 632 633 634 635 636

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 46 of

247
How to Use This Product 2-39

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

637 638 639 640 641 642 643

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X X X

FIPS County Class Code COUNTYCC 2 A/N X X X

County (NS) COUNTYNS 8 A/N X X X

County Subdivision (FIPS) COUSUB 5 A/N X

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N X

County Subdivision (NS) COUSUBNS 8 A/N X

Subminor Civil Division (FIPS) SUBMCD 5 A/N X

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N X

Subminor Civil Division (NS) SUBMCDNS 8 A/N X

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N

FIPS Consolidated City Class 

Code CONCITCC 2 A/N

Consolidated City (NS) CONCITNS 8 A/N

Place (FIPS) PLACE 5 A/N X X

FIPS Place Class Code PLACECC 2 A/N X X

Place (NS) PLACENS 8 A/N X X

Census Tract TRACT 6 A/N

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 47 of

247
2-40 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

637 638 639 640 641 642 643

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N X

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N X

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N X

Subdivision (NS) AITSNS 8 A/N X

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N X

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N X

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N X

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X X

Indicator MEMI 1 A/N X X X

Combined Statistical Area CSA 3 A/N X X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X X

Area

NECTA Metropolitan/

NECTA 5 A/N

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N

and Town Area CNECTA 3 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 48 of

247
How to Use This Product 2-41

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

637 638 639 640 641 642 643

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X X

Indicator NECTAPCI 1 A/N X X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N X X

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N X X X X X

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N

School District (Secondary) SDSEC 5 A/N

School District (Unified) SDUNI 5 A/N

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 49 of

247
2-42 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

637 638 639 640 641 642 643

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 50 of

247
How to Use This Product 2-43

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

700 701 702 703 704 705 706

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X X X X X X X

FIPS County Class Code COUNTYCC 2 A/N X X X X X X X

County (NS) COUNTYNS 8 A/N X X X X X X X

County Subdivision (FIPS) COUSUB 5 A/N

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N

County Subdivision (NS) COUSUBNS 8 A/N

Subminor Civil Division (FIPS) SUBMCD 5 A/N

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N

Subminor Civil Division (NS) SUBMCDNS 8 A/N

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N X

FIPS Consolidated City Class 

Code CONCITCC 2 A/N X

Consolidated City (NS) CONCITNS 8 A/N X

Place (FIPS) PLACE 5 A/N X

FIPS Place Class Code PLACECC 2 A/N X

Place (NS) PLACENS 8 A/N X

Census Tract TRACT 6 A/N

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 51 of

247
2-44 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

700 701 702 703 704 705 706

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N X

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N X

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N X

Subdivision (NS) AITSNS 8 A/N X

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N X

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N X

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N X

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X X X X X X

Indicator MEMI 1 A/N X X X X X X X

Combined Statistical Area CSA 3 A/N X X X X X X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X X X X X X

Area

NECTA Metropolitan/

NECTA 5 A/N

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N

and Town Area CNECTA 3 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 52 of

247
How to Use This Product 2-45

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

700 701 702 703 704 705 706

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X

Indicator NECTAPCI 1 A/N X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N X X X X X X X

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N X X X X X X X

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N X

School District (Secondary) SDSEC 5 A/N

School District (Unified) SDUNI 5 A/N

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 53 of

247
2-46 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

700 701 702 703 704 705 706

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 54 of

247
How to Use This Product 2-47

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

707 708 709 710 715 720 730

Record Codes

File Identification FILEID 6 A/N X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X

Region REGION 1 A/N X X X X X X X

Division DIVISION 1 A/N X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X

County (FIPS) COUNTY 3 A/N X X X X X X X

FIPS County Class Code COUNTYCC 2 A/N X X X X X X X

County (NS) COUNTYNS 8 A/N X X X X X X X

County Subdivision (FIPS) COUSUB 5 A/N X X X X

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N X X X X

County Subdivision (NS) COUSUBNS 8 A/N X X X X

Subminor Civil Division (FIPS) SUBMCD 5 A/N X

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N X

Subminor Civil Division (NS) SUBMCDNS 8 A/N X

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N

FIPS Consolidated City Class 

Code CONCITCC 2 A/N

Consolidated City (NS) CONCITNS 8 A/N

Place (FIPS) PLACE 5 A/N X X

FIPS Place Class Code PLACECC 2 A/N X X

Place (NS) PLACENS 8 A/N X X

Census Tract TRACT 6 A/N X X

Block Group BLKGRP 1 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 55 of

247
2-48 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

707 708 709 710 715 720 730

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N

Subdivision (NS) AITSNS 8 A/N

Tribal Census Tract TTRACT 6 A/N

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X X X X X X

Indicator MEMI 1 A/N X X X X X X X

Combined Statistical Area CSA 3 A/N X X X X X X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X X X X X X

Area

NECTA Metropolitan/

NECTA 5 A/N X X X

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N X X X

and Town Area CNECTA 3 A/N X X X

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 56 of

247
How to Use This Product 2-49

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

707 708 709 710 715 720 730

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N X X X

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X X

Indicator NECTAPCI 1 A/N X X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N X X X X X X X

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N X X X X X X X

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N

School District (Secondary) SDSEC 5 A/N X

School District (Unified) SDUNI 5 A/N X

Public Use Microdata Area PUMA 5 A/N

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 57 of

247
2-50 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

707 708 709 710 715 720 730

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X

Part Flag PARTFLAG 1 A/N X X X X X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

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How to Use This Product 2-51

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FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

735 740 745 750 755 950 960 970

Record Codes

File Identification FILEID 6 A/N X X X X X X X X

State/US-Abbreviation (USPS) STUSAB 2 A X X X X X X X X

Summary Level SUMLEV 3 A/N X X X X X X X X

Geographic Variant GEOVAR 2 A/N X X X X X X X X

Geographic Component GEOCOMP 2 A/N X X X X X X X X

Characteristic Iteration CHARITER 3 A/N X X X X X X X X

Characteristic Iteration File 

Sequence Number CIFSN 2 A/N X X X X X X X X

Logical Record Number LOGRECNO 7 N X X X X X X X X

Geographic Area Codes

Geographic Record Identifier GEOID 60 A/N X X X X X X X X

Geographic Code Identifier GEOCODE 51 A/N X X X X X X X X

Region REGION 1 A/N X X X X X X X X

Division DIVISION 1 A/N X X X X X X X X

State (FIPS) STATE 2 A/N X X X X X X X X

State (NS) STATENS 8 A/N X X X X X X X X

County (FIPS) COUNTY 3 A/N X X X X X

FIPS County Class Code COUNTYCC 2 A/N X X X X X

County (NS) COUNTYNS 8 A/N X X X X X

County Subdivision (FIPS) COUSUB 5 A/N X X X X X

FIPS County Subdivision Class 

Code COUSUBCC 2 A/N X X X X X

County Subdivision (NS) COUSUBNS 8 A/N X X X X X

Subminor Civil Division (FIPS) SUBMCD 5 A/N X X X

FIPS Subminor Civil Division 

Class Code SUBMCDCC 2 A/N X X X

Subminor Civil Division (NS) SUBMCDNS 8 A/N X X X

Estate (FIPS) ESTATE 5 A/N

FIPS Estate Class Code ESTATECC 2 A/N

Estate (NS) ESTATENS 8 A/N

Consolidated City (FIPS) CONCIT 5 A/N X

FIPS Consolidated City Class 

Code CONCITCC 2 A/N X

Consolidated City (NS) CONCITNS 8 A/N X

Place (FIPS) PLACE 5 A/N X X X

FIPS Place Class Code PLACECC 2 A/N X X X

Place (NS) PLACENS 8 A/N X X X

Census Tract TRACT 6 A/N X X X X X

Block Group BLKGRP 1 A/N X X X X

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FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

735 740 745 750 755 950 960 970

Block

American Indian Area/Alaska 

Native Area/Hawaiian 

BLOCK 4 A/N X X

Home Land (Census)

American Indian Trust Land/

Hawaiian Home Land 

AIANHH 4 A/N X

Indicator

American Indian Area/Alaska 

Native Area/Hawaiian 

AIHHTLI 1 A/N X

Home Land (FIPS)

FIPS American Indian Area/

Alaska Native Area/

Hawaiian Home Land Class 

AIANHHFP 5 A/N X

Code

American Indian Area/Alaska 

Native Area/Hawaiian 

AIANHHCC 2 A/N X

Home Land (NS)

American Indian Tribal 

AIANHHNS 8 A/N X

Subdivision (Census)

American Indian Tribal 

AITS 3 A/N X

Subdivision (FIPS)

FIPS American Indian Tribal 

AITSFP 5 A/N X

Subdivision Class Code

American Indian Tribal 

AITSCC 2 A/N X

Subdivision (NS) AITSNS 8 A/N X

Tribal Census Tract TTRACT 6 A/N X

Tribal Block Group

Alaska Native Regional 

TBLKGRP 1 A/N X

Corporation (FIPS)

FIPS Alaska Native Regional 

ANRC 5 A/N X

Corporation Class Code

Alaska Native Regional 

ANRCCC 2 A/N X

Corporation (NS)

Metropolitan Statistical Area/

Micropolitan Statistical 

ANRCNS 8 A/N X

Area

Metropolitan/Micropolitan 

CBSA 5 A/N X X X X X

Indicator MEMI 1 A/N X X X X X

Combined Statistical Area CSA 3 A/N X X X X X

Metropolitan Division

New England City and Town 

METDIV 5 A/N X X X X X

Area

NECTA Metropolitan/

NECTA 5 A/N X X

Micropolitan Indicator

Combined New England City 

NMEMI 1 A/N X X

and Town Area CNECTA 3 A/N X X

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How to Use This Product 2-53

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

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FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

735 740 745 750 755 950 960 970

New England City and Town 

Area Division

Metropolitan Statistical Area/

Micropolitan Statistical 

Area Principal City 

NECTADIV 5 A/N X X

Indicator

New England City and 

Town Area Principal City 

CBSAPCI 1 A/N X X X

Indicator NECTAPCI 1 A/N X X

Urban Area UA 5 A/N

Urban Area Type UATYPE 1 A/N

Urban/Rural UR 1 A/N

Congressional District (116th) CD116 2 A/N X X

Congressional District (118th) CD118 2 A/N

Congressional District (119th) CD119 2 A/N

Congressional District (120th) CD120 2 A/N

Congressional District (121st)

State Legislative District 

CD121 2 A/N

(Upper Chamber) (2018)

State Legislative District 

SLDU18 3 A/N X X

(Upper Chamber) (2022)

State Legislative District 

SLDU22 3 A/N

(Upper Chamber) (2024)

State Legislative District 

SLDU24 3 A/N

(Upper Chamber) (2026)

State Legislative District 

SLDU26 3 A/N

(Upper Chamber) (2028)

State Legislative District 

SLDU28 3 A/N

(Lower Chamber) (2018)

State Legislative District 

SLDL18 3 A/N X X

(Lower Chamber) (2022)

State Legislative District 

SLDL22 3 A/N

(Lower Chamber) (2024)

State Legislative District 

SLDL24 3 A/N

(Lower Chamber) (2026)

State Legislative District 

SLDL26 3 A/N

(Lower Chamber) (2028) SLDL28 3 A/N

Voting District VTD 6 A/N X X X X X

Voting District Indicator

ZIP Code Tabulation Area 

VTDI 1 A/N X X X X X

(5-Digit) ZCTA 5 A/N

School District (Elementary) SDELM 5 A/N X X X

School District (Secondary) SDSEC 5 A/N X X X

School District (Unified) SDUNI 5 A/N X X X

Public Use Microdata Area PUMA 5 A/N

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2-54 How to Use This Product

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 2-4. GEOGRAPHIC HEADER RECORD—Con.

Field

Data 

dictionary 

reference

Maximum 

field size Data type

Summary levels

735 740 745 750 755 950 960 970

Area Characteristics

Area (Land) AREALAND 14 N X X X X X X X X

Area (Water) AREAWATR 14 N X X X X X X X X

Area Base Name BASENAME 100 A/N X X X X X X X X

Area Name-Legal/Statistical 

Area Description (LSAD) 

Term-Part Indicator NAME 125 A/N X X X X X X X X

Functional Status Code FUNCSTAT 1 A/N X X X X X X X X

Geographic Change User Note 

Indicator GCUNI 1 A/N

Population Count (100%) POP100 9 N X X X X X X X X

Housing Unit Count (100%) HU100 9 N X X X X X X X X

Internal Point (Latitude) INTPTLAT 11 A/N X X X X X X X X

Internal Point (Longitude) INTPTLON 12 A/N X X X X X X X X

Legal/Statistical Area 

Description Code LSADC 2 A/N X X X X X X X X

Part Flag PARTFLAG 1 A/N X X X

Special Area Codes

Urban Growth Area UGA 5 A/N

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Subject Locator 3-1

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Chapter 3.

Subject Locator

CONTENTS

General Information ............................................................ 3-1

Subject Locator ................................................................ 3-1

GENERAL INFORMATION

The subject locator is an index designed to quickly identify the tables (matrices) in the 

2020 Census State Redistricting Data (Public Law 94-171) Summary File. This index is 

arranged in alphabetical order by the name of a subject. Under each subject heading, the 

universe or the type of entry being tabulated (shown in italics) and the relevant table number appear.

SUBJECT LOCATOR

Subjects Table Number

Group Quarters Population by Major Group Quarters Type

 Population in group quarters ................................................ P5

Hispanic or Latino, and Not Hispanic or Latino by Race

 Total population ............................................................ P2

Hispanic or Latino, and Not Hispanic or Latino by Race for the Population 

18 Years and Over

 Total population, 18 years and over ........................................... P4

Occupancy Status

 Housing units .............................................................. H1

Race

 Total population ............................................................ P1

Race for the Population 18 Years and Over

 Total population, 18 years and over ........................................... P3

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Summary Level Hierarchy Chart and Sequence List 4-1

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Chapter 4.

Summary Level Hierarchy Chart and Sequence List

Summary levels specify the content and hierarchical relationships of the geographic elements 

that are required to tabulate and summarize data. In the Summary Level Hierarchy Chart that 

follows, the summary level code precedes the summary level area, and symbols are used with 

special meaning for summary levels:

Hyphen “-” separates the elements of a hierarchy.

Slash “/” denotes equivalent elements that have different names.

Parentheses “( )” are not used in the specification for summary levels, but are used occasionally in the usual and customary manner in statements of clarification.

FIGURE 4-1. SUMMARY LEVEL HIERARCHY CHART

The Summary Level Hierarchy Chart displays the hierarchical relationships among the summary levels in 

this summary file. The superior/subordinate relationships are depicted by indenting the lines.

Summary Level

040 State1

500 State-Congressional District2

510 State-Congressional District-County3

511 State-Congressional District-County-Census Tract

521 State-Congressional District-County-County Subdivision

531 State-Congressional District-Place/Remainder

541 State-Congressional District-Consolidated City

550 State-Congressional District-American Indian Area/Alaska Native Area/Hawaiian Home 

Land

553 State-Congressional District-American Indian Area-Tribal Subdivision/

Remainder4

570 State-Congressional District-School District (Elementary)/Remainder

571 State-Congressional District-School District (Secondary)/Remainder

572 State-Congressional District-School District (Unified)/Remainder

610 State-State Legislative District (Upper Chamber)

612 State-State Legislative District (Upper Chamber)-County

613 State-State Legislative District (Upper Chamber)-County-County Subdivision

632 State-State Legislative District (Upper Chamber)-County-County 

Subdivision-Subminor Civil Division5

630 State-State Legislative District (Upper Chamber)-County-Voting District/

Remainder

631 State-State Legislative District (Upper Chamber)-County-Census Tract

614 State-State Legislative District (Upper Chamber)-Place/Remainder

615 State-State Legislative District (Upper Chamber)-Consolidated City

See notes at end of table.

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4-2 Summary Level Hierarchy Chart and Sequence List

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Summary Level

616 State-State Legislative District (Upper Chamber)-American Indian Area/Alaska Native 

Area/Hawaiian Home Land

633 State-State Legislative District (Upper Chamber)-American Indian Area-Tribal 

Subdivision/Remainder

634 State-State Legislative District (Upper Chamber)-Alaska Native Regional Corporation

617 State-State Legislative District (Upper Chamber)-School District (Elementary)/

Remainder

618 State-State Legislative District (Upper Chamber)-School District (Secondary)/

Remainder

619 State-State Legislative District (Upper Chamber)-School District (Unified)/Remainder

620 State-State Legislative District (Lower Chamber)

622 State-State Legislative District (Lower Chamber)-County

623 State-State Legislative District (Lower Chamber)-County-County Subdivision 

637 State-State Legislative District (Lower Chamber)-County-County 

Subdivision-Subminor Civil Division

635 State-State Legislative District (Lower Chamber)-County-Voting District/

Remainder

636 State-State Legislative District (Lower Chamber)-County-Census Tract

624 State-State Legislative District (Lower Chamber)-Place/Remainder

625 State-State Legislative District (Lower Chamber)-Consolidated City

626 State-State Legislative District (Lower Chamber)-American Indian Area/Alaska Native 

Area/Hawaiian Home Land

638 State-State Legislative District (Lower Chamber)-American Indian Area-Tribal 

Subdivision/Remainder

639 State-State Legislative District (Lower Chamber)-Alaska Native Regional Corporation

627 State-State Legislative District (Lower Chamber)-School District (Elementary)/

Remainder

628 State-State Legislative District (Lower Chamber)-School District (Secondary)/

Remainder

629 State-State Legislative District (Lower Chamber)-School District (Unified)/Remainder

050 County

060 State-County-County Subdivision

067 State-County-County Subdivision-Subminor Civil Division

512 State-County-Congressional District

640 State-County-State Legislative District (Upper Chamber)

641 State-County-State Legislative District (Lower Chamber)

140 State-County-Census Tract

150 State-County-Census Tract-Block Group

700 State-County-Voting District/Remainder

701 State-County-Voting District/Remainder-Place/Remainder

702 State-County-Voting District/Remainder-Consolidated City

See notes at end of table.

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Summary Level Hierarchy Chart and Sequence List 4-3

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Summary Level

703 State-County-Voting District/Remainder-American Indian Area/Alaska Native 

Area/Hawaiian Home Land

704 State-County-Voting District/Remainder-American Indian Area-Tribal 

Subdivision/Remainder

705 State-County-Voting District/Remainder-Alaska Native Regional Corporation

706 State-County-Voting District/Remainder-School District (Elementary)/

Remainder 

707 State-County-Voting District/Remainder-School District (Secondary)/

Remainder

708 State-County-Voting District/Remainder-School District (Unified)/Remainder

709 State-County-Voting District/Remainder-Census Tract

710 State-County-Voting District/Remainder-County Subdivision

720 State-County-Voting District/Remainder-County Subdivision-Place/

Remainder

730 State-County-Voting District/Remainder-County Subdivision-Place/

Remainder-Census Tract

740 State-County-Voting District/Remainder-County SubdivisionPlace/Remainder-Census Tract-Block Group

750 State-County-Voting District/Remainder-County 

Subdivision-Place/Remainder-Census Tract-Block 

Group-Block

715 State-County-Voting District/Remainder-County Subdivision-Subminor 

Civil Division

735 State-County-Voting District/Remainder-County SubdivisionSubminor Civil Division-Census Tract

745 State-County-Voting District/Remainder-County SubdivisionSubminor Civil Division-Census Tract-Block Group

755 State-County-Voting District/Remainder-County 

Subdivision-Subminor Civil Division-Census Tract-Block 

Group-Block

160 State-Place

155 State-Place-County

532 State-Place-Congressional District

642 State-Place-State Legislative District (Upper Chamber)

643 State-Place-State Legislative District (Lower Chamber)

170 State-Consolidated City

172 State-Consolidated City-Place within Consolidated City

280 State-American Indian Area/Alaska Native Area/Hawaiian Home Land

281 State-American Indian Area-Tribal Subdivision/Remainder

282 State-American Indian Area/Alaska Native Area/Hawaiian Home Land-County

283 State-American Indian Area/Alaska Native Area (Reservation or Statistical Entity 

Only)6

See notes at end of table.

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4-4 Summary Level Hierarchy Chart and Sequence List

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Summary Level

230

950

960

970

286 State-American Indian Area (Off-Reservation Trust Land Only)/Hawaiian Home Land

288 State-American Indian Area (Off-Reservation Trust Land Only)/Hawaiian Home 

Land-County

State-Alaska Native Regional Corporation

State-School District (Elementary)/Remainder

State-School District (Secondary)/Remainder

State-School District (Unified)/Remainder

1

 State, District of Columbia, or Puerto Rico.

2 116th Congress.

3 Parish in Louisiana; borough, census area, city and borough, or municipality in Alaska; and municipio in Puerto Rico. In Maryland, 

Missouri, Nevada, and Virginia, one or more cities are independent of counties and are treated as statistical equivalents of counties. 

The entire District of Columbia, which has no counties, is treated as a county equivalent. 4 Tribal Subdivisions exist only within some federally recognized American Indian reservations and/or off-reservation trust lands and 

Oklahoma tribal statistical areas (OTSAs). In addition, tribal subdivisions are only included in products when tribal officials provided 

boundaries and geographic attributes to the Census Bureau. 5 Subbarrio in Puerto Rico only.

6 American Indian Area/Alaska Native Area (Reservation or Statistical Entity Only) includes American Indian Reservations; 

Oklahoma Tribal Statistical Areas (OTSAs); Tribal Designated Statistical Areas (TDSAs) (federal areas); State Designated Tribal 

Statistical Areas (SDTSAs) (state areas); and Alaska Native Village Statistical Areas (ANVSAs).

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Summary Level Hierarchy Chart and Sequence List 4-5

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

FIGURE 4-2. SUMMARY LEVEL SEQUENCE LIST

The Summary Level Sequence List shows the summary levels in this summary file, sorted by summary 

level code. The 2020 Census Summary Files are sorted by summary level code, and within summary level 

code, by geographic component code. The 2020 Census State Redistricting Data (Public Law 94-171) 

Summary File has no geographic components.

Geographic 

component

Summary level

Code                   Area

00 040 State1

00 050 State-County2

00 060 State-County-County Subdivision

00 067 State-County-County Subdivision-Subminor Civil Division3

00 140 State-County-Census Tract

00 150 State-County-Census Tract-Block Group

00 155 State-Place-County

00 160 State-Place

00 170 State-Consolidated City

00 172 State-Consolidated City-Place within Consolidated City

00 230 State-Alaska Native Regional Corporation

00 280 State-American Indian Area/Alaska Native Area/Hawaiian Home Land

00 281 State-American Indian Area-Tribal Subdivision/Remainder4

00 282 State-American Indian Area/Alaska Native Area/Hawaiian Home Land-County

00 283 State-American Indian Area/Alaska Native Area (Reservation or Statistical Entity 

Only)5

00 285 State-American Indian Area/Alaska Native Area (Reservation or Statistical Entity 

Only)-County

00 286 State-American Indian Area (Off-Reservation Trust Land Only)/Hawaiian Home 

Land

00 288 State-American Indian Area (Off-Reservation Trust Land Only)/Hawaiian Home 

Land-County

00 500 State-Congressional District6

00 510 State-Congressional District-County

00 511 State-Congressional District-County-Census Tract

00 512 State-County-Congressional District

00 521 State-Congressional District-County-County Subdivision

00 531 State-Congressional District-Place/Remainder

00 532 State-Place-Congressional District

00 541 State-Congressional District-Consolidated City

00 550 State-Congressional District-American Indian Area/Alaska Native Area/Hawaiian 

Home Land

00 553 State-Congressional District-American Indian Area-Tribal Subdivision/Remainder

00 570 State-Congressional District-School District (Elementary)/Remainder

00 571 State-Congressional District-School District (Secondary)/Remainder

00 572 State-Congressional District-School District (Unified)/Remainder

00 610 State-State Legislative District (Upper Chamber)

00

See notes at e

612

nd of table.

State-State Legislative District (Upper Chamber)-County

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4-6 Summary Level Hierarchy Chart and Sequence List

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Geographic 

component

Summary level

Code                   Area

00 613 State-State Legislative District (Upper Chamber)-County-County Subdivision

00 614 State-State Legislative District (Upper Chamber)-Place/Remainder

00 615 State-State Legislative District (Upper Chamber)-Consolidated City

00 616 State-State Legislative District (Upper Chamber)-American Indian Area/Alaska 

Native Area/Hawaiian Home Land

00 617 State-State Legislative District (Upper Chamber)-School District (Elementary)/

Remainder

00 618 State-State Legislative District (Upper Chamber)-School District (Secondary)/

Remainder

00 619 State-State Legislative District (Upper Chamber)-School District (Unified)/

Remainder

00 620 State-State Legislative District (Lower Chamber)

00 622 State-State Legislative District (Lower Chamber)-County

00 623 State-State Legislative District (Lower Chamber)-County-County Subdivision

00 624 State-State Legislative District (Lower Chamber)-Place/Remainder

00 625 State-State Legislative District (Lower Chamber)-Consolidated City

00 626 State-State Legislative District (Lower Chamber)-American Indian Area/Alaska 

Native Area/Hawaiian Home Land

00 627 State-State Legislative District (Lower Chamber)-School District (Elementary)/

Remainder

00 628 State-State Legislative District (Lower Chamber)-School District (Secondary)/

Remainder

00 629 State-State Legislative District (Lower Chamber)-School District (Unified)/

Remainder

00 630 State-State Legislative District (Upper Chamber)-County-Voting District/

Remainder

00 631 State-State Legislative District (Upper Chamber)-County-Census Tract

00 632 State-State Legislative District (Upper Chamber)-County-County SubdivisionSubminor Civil Division

00 633 State-State Legislative District (Upper Chamber)-American Indian Area-Tribal 

Subdivision/Remainder

00 634 State-State Legislative District (Upper Chamber)-Alaska Native Regional 

Corporation

00 635 State-State Legislative District (Lower Chamber)-County-Voting District/

Remainder

00 636 State-State Legislative District (Lower Chamber)-County-Census Tract

00 637 State-State Legislative District (Lower Chamber)-County-County SubdivisionSubminor Civil Division

00 638 State-State Legislative District (Lower Chamber)-American Indian Area-Tribal 

Subdivision/Remainder

00 639 State-State Legislative District (Lower Chamber)-Alaska Native Regional 

Corporation

00 640 State-County-State Legislative District (Upper Chamber)

00 641 State-County-State Legislative District (Lower Chamber)

00

See notes at e

642

nd of table.

State-Place-State Legislative District (Upper Chamber)

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Summary Level Hierarchy Chart and Sequence List 4-7

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Geographic 

component

Summary level

Code                   Area

00 643 State-Place-State Legislative District (Lower Chamber)

00 700 State-County-Voting District/Remainder

00 701 State-County-Voting District/Remainder-Place/Remainder

00 702 State-County-Voting District/Remainder-Consolidated City

00 703 State-County-Voting District/Remainder-American Indian Area/Alaska Native 

Area/Hawaiian Home Land

00 704 State-County-Voting District/Remainder-American Indian Area-Tribal Subdivision/

Remainder

00 705 State-County-Voting District/Remainder-Alaska Native Regional Corporation

00 706 State-County-Voting District/Remainder-School District (Elementary)/Remainder

00 707 State-County-Voting District/Remainder-School District (Secondary)/Remainder

00 708 State-County-Voting District/Remainder-School District (Unified)/Remainder

00 709 State-County-Voting District/Remainder-Census Tract

00 710 State-County-Voting District/Remainder-County Subdivision

00 715 State-County-Voting District/Remainder-County Subdivision-Subminor Civil 

Division

00 720 State-County-Voting District/Remainder-County Subdivision-Place/Remainder

00 730 State-County-Voting District/Remainder-County Subdivision-Place/RemainderCensus Tract

00 735 State-County-Voting District/Remainder-County Subdivision-Subminor Civil 

Division-Census Tract

00 740 State-County-Voting District/Remainder-County Subdivision-Place/RemainderCensus Tract-Block Group

00 745 State-County-Voting District/Remainder-County Subdivision-Subminor Civil 

Division-Census Tract-Block Group

00 750 State-County-Voting District/Remainder-County Subdivision-Place/RemainderCensus Tract-Block Group-Block

00 755 State-County-Voting District/Remainder-County Subdivision-Subminor Civil 

Division-Census Tract-Block Group-Block

00 950 State-School District (Elementary)/Remainder

00 960 State-School District (Secondary)/Remainder

00 970 State-School District (Unified)/Remainder

1 State, District of Columbia, or Puerto Rico.

2 Parish in Louisiana; borough, census area, city and borough, or municipality in Alaska; and municipio in Puerto Rico. In Maryland, 

Missouri, Nevada, and Virginia, one or more cities are independent of counties and are treated as statistical equivalents of counties. 

The entire District of Columbia, which has no counties, is treated as a county equivalent. 3 Subbarrio in Puerto Rico only.

4 Tribal Subdivisions exist only within some federally recognized American Indian reservations and/or off-reservation trust lands 

and Oklahoma tribal statistical areas (OTSAs). In addition, tribal subdivisions are only included in products when tribal officials provided boundaries and geographic attributes to the Census Bureau. 5 American Indian Area/Alaska Native Area (Reservation or Statistical Entity Only) includes American Indian Reservations; 

Oklahoma Tribal Statistical Areas (OTSAs); Tribal Designated Statistical Areas (TDSAs) (federal areas); State Designated Tribal 

Statistical Areas (SDTSAs) (state areas); and Alaska Native Village Statistical Areas (ANVSAs). 6 116th Congress.

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List of Tables (Matrices) 5-1

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Chapter 5.

List of Tables (Matrices)

Table Title Total number 

number of data cells

P1 Race

Universe: Total population ............................................... 71

P2 Hispanic or Latino, and Not Hispanic or Latino by Race

Universe: Total population ............................................... 73

P3 Race for the Population 18 Years and Over

Universe: Total population 18 years and over .............................. 71

P4 Hispanic or Latino, and Not Hispanic or Latino by Race 

 for the Population 18 Years and Over 

Universe: Total population 18 years and over .............................. 73

P5 Group Quarters Population by Major Group Quarters Type

Universe: Population in group quarters .................................... 10

H1 Occupancy Status

Universe: Housing units ................................................. 3

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Data Dictionary 6-1

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Chapter 6.

Data Dictionary

CONTENTS

Identification Section ........................................................... 6-1

Record Codes .............................................................. 6-1

Geographic Area Codes ..................................................... 6-3

Area Characteristics ........................................................ 6-12

Special Area Codes ......................................................... 6-19

Endnotes .................................................................. 6-19

Table (Matrix) Section .......................................................... 6-25

IDENTIFICATION SECTION

The possible values in the Data type column are the following.

A Alphabetic: letters of the alphabet only.

N Numeric: numbers only.

A/N Alphanumeric: letters of the alphabet or numbers or (in selected fields) punctuation 

characters.

Note: The filling of codes and data attributes in the files is specific to summary level; not all 

fields are filled for every summary level. Where a code or attribute is specified, the actual 

value is assigned to the field except for the use of three special codes:

• Assignment of codes of nine (9) indicates a balance record or that the entity or attribute 

does not exist for this record.

• Assignment of pound signs (#) indicates that more than one value exists for this field and, 

thus, no specific value can be assigned.

• Assignment of exclamation marks (!) indicates that the data are not yet available for this 

product.

Data 

Field name dictionary 

reference Maximum 

name field size Data type

Record Codes

File Identification1 FILEID 6 A/N

 PLST 2020 Census State Redistricting Data (Public Law 94-171) Summary File

See endnotes at the end of the table.

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6-2 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Record Codes—Con.

State/U.S. Abbreviation (USPS)

AK Alaska IL Illinois

AL Alabama IN Indiana

AR Arkansas KS Kansas

AZ Arizona KY Kentucky

CA California LA Louisiana

CO Colorado MA Massachusetts

CT Connecticut MD Maryland

DC District of Columbia ME Maine

DE Delaware MI Michigan

FL Florida MN Minnesota

GA Georgia MO Missouri

HI Hawaii MS Mississippi

IA Iowa MT Montana

ID Idaho

Summary Level2

Geographic Variant3

Geographic Component4

 00 Not a geographic component

Characteristic Iteration5

 000 Not a characteristic iteration

Characteristic Iteration File Sequence Number6

Logical Record Number7

See endnotes at the end of the table.

NC

ND

NE

NH

NJ

NM

NV

NY

OH

OK

OR

PA

PR

STUSAB

North Carolina RI

North Dakota SC

Nebraska SD

New Hampshire TN

New Jersey TX

New Mexico US

Nevada UT

New York VA

Ohio VT

Oklahoma WA

Oregon WI

Pennsylvania WV

Puerto Rico WY

SUMLEV

GEOVAR

GEOCOMP

CHARITER

CIFSN

LOGRECNO

2 A

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

United States

Utah

Virginia

Vermont

Washington

Wisconsin

West Virginia

Wyoming

3 A/N

2 A/N

2 A/N

3 A/N

2 A/N

7 N

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Data Dictionary 6-3

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes

Geographic Record Identifier8

Geographic Code Identifier9

Region10

 1 Northeast

 2 Midwest

 3 South

 4 West

 9 Not in a region (Puerto Rico)

Division10

 0 Not in a division (Puerto Rico)

 1 New England

 2 Middle Atlantic

 3 East North Central

 4 West North Central

 5 South Atlantic

 6 East South Central

 7 West South Central

 8 Mountain

 9 Pacific

State (FIPS)10, 11

01 Alabama 17 Illinois

02 Alaska 18 Indiana

04 Arizona 19 Iowa

05 Arkansas 20 Kansas

06 California 21 Kentucky

08 Colorado 22 Louisiana

09 Connecticut 23 Maine

10 Delaware 24 Maryland

11 District of Columbia 25 Massachusetts

12 Florida 26 Michigan

13 Georgia 27 Minnesota

15 Hawaii 28 Mississippi

16 Idaho 29 Missouri

See endnotes at the end of the table.

30

31

32

33

34

35

36

37

38

39

40

41

42

GEOID

GEOCODE

REGION

DIVISION

STATE

Montana 44

Nebraska 45

Nevada 46

New Hampshire 47

New Jersey 48

New Mexico 49

New York 50

North Carolina 51

North Dakota 53

Ohio 54

Oklahoma 55

Oregon 56

Pennsylvania 72

60 A/N

51 A/N

1 A/N

1 A/N

2 A/N

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

Puerto Rico

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6-4 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes—Con.

State (NS)11 STATENS 8 A/N

County (FIPS)10, 11 COUNTY 3 A/N

001-507 County or equivalent area code

510-840 Independent city code

FIPS County Class Code10, 11 COUNTYCC 2 A/N

C7 An incorporated place that is independent of any county

H1 An active county or equivalent area

H4 An inactive county or equivalent area

H5 A statistical county equivalent area

H6 A county or equivalent feature that has consolidated its government with an incorporated place

County (NS)11 COUNTYNS 8 A/N

County Subdivision (FIPS)10, 11 COUSUB 5 A/N

00000 Water area not assigned to a county subdivision

00001-89999 County subdivision in a state-level entity with governmental entities 

 and in Alaska and Puerto Rico

90000-98999 County subdivision in a state with administrative or statistical entities 

 (excluding Alaska and Puerto Rico)

FIPS County Subdivision Class Code10, 11 COUSUBCC 2 A/N

C2 An active incorporated place that is legally coextensive with a county subdivision but 

treated as independent of any county subdivision (an independent place)

C5 An active incorporated place that is independent of any county subdivision and 

serves as a county subdivision equivalent (an independent place)

C7 An incorporated place that is independent of any county (an independent city)

T1 An active county subdivision that is not coextensive with an incorporated place 

T2 An active county subdivision that is coextensive with a census designated place 

T5 An active county subdivision that is coextensive with an incorporated place

T9 An inactive county subdivision

Z1 A nonfunctioning county subdivision

Z2 A county subdivision that is coextensive with or wholly contained within a legal 

American Indian, Alaska Native, or Native Hawaiian area and is independent of any 

other county subdivision

Z3 A county subdivision defined as a statistical unorganized territory

Z5 A statistical census county division (CCD) or census subarea (Alaska only)

See endnotes at the end of the table.

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Data Dictionary 6-5

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes—Con.

Z7 An active incorporated place that is legally coextensive with or ind

county subdivision in a state with only nonfunctioning county sub

independent place)

Z9 Water area not assigned to a county subdivision

County Subdivision (NS)11 COUSUBNS

Subminor Civil Division (FIPS)10, 11, 12 SUBMCD

00001-89999 Subbarrio

FIPS Subminor Civil Division Class Code10, 11, 12 SUBMCDCC

Z6 Subbarrio

Subminor Civil Division (NS)11, 12 SUBMCDNS

Estate (FIPS)10, 11, 13 ESTATE

00001-89999 Estate 

FIPS Estate Class Code10, 11, 13 ESTATECC

Z1 A nonfunctioning county subdivision

Estate (NS)11, 13 ESTATENS

Consolidated City (FIPS)10, 11 CONCIT

03436 Athens-Clarke County, Georgia

04200 Augusta-Richmond County, Georgia

11390 Butte-Silver Bow, Montana

28410 Greeley County, Kansas

36000 Indianapolis, Indiana

47500 Milford, Connecticut

48003 Louisville/Jefferson County, Kentucky

52004 Nashville-Davidson, Tennessee

FIPS Consolidated City Class Code10, 11 CONCITCC

C3 Consolidated city

Consolidated City (NS)11 CONCITNS

See endnotes at the end of the table.

ependent o

divisions (an 

8

5

2

8

5

2

8

5

2

8

f any 

A/N

A/N

A/N

A/N

A/N

A/N

A/N

A/N

A/N

A/N

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6-6 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes—Con.

Place (FIPS)10, 11 PLACE 5 A/N

00001-89999 Incorporated place or census designated place (CDP)

FIPS Place Class Code10, 11 PLACECC 2 A/N

C1 An active incorporated place that does not serve as a county subdivision equivalent

C2 An active incorporated place that is legally coextensive with a county subdivision but 

treated as independent of any county subdivision (an independent place)

C5 An active incorporated place that is independent of any county subdivision and 

serves as a county subdivision equivalent (an independent place)

C6 An active incorporated place that is partially independent of any county subdivision 

and partially dependent within a legal county subdivision (exists in Iowa and Ohio 

only)

C7 An incorporated place that is independent of any county (an independent city)

C8 The balance of a consolidated city excluding the separately incorporated place(s) 

within that consolidated government.

C9 An inactive or nonfunctioning incorporated place

M2 A census designated place (CDP) defined within a military or Coast Guard installation

U1 A census designated place (CDP) with a name officially recognized by the U.S. Board 

on Geographic Names for a populated place

U2 A census designated place (CDP) with a name not officially recognized by the 

U.S. Board on Geographic Names for a populated place

Place (NS)11 PLACENS 8 A/N

Census Tract10 TRACT 6 A/N

000100-998999 Census tract

Block Group10 BLKGRP 1 A/N

0  Block group (water area only)

1–9 Block group (land or land and water area)

Block10 BLOCK 4 A/N

0001-0999 Block in a water-area-only block group

1000-9999 Block

See endnotes at the end of the table.

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Data Dictionary 6-7

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes—Con.

American Indian Area/Alaska Native Area/Hawaiian 

 Home Land (Census)10 AIANHH 4 A/N

0001-4799 Legal federally recognized American Indian area code 

4800-4989 American Indian joint-use area

5000-5499 Hawaiian home land

5500-5899 Oklahoma tribal statistical area

5900-5999 Joint-use Oklahoma tribal statistical area

6000-7999 Alaska Native Village statistical area

8000-8999 Tribal designated statistical area

9000-9499 State recognized legal American Indian area

9500-9998 State designated tribal statistical area

American Indian Trust Land/Hawaiian Home Land 

 Indicator10 AIHHTLI 1 A/N

R American Indian reservation or statistical entity only

T American Indian off-reservation trust land only or Hawaiian home land

M American Indian reservation and off-reservation trust land

9 Not in an American Indian area or Hawaiian home land

American Indian Area/Alaska Native Area/Hawaiian 

 Home Land (FIPS)10, 11, 14 AIANHHFP 5 A/N

00001-89999 American Indian area, Alaska Native area, or Hawaiian home land

FIPS American Indian Area/Alaska Native Area/ 

 Hawaiian Home Land Class Code10, 11 AIANHHCC 2 A/N

D0 Statistical or legal area administered and/or claimed by two or more American Indian 

tribes

D1 Legal federally recognized American Indian area consisting of reservation and associated off-reservation trust land.

D2 Legal federally recognized American Indian area consisting of reservation only

D3 Legal federally recognized American Indian area consisting of off-reservation trust 

land only

D4 Legal state-recognized American Indian reservation

D5 The off-reservation trust land portion of an American Indian area with both a reservation and off-reservation trust land

D6 Statistical American Indian area defined for a federally recognized tribe that does not 

have a reservation or off-reservation trust land, specifically a tribal designated statistical area (TDSA) or Oklahoma tribal statistical area (OTSA)

See endnotes at the end of the table.

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6-8 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes—Con.

D9 Statistical American Indian area defined for a sta

have a reservation or off-reservation trust land, s

statistical area

E1 Alaska Native village statistical area

F1 Hawaiian home land

American Indian Tribal Subdivision (Census)10

001-998 American Indian tribal subdivision

American Indian Tribal Subdivision (FIPS)10, 11, 14

00001-89999 American Indian tribal subdivision

FIPS American Indian Tribal Subdivision Class Code10, 11

D7 American Indian tribal subdivision

American Indian Tribal Subdivision (NS)11

Tribal Census Tract10

T00100-T98999 Tribal census tract

Tribal Block Group10

A–H, J, K Tribal block group

Alaska Native Regional Corporation (FIPS)10, 11

00590 Ahtna

01570 Aleut

03950 Arctic Slope

06370 Bering Straits

09040 Bristol Bay

09800 Calista

14410 Chugach

17140 Cook Inlet

20010 Doyon

41640 Koniag

52120 NANA

67940 Sealaska

FIPS Alaska Native Regional Corporation Class Code10, 11

E7 Alaska Native Regional Corporation

See endnotes at the end of the table.

te-recognized tribe that does not 

pecifically a state

AITS

AITSFP

AITSCC

AITSNS

TTRACT

TBLKGRP

ANRC

ANRCCC

 designated tribal 

3

5

2

8

6

1

5

2

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

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Data Dictionary 6-9

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes—Con.

Alaska Native Regional Corporation (NS)11 ANRCNS 8

Metropolitan Statistical Area/Micropolitan Statistical 

 Area10, 11 CBSA 5

10000-49999 Metropolitan or Micropolitan Statistical Area (cannot end in ‘4’)

Metropolitan/Micropolitan Indicator MEMI 1

1 Metropolitan Statistical Area

2 Micropolitan Statistical Area

9 Not in a Metropolitan or Micropolitan Statistical Area

Combined Statistical Area10, 11 CSA 3

100-599 Combined Statistical Area

Metropolitan Division10, 11 METDIV 5

10004-49994 Metropolitan Division (always ends in ‘4’)

New England City and Town Area10, 11 NECTA 5

70000-79999 New England City and Town Area (cannot end in ‘4’)

NECTA Metropolitan/Micropolitan Indicator NMEMI 1

1 Metropolitan New England City and Town Area

2 Micropolitan New England City and Town Area

9 Not in a New England City and Town Area

Combined New England City and Town 

 Area10, 11 CNECTA 3

 700-799 Combined New England City and Town Area

New England City and Town Area Division10, 11 NECTADIV 5

 70004–79994 New England City and Town Area Division (always ends in ‘4’)

Metropolitan Statistical Area/Micropolitan Statistical 

 Area Principal City Indicator10 CBSAPCI 1

Y Place is a principal city of a metropolitan or micropolitan statistical area

N Place is not a principal city of a metropolitan or micropolitan statistical area

9 Not in a place

See endnotes at the end of the table.

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

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6-10 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes—Con.

New England City and Town Area Principal City 

 Indicator10 NECTAPCI

Y Place is a principal city of a New England city and town area

N Place is not a principal city of a New England city and town area

9 Not in a place

Urban Area10, 15 UA

 00001-98999 Urbanized area or urban cluster

Urban Area Type15 UATYPE

U Urbanized area

C Urban cluster

9 Not in an urban area

Urban/Rural10, 15 UR

U Area is classified as urban

R Area is classified as rural

M Mixed; part is classified as urban and part is classified as rural

Congressional District (All)10, 11

01-53 The Congressional District number

00 Applies to states whose representative is elected “at large.” The st

  Representative in the United States House of Representatives.

98 Applies to areas that have an “at large” nonvoting delegate or resi

  sioner in the United State House of Representatives.

ZZ Area not assigned to a congressional district

Congressional District (116th)10, 11, 16 CD116

Congressional District (118th)10, 11, 17 CD118

Congressional District (119th)10, 11, 17 CD119

Congressional District (120th)10, 11, 17 CD120

Congressional District (121st)10, 11, 17 CD121

State Legislative District (Upper 

 Chamber) (2018)10, 18 SLDU18

State Legislative District (Upper 

 Chamber) (2022)10, 18, 19 SLDU22

State Legislative District (Upper 

 Chamber) (2024)10, 18, 19 SLDU24

See endnotes at the end of the table.

1

5

1

1

ate has o

dent commis

2

2

2

2

2

3

3

3

 A/N

 A/N

 A/N

 A/N

nly one 

 - 

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

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Data Dictionary 6-11

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

   

   

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Geographic Area Codes—Con.

State Legislative District (Upper 

 Chamber) (2026)10, 18, 19 SLDU26

State Legislative District (Upper 

 Chamber) (2028)10, 18, 19 SLDU28

State Legislative District (Lower 

 Chamber) (2018)10, 18 SLDL18

State Legislative District (Lower 

 Chamber) (2022)10, 18, 19 SLDL22

State Legislative District (Lower 

 Chamber) (2024)10, 18, 19 SLDL24

State Legislative District (Lower 

 Chamber) (2026)10, 18, 19 SLDL26

State Legislative District (Lower 

 Chamber) (2028)10, 18, 19 SLDL28

Voting District10, 20 VTD

Voting District Indicator10 VTDI

A  Actual

P  Pseudo (adjusted)

Blank Voting districts not defined

ZIP Code Tabulation Area (5-Digit)10, 15 ZCTA

School District (Elementary)10 SDELM

 00001-99996 School district

School District (Secondary)10 SDSEC

 00001-99996  School district

School District (Unified)10 SDUNI

00001-99996 School district

99997   School district not defined (land area)

99998   School district not defined (water area only)

Public Use Microdata Area10, 15 PUMA

00001-99998 Census PUMA Code

See endnotes at the end of the table.

3

3

3

3

3

3

3

6

1

5

5

5

5

5

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

 A/N

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6-12 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Area Characteristics

Area (Land)10, 21 AREALAND 14 N

Area (Water)10, 22 AREAWATR 14 N

Area Base Name 10, 23 BASENAME 100 A/N

Area Name-Legal/Statistical Area Description (LSAD) 

 Term-Part Indicator10, 23 NAME 125 A/N

Functional Status Code10 FUNCSTAT 1 A/N

A Active governmental unit providing primary general-purpose functions

B Active governmental unit that is partially consolidated with another government but 

with separate officials, providing primary general-purpose functions

C Active governmental unit consolidated with another government with a single set of 

officials, providing general-purpose functions

E Active governmental unit providing special-purpose functions

F Fictitious entity created to fill the Census Bureau’s geographic hierarchy

G Active governmental unit that is subordinate to another unit of government; not 

classified as a government by the Census Bureau’s Governments Division

I  Inactive governmental unit that has the ability to activate and provide primary 

special-purpose functions

N Nonfunctioning legal entity (not a governmental unit)

S Statistical entity

Geographic Change User Note Indicator GCUNI 1 A/N

Y Geographic change user note exists for this entity

N No geographic change user note exists for this entity

Population Count (100%)24 POP100 9 N

Housing Unit Count (100%)25 HU100 9 N

Internal Point (Latitude)10, 26 INTPTLAT 11 A/N

Internal Point (Longitude)10, 27 INTPTLON 12 A/N

Legal/Statistical Area Description Code10 LSADC 2 A/N

00 None—no legal/statistical area description exists; no text is appended to the name of 

the entity 

03 City and borough—legal county equivalent in Alaska (Juneau, Sitka, Wrangell, and 

Yakutat); “City and Borough” is appended to the name of the entity

04 Borough—county equivalent in Alaska; “Borough” is appended to the name of the 

entity

05 Census area—statistical county equivalent in Alaska; “Census Area” is appended to 

the name of the entity

06 County—legal division of 48 states; “County” is appended to the name of the entity

See endnotes at the end of the table.

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Data Dictionary 6-13

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Area Characteristics—Con.

07 District—1) legal tribal subdivision in Arizona, Minnesota, Montana, Nebraska, 

North Dakota, and South Dakota; 2) state legislative district (upper chamber) in 

Massachusetts; and 3) state legislative district (lower chamber) in Massachusetts; 

“District” is appended to the name of the entity

12 Municipality—legal county equivalent in Alaska (Anchorage and Skagway); 

“Municipality” is appended to the name of the entity

13 Municipio—legal county equivalent in Puerto Rico; “Municipio” is appended to the 

name of the entity

15 Parish—legal county equivalent in Louisiana; “Parish” is appended to the name of the 

entity

20 Barrio—minor civil division (MCD) in Puerto Rico; “barrio” is appended to the name 

of the entity

21 Borough—1) minor civil division (MCD) in New York; 2) MCD equivalent (independent place) in New Jersey and Pennsylvania; 3) incorporated place in Connecticut, 

New Jersey, and Pennsylvania; “borough” is appended to the name of the entity

22 Census county division (CCD)—statistical county subdivision in 20 states; “CCD” is 

appended to the name of the entity

23 Census subarea—statistical county subdivision in Alaska; “census subarea” is 

appended to the name of the entity

24 Subdistrict—minor civil division in the U.S. Virgin Islands; “subdistrict” is appended 

to the name of the entity

25 City—1) legal county equivalent in Maryland, Missouri, and Virginia (independent city); 2) minor civil division (MCD) equivalent in 23 states and the District of 

Columbia (independent place); 3) incorporated place in 49 states and the District of 

Columbia; 4) consolidated city in Connecticut (Milford) and Indiana (Indianapolis); 

“city” is appended to the name of the entity

26 County—minor civil division in American Samoa; “county” is appended to the name 

of the entity

27 District (election, magisterial)—minor civil division (MCD) in Virginia and West 

Virginia; “district” is appended to the name of the entity

28 District (commissioner, election, magisterial, supervisors’, or parish governing authority)—1) minor civil division (MCD) in Louisiana, Maryland, Mississippi, 

Nebraska, Tennessee, Virginia, and West Virginia; 2) tribal subdivision in Arizona and 

South Dakota; “District” is added before the name of the entity

29 Election precinct—minor civil division (MCD) in Illinois and Nebraska; “precinct” is 

appended to the name of the entity

30 Election precinct—minor civil division (MCD) in Illinois and Nebraska; “Precinct” is 

added before the name of the entity

31 Gore—minor civil division (MCD) in Maine and Vermont; “gore” is appended to the 

name of the entity

See endnotes at the end of the table.

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6-14 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Area Characteristics—Con.

32 Grant—minor civil division (MCD) in New Hampshire and Vermont; “grant” is 

appended to the name of the entity

35 Metro township—incorporated place in Utah; “metro township” is appended to the 

name of the entity

36 Location—minor civil division (MCD) in New Hampshire; “location” is appended to 

the name of the entity

37 Municipality—1) minor civil division (MCD) equivalent in Pennsylvania (independent 

place); 2) incorporated place in Alaska (Anchorage) and Pennsylvania; “municipality” 

is appended to the name of the entity

39 Plantation—minor civil division (MCD) in Maine; “plantation” is appended to the 

name of the entity

41 Barrio-pueblo—minor civil division (MCD) in Puerto Rico; “barrio-pueblo” is 

appended to the name of the entity

42 Purchase—minor civil division (MCD) in New Hampshire; “purchase” is appended to 

the name of the entity

43 Town—1) minor civil division (MCD) in eight states; 2) MCD equivalent in New Jersey, 

Pennsylvania, and South Dakota (independent place); 3) incorporated place in 30 

states; “town” is appended to the name of the entity

44 Township—minor civil division (MCD) in 16 states; “township” is appended to the 

name of the entity

45 Township—minor civil division (MCD) in Arkansas, Kansas, Minnesota, Nebraska, and 

North Carolina; “Township” is added before the name of the entity

46 Unorganized territory—minor civil division (MCD) in nine states; “UT” is appended to 

the name of the entity

47 Village—1) minor civil division (MCD) equivalent in New Jersey, Ohio, South Dakota, 

and Wisconsin (independent place); 2) incorporated place in 19 states; “village” is 

appended to the name of the entity

49 Charter township—minor civil division (MCD) in Michigan; “charter township” is 

appended to the name of the entity

51 Subbarrio—subminor civil division (sub-MCD) in Puerto Rico; “subbarrio” is 

appended to the name of the entity

52 Estate—subminor civil division (sub-MCD) in the U.S. Virgin Islands; “estate” is added 

before the name of the entity

53 City and borough—incorporated place in Alaska (Juneau, Sitka, and Wrangell); “city 

and borough” is appended to the name of the entity

55 Comunidad—statistical place (census designated place) in Puerto Rico; “comunidad” 

is appended to the name of the entity

57 Census designated place—statistical place in all 50 states; “CDP” is appended to the 

name of the entity

See endnotes at the end of the table.

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Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Area Characteristics—Con.

62 Zona urbana—statistical place (census designated place) in Puerto Rico; “zona 

urbana” is appended to the name of the entity

68 Census region—statistical division of the United States; “Region” is appended to the 

name of the entity

69 Census division—statistical division of the United States; “Division” is appended to 

the name of the entity

70 Urban growth area (UGA)—legal area in Oregon and Washington; “UGA” is appended 

to the name of the entity

75 Urbanized area (UA)—statistical urban area in all 50 states, the District of Columbia, 

and Puerto Rico; “Urbanized Area” is appended to the name of the entity

76 Urban cluster (UC)—statistical urban area in all 50 states and Puerto Rico; “Urban 

Cluster” is appended to the name of the entity

77 Alaska Native Regional Corporation—legal Alaska Native area in Alaska; “Alaska 

Native Regional Corporation” is appended to the name of the entity

78 Hawaiian home land—legal Native Hawaiian area in Hawaii; “Hawaiian Home Land” is 

appended to the name of the entity

79 Alaska Native village statistical area—statistical Alaska Native area in Alaska; 

“ANVSA” is appended to the name of the entity

80 Tribal designated statistical area—statistical American Indian reservation equivalent 

in California, New York, and Washington for federally recognized tribes without a 

legal land base outside of Oklahoma; “TDSA” is appended to the name of the entity

81 Colony—American Indian reservation in Nevada; “Colony” is appended to the name 

of the entity

82 Community—1) American Indian reservation in California, Minnesota, Nevada, 

Oregon, and Wisconsin; “Community” is appended to the name of the entity; 2) 

American Indian tribal subdivision in North Carolina and Oklahoma

83 Joint-use area—American Indian reservation equivalent in Kansas and New Mexico; 

“joint-use area” is appended to the name of the entity

84 Pueblo—American Indian reservation in New Mexico and Texas; “Pueblo” is appended 

to the name of the entity

85 Rancheria—American Indian reservation in California; “Rancheria” is appended to the 

name of the entity

86 Reservation—1) American Indian reservation in 34 states; 2) minor civil division 

(MCD) equivalent in Maine and New York; “Reservation” is appended to the name of 

the entity

87 Reserve—American Indian reservation in Alaska; “Reserve” is appended to the name 

of the entity

88 Oklahoma tribal statistical area—statistical American Indian reservation equivalent in 

Oklahoma; “OTSA” is appended to the name of the entity

See endnotes at the end of the table.

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Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Area Characteristics—Con.

89 Trust land—legal American Indian reservation equivalent in nine states; “Trust Land” 

is appended to the name of the entity

90 Joint-use Oklahoma tribal statistical area—statistical American Indian reservation 

equivalent in Oklahoma; “joint-use OTSA” is appended to the name of the entity

91 Ranch—American Indian reservation in Nevada; “Ranch” is appended to the name of 

the entity

92 State designated tribal statistical area—statistical American Indian reservation equivalent in Alabama, Delaware, Louisiana, New Jersey, North Carolina, South Carolina, 

and Virginia; “SDTSA” is appended to the name of the entity

93 Indian village—American Indian reservation in California; “Indian Village” is appended 

to the name of the entity

94 Village—American Indian reservation in California and Oregon; “Village” is appended 

to the name of the entity

95 Indian community—American Indian reservation in Michigan and Minnesota; “Indian 

Community” is appended to the name of the entity

96 Indian reservation—American Indian reservation in Arizona, California, Montana, 

Nevada, Oregon, South Dakota, and Washington; “Indian Reservation” is appended 

to the name of the entity

97 Indian rancheria—American Indian reservation in California; “Indian Rancheria” is 

appended to the name of the entity

98 Indian colony—American Indian reservation in Nevada and Oregon; “Indian Colony” is 

appended to the name of the entity

99 Pueblo de—American Indian reservation in New Mexico; “Pueblo de” is added before 

the name of the entity

9C Pueblo of—American Indian reservation in New Mexico; “Pueblo of” is added before 

the name of the entity

9D Settlement—American Indian reservation in Iowa; “Settlement” is appended to the 

name of the entity

BG Block group—statistical area in the United States and Puerto Rico; “Block Group” is 

added before the name (code) of the entity

BK Block—statistical area in the United States and Puerto Rico; “Block” is added before 

the name (code) of the entity

C1 Congressional district (at large)—congressional district in a single-district state 

(Alaska, Delaware, Montana, North Dakota, South Dakota, Vermont, and Wyoming); 

“Congressional District (at Large)” appears as the name of the entity

C2 Congressional district—congressional district in a state with more than one district 

(43 states); “Congressional District” is added before the name (code) of the entity

C3 Resident commissioner district (at large)—congressional district equivalent in Puerto 

Rico; “Resident Commissioner District (at Large)” appears as the name of the entity

C4 Delegate district (at large)—congressional district equivalent in the District of 

Columbia; “Delegate District (at Large)” appears as the name of the entity

See endnotes at the end of the table.

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Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Area Characteristics—Con.

CG Consolidated government—consolidated city in Georgia (Augusta-Richmond 

County); “consolidated government” is appended to the name of the entity

CN Corporation—incorporated place in West Virginia (Ranson); “corporation” is 

appended to the name of the entity

CT Census tract—statistical area in the United States and Puerto Rico; “Census Tract” is 

added before the name (modified code) of the entity

IB   Tribal block group—statistical area within specified legal American Indian areas; 

“Tribal Block Group” is added before the name (code) of the entity

IT   Tribal census tract—statistical area within specified legal American Indian areas; 

“Tribal Census Tract” is added before the name (modified code) of the entity

L1 Ward—state legislative district (upper chamber) equivalent in the District of 

Columbia; “Ward” is added before the name of the entity

L2 Senatorial district—state legislative district (upper chamber) in Nevada; “Senatorial 

District” is appended to the name of the entity

L3 Assembly district—state legislative district (lower chamber) in California, Nevada, 

New York, and Wisconsin; “Assembly District” is added before the name of the entity

L4 General assembly district—state legislative district (lower chamber) in New Jersey; 

“General Assembly District” is added before the name of the entity

L5 State legislative district—state legislative district (lower chamber) in Maryland; “State 

Legislative District” is added before the name of the entity

L6 State legislative subdistrict—state legislative district (lower chamber) in Maryland; 

“State Legislative Subdistrict” is added before the name of the entity

L8 State senate district—state legislative district (upper chamber) in Vermont; “State 

Senate District” is appended to the name of the entity

L9 State house district—state legislative district (lower chamber) in Vermont; “State 

House District” is appended to the name of the entity

LL State house district—state legislative district (lower chamber) in 41 states and Puerto 

Rico; “State House District” is added before the name of the entity

LU State senate district—state legislative district (upper chamber) in 47 states and 

Puerto Rico; “State Senate District” is added before the name of the entity

M0 Combined statistical area—statistical area in 45 states, the District of Columbia, and 

Puerto Rico; “CSA” is appended to the name of the entity

M1 Metropolitan statistical area—statistical area in all 50 states, the District of Columbia, 

and Puerto Rico; “Metro Area” is appended to the name of the entity

M2 Micropolitan statistical area—statistical area in 47 states and Puerto Rico; “Micro 

Area” is appended to the name of the entity

M3 Metropolitan division—statistical area in 17 states and the District of Columbia; 

“Metro Division” is appended to the name of the entity

M4 Combined New England city and town area—statistical area in Connecticut, Maine, 

Massachusetts, New Hampshire, Rhode Island, and Vermont; “Combined NECTA” is 

appended to the name of the entity

See endnotes at the end of the table.

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Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Area Characteristics—Con.

M5 Metropolitan New England city and town area—statistical area in Connecticut, Maine, 

Massachusetts, New Hampshire, Rhode Island, and Vermont; “Metropolitan NECTA” 

is appended to the name of the entity

M6 Micropolitan New England city and town area—statistical area in Connecticut, Maine, 

Massachusetts, New Hampshire, and Vermont; “Micropolitan NECTA” is appended to 

the name of the entity

M7 New England city and town area division—statistical area in Massachusetts and New 

Hampshire; “NECTA Division” is appended to the name of the entity

MG Metropolitan government—1) incorporated place in Tennessee (Lynchburg, Moore 

County); 2) consolidated city in Tennessee (Nashville-Davidson); “metropolitan government” is appended to the name of the entity

MT Metro government—consolidated city in Kentucky (Louisville/Jefferson County); 

“metro government” is appended to the name of the entity

OT Off-reservation trust land—trust land component of an American Indian reservation 

with associated trust land in 23 states; “Off-Reservation Trust Land” is appended to 

the name of the entity

P0 Public use microdata area (PUMA)—statistical area in all 50 states, the District of 

Columbia, Puerto Rico, Guam, and the U.S. Virgin Islands; “PUMA” is appended to 

the name of the entity

T1 Area—American Indian tribal subdivision in Arizona and Utah; “Area” is appended to 

the name of the entity

T2 Chapter—American Indian tribal subdivision in Arizona, New Mexico, and Utah; 

“Chapter” is appended to the name of the entity

T3 Segment—American Indian tribal subdivision in Minnesota, North Dakota, and South 

Dakota; “Segment” is appended to the name of the entity

TA Administrative area—American Indian tribal subdivision in Arizona; “Administrative 

Area” is appended to the name of the entity

TB Addition—American Indian tribal subdivision in Wisconsin; “Addition” is appended to 

the name of the entity

TC County district—statistical American Indian tribal subdivision in Oklahoma; “County 

District” is added before the name of the entity

UC Urban county—incorporated place in Kentucky (Lexington-Fayette); “urban county” 

is appended to the name of the entity

UG Unified government—1) incorporated place in Georgia (Cusseta-Chattahoochee 

County, Georgetown-Quitman County, and Webster County); 2) consolidated city in 

Georgia (Athens-Clarke County); “unified government” is appended to the name of 

the entity

V1 Voting district (VTD)—legal voting district in 32 states and Puerto Rico; “VTD” is 

added before the name of the entity

V2 Voting district (VTD)—legal voting district in 32 states; “VTD” is appended to the 

name of the entity

See endnotes at the end of the table.

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Field name

Data 

dictionary 

reference 

name

Maximum 

field size Data type

Area Characteristics—Con.

Z5 ZIP code tabulation area (5-digit)—statistical area in all 50 states, the District of 

Columbia, and Puerto Rico; “ZCTA5” is added before the name of the entity

Part Flag PARTFLAG 1

W  Not a part

P  Part

Special Area Codes

Urban Growth Area UGA 5

 00001–89999 Urban growth area

 A/N

 A/N

Endnotes

1. A unique, six-character identifier for each file series. See “How to Use This Product” for 

further information.

2. Identifies the geographic level for which the data tables (matrices) in the summary file 

have been summarized. The Summary Level Hierarchy Chart describes the hierarchical 

arrangement of the specified geographic areas with other geographic areas, if any. The 

summary level must be used in combination with the geographic area codes to identify a 

specific geographic area (for example, summary level 050 and a specific state and county 

code must be used together to locate the data for a particular county). See “How to Use 

This Product” for further information.

3. Indicates the version of a geographic entity, based on the date of the entity’s boundaries.

4. A portion of a given geographic entity, based on a certain geographic or population 

characteristic. Data are produced for one or more geographic components in addition to 

the whole geographic entity for a limited set of summary levels. The Redistricting Data 

Summary File products do not contain any geographic components. 

Geographic Component Description

00 Not a geographic component

01 Urban

04 Urban—in urbanized area

05 Urban—in urbanized area of 5,000,000 or more population

06 Urban—in urbanized area of 2,500,000 to 4,999,999 population

07 Urban—in urbanized area of 1,000,000 to 2,499,999 population

08 Urban—in urbanized area of 500,000 to 999,999 population

09 Urban—in urbanized area of 250,000 to 499,999 population

10 Urban—in urbanized area of 100,000 to 249,999 population

11 Urban—in urbanized area of 50,000 to 99,999 population

28 Urban—in urban cluster

29 Urban—in urban cluster of 25,000 to 49,999 population

30 Urban—in urban cluster of 10,000 to 24,999 population

31 Urban—in urban cluster of 5,000 to 9,999 population

32 Urban—in urban cluster of 2,500 to 4,999 population

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Endnotes—Con.

43 Rural

44 Rural—place

45 Rural—place of 2,500 or more population

46 Rural—place of 1,000 to 2,499 population

47 Rural—place of less than 1,000 population

48 Rural—not in place

49 Rural—farm

50 Urban portion of extended place

51 Rural portion of extended place

89 American Indian Reservation and Trust Land—Federal

90 American Indian Reservation and Trust Land—State

91 Oklahoma Tribal Statistical Area

92 Tribal Designated Statistical Area

93 Alaska Native Village Statistical Area

94 State Designated Tribal Statistical Area

95 Hawaiian Home Land

A0 In metropolitan or micropolitan statistical area

A1 In metropolitan or micropolitan statistical area—in principal city

A2 In metropolitan or micropolitan statistical area—not in principal city 

A3 In metropolitan or micropolitan statistical area—urban

A4 In metropolitan or micropolitan statistical area—urban—in urbanized area 

A5 In metropolitan or micropolitan statistical area—urban—in urban cluster

A6 In metropolitan or micropolitan statistical area—rural

A7 In metropolitan or micropolitan statistical area of 5,000,000 or more population

A8 In metropolitan or micropolitan statistical area of 2,500,000 to 4,999,999 population 

A9 In metropolitan or micropolitan statistical area of 1,000,000 to 2,499,999 population

AA In metropolitan or micropolitan statistical area of 500,000 to 999,999 population

AB In metropolitan or micropolitan statistical area of 250,000 to 499,999 population 

AC In metropolitan or micropolitan statistical area of 100,000 to 249,999 population 

AD In metropolitan or micropolitan statistical area of 50,000 to 99,999 population 

AE In metropolitan or micropolitan statistical area of 25,000 to 49,999 population 

AF In metropolitan or micropolitan statistical area of less than 25,000 population

C0 In metropolitan statistical area

C1 In metropolitan statistical area—in principal city

C2 In metropolitan statistical area—not in principal city 

C3 In metropolitan statistical area—urban

C4 In metropolitan statistical area—urban—in urbanized area 

C5 In metropolitan statistical area—urban—in urban cluster 

C6 In metropolitan statistical area—rural

C7 In metropolitan statistical area of 5,000,000 or more population

C8 In metropolitan statistical area of 2,500,000 to 4,999,999 population 

C9 In metropolitan statistical area of 1,000,000 to 2,499,999 population 

CA In metropolitan statistical area of 500,000 to 999,999 population

CB In metropolitan statistical area of 250,000 to 499,999 population 

CC In metropolitan statistical area of 100,000 to 249,999 population 

CD In metropolitan statistical area of less than 100,000 population

CE In metropolitan statistical area of 5,000,000 or more population—in principal city

CF In metropolitan statistical area of 5,000,000 or more population—not in principal city 

CG In metropolitan statistical area of 2,500,000 to 4,999,999 population—in principal 

city

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Endnotes—Con.

CH In metropolitan statistical area of 2,500,000 to 4,999,999 population—not in 

principal city 

CJ In metropolitan statistical area of 1,000,000 to 2,499,999 population—in principal city

CK In metropolitan statistical area of 1,000,000 to 2,499,999 population—not in principal 

city 

CL In metropolitan statistical area of 500,000 to 999,999 population—in principal city

CM In metropolitan statistical area of 500,000 to 999,999 population—not in principal city 

CN In metropolitan statistical area of 250,000 to 499,999 population—in principal city

CP In metropolitan statistical area of 250,000 to 499,999 population—not in principal city 

CQ In metropolitan statistical area of 100,000 to 249,999 population—in principal city

CR In metropolitan statistical area of 100,000 to 249,999 population—not in principal city 

CS In metropolitan statistical area of less than 100,000 population—in principal city

CT In metropolitan statistical area of less than 100,000 population—not in principal city 

E0 In micropolitan statistical area

E1 In micropolitan statistical area—in principal city

E2 In micropolitan statistical area—not in principal city 

E3 In micropolitan statistical area—urban

E4 In micropolitan statistical area—urban—in urbanized area 

E5 In micropolitan statistical area—urban—in urban cluster 

E6 In micropolitan statistical area—rural

E7 In micropolitan statistical area of 100,000 or more population 

E8 In micropolitan statistical area of 50,000 to 99,999 population 

E9 In micropolitan statistical area of 25,000 to 49,999 population 

EA In micropolitan statistical area of less than 25,000 population

EB In micropolitan statistical area of 100,000 or more population—in principal city

EC In micropolitan statistical area of 100,000 or more population—not in principal city 

ED In micropolitan statistical area of 50,000 to 99,999 population—in principal city

EE In micropolitan statistical area of 50,000 to 99,999 population—not in principal city 

EF In micropolitan statistical area of 25,000 to 49,999 population—in principal city

EG In micropolitan statistical area of 25,000 to 49,999 population—not in principal city 

EH In micropolitan statistical area of less than 25,000 population—in principal city

EJ In micropolitan statistical area of less than 25,000 population—not in principal city 

G0 Not in metropolitan or micropolitan statistical area

G1 Not in metropolitan or micropolitan statistical area—urban

G2 Not in metropolitan or micropolitan statistical area—urban—in urbanized area 

G3 Not in metropolitan or micropolitan statistical area—urban—in urban cluster 

G4 Not in metropolitan or micropolitan statistical area—rural

H0 Not in metropolitan statistical area

H1 Not in metropolitan statistical area—urban

H2 Not in metropolitan statistical area—urban—in urbanized area 

H3 Not in metropolitan statistical area—urban—in urban cluster 

H4 Not in metropolitan statistical area—rural

J0 In combined statistical area

L0 Not in combined statistical area 

M0 In New England city and town area

M1 In New England city and town area—in principal city

M2 In New England city and town area—not in principal city 

M3 In New England city and town area—urban

M4 In New England city and town area—urban—in urbanized area 

M5 In New England city and town area—urban—in urban cluster 

M6 In New England city and town area—rural

P0 In combined New England city and town area

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Endnotes—Con.

5. Indicates an iteration (repetition) for the specified geographic entity of the data tables 

(matrices) on the summary file for a population or housing characteristic. 

6. The sequence number of the table file within the set of physical files for the state (i.e., the 

geographic header file and one or more table files). See “How to Use This Product” for 

more information.

7. The logical record is the complete record for a geographic entity defined by the summary 

level, but exclusive of the characteristic iteration. A logical record may have one or more 

parts (or segments). Each logical record has an assigned sequential integer number within 

the file. See “How to Use This Product” for further information.

8. A set of codes that uniquely identify the geographic entity and also its summary 

level, geographic variant, and geographic component. Consists of the summary level 

code (SUMLEV), geographic variant code (GEOVAR), geographic component code 

(GEOCOMP), the characters “US”, and one or more geographic codes that uniquely 

identify the geographic entity. The set of geographic codes varies by summary level.

9. Consists of one or more geographic codes that uniquely identify the geographic entity 

(but not its summary level or any geographic variant or geographic component). The set 

of geographic codes varies by summary level.

10. See Appendix A, “Geographic Terms and Concepts,” for definition of this field.

11. The Federal Information Processing Standards (FIPS) codes were withdrawn as a standard in 

2005. The Census Bureau, however, renamed these codes as Federal Information Processing 

Series codes and retained the acronym. The two-digit state and congressional district 

and three-digit county FIPS codes (former FIPS 5, 9, and 6, respectively) are unchanged, 

but with oversight transferred to the American National Standards Institute (ANSI). The 

five-digit FIPS 55 codes are no longer a federal code standard; however they are retained 

in Census Bureau files as administrative codes and used as primary key codes for many 

geographic entity types. The U.S. Geological Survey has received ANSI oversight for a code 

standard that uses the Geographic Names Information System identifier (GNIS ID). 

The ANSI standard using the GNIS ID as the official codes for Named Physical and Cultural 

Geographic Features of the United States and Puerto Rico also is included in Census 

Bureau files for state, county, county subdivision, place, consolidated city, American 

Indian area, Alaska Native area, Hawaiian home land, American Indian tribal subdivision, 

subminor civil division, and estate, or equivalent features. The Census Bureau references 

these fields in the geographic header using the term National Standard (NS) code. The 

codes represent the official numeric GNIS ID as an eight-digit character field with leading 

zeros. The Census Bureau treats the NS codes as supplemental standard codes.

The following lists the published code standards used for the 2020 Census (with its 

associated previous standard):

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Endnotes—Con.

 • INCITS.38-2009, Codes for the Identification of the States, the District of Columbia, 

Puerto Rico, and the Insular Areas of the United States (Formerly FIPS 5-2).

 • INCITS.31-2009, Codes for the Identification of Counties and Equivalent Areas of the 

United States, Puerto Rico, and the Insular Areas of the United States (Formerly FIPS 

6-4).

 • INCITS.454-2009, Codes for the Identification of Metropolitan and Micropolitan 

Statistical Areas and Related Areas of the United States and Puerto Rico (Formerly 

FIPS 8-6).

 • NCITS.455-2009, Codes for the Identification of Congressional Districts and 

Equivalent Areas of the United States, Puerto Rico, and the Insular Areas (Formerly 

FIPS 9-1).

 • INCITS.446-2008, (GNIS) Identifying Attributes for Named Physical and Cultural 

Geographic Features (Except Roads and Highways) of the United States, Its 

Territories, Outlying Areas, and Freely Associated Areas, and the Waters of the Same 

to the Limit of the Twelve-Mile Statutory Zone (Formerly FIPS 55-4). 

Note: INCITS refers to InterNational Committee for Information Technology Standards.

12. Puerto Rico only.

13. U.S. Virgin Islands only.

14. Federal Information Processing Series (FIPS) 55 codes are assigned by state. Because 

American Indian areas and tribal subdivisions can exist in more than one state, multiple 

FIPS 55 codes can exist for the entity.

15. Urban Areas, Urban/Rural classification, ZIP Code Tabulation Areas, and Public Use 

Microdata Areas are not available in the Redistricting Data products.

16. Blank values in the Congressional District (116th) field indicate areas where no congressional district was assigned by state redistricting officials.

17. Congressional District (118th), Congressional District (119th), Congressional District 

(120th), and Congressional District (121st) are reserved for areas established after reapportionment and redistricting.

18. State legislative district codes have three characters and can include a hyphen (-). The 

code ZZZ indicates state legislative districts not defined. In the District of Columbia and 

Nebraska, both of which have a single legislative body, the state legislative districts are 

reported as upper chamber districts, and no record is produced for the lower chamber 

districts.

19. State Legislative District—Upper and Lower Chamber—for years 2022, 2024, 2026, and 

2028 are reserved for areas established after redistricting.

20. Voting district codes can have one to six characters including special characters of a 

hyphen (-), dot (.), and forward slash (/). If the code contains less than six characters, the 

field is right-justified with leading blanks. The code ZZZZZZ indicates voting district not 

defined in a county or equivalent area containing one or more defined voting districts.

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Endnotes—Con.

21. Land area measurement in square meters. The accuracy of the area measurement is limited by the inaccuracy inherent in the mapping of the various boundary features in the 

Census Bureau’s geographic database. Land area includes areas classified as intermittent 

water, swamps, and glaciers, which appear on census maps and in the Census Bureau’s 

geographic database as hydrographic features. Square miles can be derived by dividing 

square meters by 2,589,988. See Appendix A, “Geographic Terms and Concepts,” for definition of this field.

22. Water area measurement in square meters. The accuracy of the area measurement is 

limited by the inaccuracy inherent in the mapping of the various boundary features in the 

Census Bureau’s geographic database. Water area excludes areas classified as intermittent water, swamps, and glaciers, which are treated as land even though they appear on 

census maps and in the Census Bureau’s geographic database as hydrographic features. 

Square miles can be derived by dividing square meters by 2,589,988. See Appendix A, 

“Geographic Terms and Concepts,” for definition of this field.

23. Fields BASENAME and NAME contain the name of the lowest-level entity represented 

by the summary level. For legal entities, the name is the one reported to the U.S. Census 

Bureau in the Boundary and Annexation Survey or by other appropriate sources, such 

as state education officials for school districts. For statistical entities, the name is determined by the Office of Management and Budget for metropolitan and micropolitan areas. 

The remaining statistical area names usually are supplied by tribal, state, or local sources 

according to published criteria. For redistricting data entities, names are reported by the 

state redistricting data liaison. For other areas, the name is determined by the local officials, usually in cooperation with the Census Bureau. The NAME field also contains the 

legal/statistical area description (LSAD), when appropriate, and sometimes contains the 

state abbreviation. When the summary level data represent only part of the area specified 

in the name, the NAME field usually will have “(part)” appended to the name to designate 

that this entry for the entity represents only a part of the total entity.

24. The total number of persons enumerated in the specified geographic entity.

25. The total number of housing units enumerated in the specified geographic entity.

26. Latitude in degrees, to seven decimal places, of a point within the geographic area represented by the summary level. The character immediately preceding the first digit of 

the latitude of an internal point identifies the direction (hemisphere): a plus sign (+) indicates the Northern Hemisphere; a minus sign (–) indicates the Southern Hemisphere. See 

Appendix A, “Geographic Terms and Concepts,” for definition of this field.

27. Longitude in degrees, to seven decimal places, of a point within the geographic area 

represented by the summary level. The character immediately preceding the first digit 

of the longitude of an internal point identifies the direction (hemisphere): a plus sign (+) 

indicates the Eastern hemisphere; a minus sign (–) indicates the Western Hemisphere. A 

point on the 180th meridian is assigned to the Western Hemisphere (–180.0000000). See 

Appendix A, “Geographic Terms and Concepts,” for definition of this field.

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TABLE (MATRIX) SECTION 

The 2020 Census State Redistricting Data (Public Law 94-171) Summary File is provided as a 

set, including one geographic header file and three data files. The data files are presented in 

the table (matrix) section and are 8-bit Unicode Transformation Format (UTF-8) with variable length fields that are pipe delimited. The data fields are numeric with the maximum size 

shown in MAX SIZE. Each data file begins with a subset of fields from the geographic header 

file. They are: file identification (FILEID), state/U.S. abbreviation (STUSAB), characteristic 

iteration (CHARITER), two-character file sequence number (CIFSN), and a logical record number (LOGRECNO). 

Field name Data dictionary 

reference name

Max 

size

Data 

type

File 01—File Linking Fields (pipe delimited).

graphic header and other files in the dataset. 

File Identification

State/U.S. Abbreviation (USPS)

Characteristic Iteration

Characteristic Iteration File Sequence Number

Logical Record Number

These fields link File 01 with the geoFILEID 6 A/N

STUSAB 2 A

CHARITER 3 A/N

CIFSN 2 A/N

LOGRECNO 7 N

Table number and contents Data dictionary 

reference name

SegmentMax 

size

P1. RACE [71]

Universe: Total population

Total:

 Population of one race:

 White alone

 Black or African American alone

 American Indian and Alaska Native alone

 Asian alone

 Native Hawaiian and Other Pacific Islander alone

 Some Other Race alone

 Population of two or more races:

 Population of two races:

 White; Black or African American

 White; American Indian and Alaska Native

 White; Asian

 White; Native Hawaiian and Other Pacific Islander

 White; Some Other Race

 Black or African American; American Indian and 

     Alaska Native

 Black or African American; Asian

 Black or African American; Native Hawaiian 

     and Other Pacific Islander

P0010001

P0010002

P0010003

P0010004

P0010005

P0010006

P0010007

P0010008

P0010009

P0010010

P0010011

P0010012

P0010013

P0010014

P0010015

P0010016

P0010017

P0010018

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 99 of

247
6-26 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 Black or African American; Some Other Race

 American Indian and Alaska Native; Asian

 American Indian and Alaska Native; Native 

     Hawaiian and Other Pacific Islander

 American Indian and Alaska Native; Some Other 

     Race

 Asian; Native Hawaiian and Other Pacific Islander

 Asian; Some Other Race

 Native Hawaiian and Other Pacific Islander; Some 

     Other Race

 Population of three races:

 White; Black or African American; American 

     Indian and Alaska Native

 White; Black or African American; Asian

 White; Black or African American; Native 

     Hawaiian and Other Pacific Islander

 White; Black or African American; Some Other 

     Race

 White; American Indian and Alaska Native; Asian

 White; American Indian and Alaska Native; Native 

     Hawaiian and Other Pacific Islander

 White; American Indian and Alaska Native; Some 

     Other Race

 White; Asian; Native Hawaiian and Other Pacific 

     Islander

 White; Asian; Some Other Race

 White; Native Hawaiian and Other Pacific Islander; 

     Some Other Race

 Black or African American; American Indian and 

     Alaska Native; Asian

 Black or African American; American Indian and 

     Alaska Native; Native Hawaiian and Other 

     Pacific Islander

 Black or African American; American Indian and 

     Alaska Native; Some Other Race

 Black or African American; Asian; Native Hawaiian 

     and Other Pacific Islander

 Black or African American; Asian; Some Other 

     Race

 Black or African American; Native Hawaiian and 

     Other Pacific Islander; Some Other Race

 American Indian and Alaska Native; Asian; Native 

     Hawaiian and Other Pacific Islander

P0010019

P0010020

P0010021

P0010022

P0010023

P0010024

P0010025

P0010026

P0010027

P0010028

P0010029

P0010030

P0010031

P0010032

P0010033

P0010034

P0010035

P0010036

P0010037

P0010038

P0010039

P0010040

P0010041

P0010042

P0010043

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 100

of 247
Data Dictionary 6-27

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 American Indian and Alaska Native; Asian; 

     Some Other Race

 American Indian and Alaska Native; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race

 Asian; Native Hawaiian and Other Pacific Islander; 

     Some Other Race

 Population of four races:

 White; Black or African American; American 

     Indian and Alaska Native; Asian

 White; Black or African American; American 

     Indian and Alaska Native; Native Hawaiian and 

     Other Pacific Islander

 White; Black or African American; American 

     Indian and Alaska Native; Some Other Race

 White; Black or African American; Asian; Native 

     Hawaiian and Other Pacific Islander

 White; Black or African American; Asian; Some 

     Other Race

 White; Black or African American; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race

 White; American Indian and Alaska Native; Asian; 

     Native Hawaiian and Other Pacific Islander

 White; American Indian and Alaska Native; Asian; 

     Some Other Race

 White; American Indian and Alaska Native; Native 

     Hawaiian and Other Pacific Islander; Some Other

      Race

 White; Asian; Native Hawaiian and Other Pacific 

     Islander; Some Other Race

 Black or African American; American Indian and 

     Alaska Native; Asian; Native Hawaiian and Other 

     Pacific Islander

 Black or African American; American Indian and 

     Alaska Native; Asian; Some Other Race

 Black or African American; American Indian and 

     Alaska Native; Native Hawaiian and Other 

     Pacific Islander; Some Other Race

 Black or African American; Asian; Native Hawaiian 

     and Other Pacific Islander; Some Other Race

 American Indian and Alaska Native; Asian; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race

P0010044

P0010045

P0010046

P0010047

P0010048

P0010049

P0010050

P0010051

P0010052

P0010053

P0010054

P0010055

P0010056

P0010057

P0010058

P0010059

P0010060

P0010061

P0010062

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 101

of 247
6-28 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 Population of five races: P0010063

 White; Black or African American; American 

     Indian and Alaska Native; Asian; Native 

     Hawaiian and Other Pacific Islander P0010064

 White; Black or African American; American 

     Indian and Alaska Native; Asian; Some Other 

     Race P0010065

 White; Black or African American; American 

     Indian and Alaska Native; Native Hawaiian and 

     Other Pacific Islander; Some Other Race P0010066

 White; Black or African American; Asian; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race P0010067

 White; American Indian and Alaska Native; Asian; 

     Native Hawaiian and Other Pacific Islander; 

     Some Other Race P0010068

 Black or African American; American Indian and 

     Alaska Native; Asian; Native Hawaiian and Other 

     Pacific Islander; Some Other Race P0010069

 Population of six races: P0010070

 White; Black or African American; American 

     Indian and Alaska Native; Asian; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race P0010071

P2. HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE [73]

Universe: Total population

Total: P0020001

 Hispanic or Latino P0020002

 Not Hispanic or Latino: P0020003

 Population of one race: P0020004

 White alone P0020005

 Black or African American alone P0020006

 American Indian and Alaska Native alone P0020007

 Asian alone P0020008

 Native Hawaiian and Other Pacific Islander alone P0020009

 Some Other Race alone P0020010

 Population of two or more races: P0020011

 Population of two races: P0020012

 White; Black or African American P0020013

 White; American Indian and Alaska Native P0020014

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 102

of 247
Data Dictionary 6-29

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 White; Asian

 White; Native Hawaiian and Other Pacific 

      Islander

 White; Some Other Race

 Black or African American; American Indian 

      and Alaska Native

 Black or African American; Asian

 Black or African American; Native Hawaiian and 

      Other Pacific Islander

 Black or African American; Some Other Race

 American Indian and Alaska Native; Asian

 American Indian and Alaska Native; Native 

      Hawaiian and Other Pacific Islander

 American Indian and Alaska Native; Some Other 

      Race

 Asian; Native Hawaiian and Other Pacific 

      Islander

 Asian; Some Other Race

 Native Hawaiian and Other Pacific Islander; 

      Some Other Race

 Population of three races:

 White; Black or African American; American 

      Indian and Alaska Native

 White; Black or African American; Asian

 White; Black or African American; Native 

      Hawaiian and Other Pacific Islander

 White; Black or African American; Some Other 

      Race

 White; American Indian and Alaska Native; 

      Asian

 White; American Indian and Alaska Native; 

      Native Hawaiian and Other Pacific Islander

 White; American Indian and Alaska Native; 

      Some Other Race

 White; Asian; Native Hawaiian and Other Pacific 

      Islander

 White; Asian; Some Other Race

 White; Native Hawaiian and Other Pacific 

      Islander; Some Other Race

 Black or African American; American Indian 

      and Alaska Native; Asian

P0020015

P0020016

P0020017

P0020018

P0020019

P0020020

P0020021

P0020022

P0020023

P0020024

P0020025

P0020026

P0020027

P0020028

P0020029

P0020030

P0020031

P0020032

P0020033

P0020034

P0020035

P0020036

P0020037

P0020038

P0020039

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 103

of 247
6-30 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 Black or African American; American Indian 

      and Alaska Native; Native Hawaiian and Other 

      Pacific Islander

 Black or African American; American Indian 

      and Alaska Native; Some Other Race

 Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander

 Black or African American; Asian; Some Other 

      Race

 Black or African American; Native Hawaiian and 

      Other Pacific Islander; Some Other Race

 American Indian and Alaska Native; Asian; 

      Native Hawaiian and Other Pacific Islander

 American Indian and Alaska Native; Asian; 

      Some Other Race

 American Indian and Alaska Native; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

 Asian; Native Hawaiian and Other Pacific 

      Islander; Some Other Race

 Population of four races:

 White; Black or African American; American 

      Indian and Alaska Native; Asian

 White; Black or African American; American 

      Indian and Alaska Native; Native Hawaiian and 

      Other Pacific Islander

 White; Black or African American; American 

      Indian and Alaska Native; Some Other Race

 White; Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander

 White; Black or African American; Asian; Some 

      Other Race

 White; Black or African American; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

 White; American Indian and Alaska Native; 

      Asian; Native Hawaiian and Other Pacific 

      Islander

 White; American Indian and Alaska Native; 

      Asian; Some Other Race

P0020040

P0020041

P0020042

P0020043

P0020044

P0020045

P0020046

P0020047

P0020048

P0020049

P0020050

P0020051

P0020052

P0020053

P0020054

P0020055

P0020056

P0020057

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 104

of 247
Data Dictionary 6-31

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 White; American Indian and Alaska Native; 

      Native Hawaiian and Other Pacific 

      Islander; Some Other Race

 White; Asian; Native Hawaiian and Other Pacific 

      Islander; Some Other Race

 Black or African American; American Indian 

      and Alaska Native; Asian; Native Hawaiian and 

      Other Pacific Islander

 Black or African American; American Indian 

      and Alaska Native; Asian; Some Other Race

 Black or African American; American Indian 

      and Alaska Native; Native Hawaiian and Other 

      Pacific Islander; Some Other Race

 Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

 American Indian and Alaska Native; Asian; 

      Native Hawaiian and Other Pacific Islander; 

      Some Other Race

 Population of five races:

 White; Black or African American; American 

      Indian and Alaska Native; Asian; Native 

      Hawaiian and Other Pacific Islander

 White; Black or African American; American 

      Indian and Alaska Native; Asian; Some Other 

      Race

 White; Black or African American; American 

      Indian and Alaska Native; Native Hawaiian and 

      Other Pacific Islander; Some Other Race

 White; Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

 White; American Indian and Alaska Native; 

      Asian; Native Hawaiian and Other Pacific 

      Islander; Some Other Race

 Black or African American; American Indian 

      and Alaska Native; Asian; Native Hawaiian and 

      Other Pacific Islander; Some Other Race

 Population of six races:

 White; Black or African American; American 

      Indian and Alaska Native; Asian; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

P0020058

P0020059

P0020060

P0020061

P0020062

P0020063

P0020064

P0020065

P0020066

P0020067

P0020068

P0020069

P0020070

P0020071

P0020072

P0020073

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 105

of 247
6-32 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Field name Data dictionary 

reference name

Max 

size

Data 

type

File 02—File Linking Fields (pipe delimited). These fields link File 02 with the geographic 

header and other files in the dataset. 

File Identification FILEID 6

State/U.S.-Abbreviation (USPS) STUSAB 2

Characteristic Iteration CHARITER 3

Characteristic Iteration File Sequence Number CIFSN 2

Logical Record Number LOGRECNO 7

A/N

A

A/N

A/N

N

Table number and contents Data dictionary 

reference name

SegmentMax 

size

P3. RACE FOR THE POPULATION 18 YEARS AND OVER [71]

Universe: Total population 18 years and over

Total:

 Population of one race:

 White alone

 Black or African American alone

 American Indian and Alaska Native alone

 Asian alone

 Native Hawaiian and Other Pacific Islander alone

 Some Other Race alone

 Population of two or more races:

 Population of two races:

 White; Black or African American

 White; American Indian and Alaska Native

 White; Asian

 White; Native Hawaiian and Other Pacific Islander

 White; Some Other Race

 Black or African American; American Indian and 

     Alaska Native

 Black or African American; Asian

 Black or African American; Native Hawaiian and 

     Other Pacific Islander

 Black or African American; Some Other Race

 American Indian and Alaska Native; Asian

 American Indian and Alaska Native; Native 

     Hawaiian and Other Pacific Islander

 American Indian and Alaska Native; Some Other 

     Race

 Asian; Native Hawaiian and Other Pacific Islander

 Asian; Some Other Race

 Native Hawaiian and Other Pacific Islander; Some 

     Other Race

P0030001

P0030002

P0030003

P0030004

P0030005

P0030006

P0030007

P0030008

P0030009

P0030010

P0030011

P0030012

P0030013

P0030014

P0030015

P0030016

P0030017

P0030018

P0030019

P0030020

P0030021

P0030022

P0030023

P0030024

P0030025

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 106

of 247
Data Dictionary 6-33

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 Population of three races:

 White; Black or African American; American 

     Indian and Alaska Native

 White; Black or African American; Asian

 White; Black or African American; Native 

     Hawaiian and Other Pacific Islander

 White; Black or African American; Some Other 

     Race

 White; American Indian and Alaska Native; Asian

 White; American Indian and Alaska Native; Native 

     Hawaiian and Other Pacific Islander

 White; American Indian and Alaska Native; Some 

     Other Race

 White; Asian; Native Hawaiian and Other Pacific 

     Islander

 White; Asian; Some Other Race

 White; Native Hawaiian and Other Pacific Islander; 

     Some Other Race

 Black or African American; American Indian and 

     Alaska Native; Asian

 Black or African American; American Indian and 

     Alaska Native; Native Hawaiian and Other 

     Pacific Islander

 Black or African American; American Indian and 

     Alaska Native; Some Other Race

 Black or African American; Asian; Native Hawaiian 

     and Other Pacific Islander

 Black or African American; Asian; Some Other 

     Race

 Black or African American; Native Hawaiian and 

     Other Pacific Islander; Some Other Race

 American Indian and Alaska Native; Asian; Native 

     Hawaiian and Other Pacific Islander

 American Indian and Alaska Native; Asian; Some 

     Other Race

 American Indian and Alaska Native; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race

 Asian; Native Hawaiian and Other Pacific Islander; 

     Some Other Race

 Population of four races:

P0030026

P0030027

P0030028

P0030029

P0030030

P0030031

P0030032

P0030033

P0030034

P0030035

P0030036

P0030037

P0030038

P0030039

P0030040

P0030041

P0030042

P0030043

P0030044

P0030045

P0030046

P0030047

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 107

of 247
6-34 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 White; Black or African American; American 

     Indian and Alaska Native; Asian

 White; Black or African American; American 

     Indian and Alaska Native; Native Hawaiian and 

     Other Pacific Islander

 White; Black or African American; American 

     Indian and Alaska Native; Some Other Race

 White; Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander

 White; Black or African American; Asian; Some 

     Other Race

 White; Black or African American; Native 

     Hawaiian and Other Pacific Islander; Some 

     Other Race

 White; American Indian and Alaska Native; Asian; 

     Native Hawaiian and Other Pacific Islander

 White; American Indian and Alaska Native; Asian; 

     Some Other Race

 White; American Indian and Alaska Native; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race

 White; Asian; Native Hawaiian and Other Pacific 

     Islander; Some Other Race

 Black or African American; American Indian and 

     Alaska Native; Asian; Native Hawaiian and Other 

     Pacific Islander

 Black or African American; American Indian and 

     Alaska Native; Asian; Some Other Race

 Black or African American; American Indian 

     and Alaska Native; Native Hawaiian and Other 

     Pacific Islander; Some Other Race

 Black or African American; Asian; Native Hawaiian 

     and Other Pacific Islander; Some Other Race

 American Indian and Alaska Native; Asian; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race

 Population of five races

 White; Black or African American; American 

     Indian and Alaska Native; Asian; Native 

     Hawaiian and Other Pacific Islander

 White; Black or African American; American 

     Indian and Alaska Native; Asian; Some Other 

     Race

P0030048

P0030049

P0030050

P0030051

P0030052

P0030053

P0030054

P0030055

P0030056

P0030057

P0030058

P0030059

P0030060

P0030061

P0030062

P0030063

P0030064

P0030065

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 108

of 247
Data Dictionary 6-35

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 Population of five races:

 White; Black or African American; Asian; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race

 White; American Indian and Alaska Native; Asian; 

     Native Hawaiian and Other Pacific Islander; 

     Some Other Race

 Black or African American; American Indian and 

     Alaska Native; Asian; Native Hawaiian and Other 

     Pacific Islander; Some Other Race

 Population of six races:

 White; Black or African American; American 

     Indian and Alaska Native; Asian; Native 

     Hawaiian and Other Pacific Islander; Some Other 

     Race

P4. HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE FOR THE POPULATION 

18 YEARS AND OVER [73]

Universe: Total population 18 years and over

Total:

 Hispanic or Latino

 Not Hispanic or Latino:

 Population of one race:

 White alone

 Black or African American alone

 American Indian and Alaska Native alone

 Asian alone

 Native Hawaiian and Other Pacific Islander alone

 Some Other Race alone

 Population of two or more races:

 Population of two races:

 White; Black or African American

 White; American Indian and Alaska Native

 White; Asian

 White; Native Hawaiian and Other Pacific 

      Islander

 White; Some Other Race

 Black or African American; American Indian 

      and Alaska Native

 Black or African American; Asian

 Black or African American; Native Hawaiian and 

      Other Pacific Islander

 Black or African American; Some Other Race

P0030066

P0030067

P0030068

P0030069

P0030070

P0030071

P0040001

P0040002

P0040003

P0040004

P0040005

P0040006

P0040007

P0040008

P0040009

P0040010

P0040011

P0040012

P0040013

P0040014

P0040015

P0040016

P0040017

P0040018

P0040019

P0040020

P0040021

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 109

of 247
6-36 Data Dictionary

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Table number and contents Data dictionary 

reference name

SegmentMax 

size

 American Indian and Alaska Native; Asian 

 American Indian and Alaska Native; Native 

      Hawaiian and Other Pacific Islander

 American Indian and Alaska Native; Some Other 

      Race

 Asian; Native Hawaiian and Other Pacific 

      Islander

 Asian; Some Other Race

 Native Hawaiian and Other Pacific Islander; 

      Some Other Race

 Population of three races:

 White; Black or African American; American 

      Indian and Alaska Native

 White; Black or African American; Asian

 White; Black or African American; Native 

      Hawaiian and Other Pacific Islander

 White; Black or African American; Some Other 

      Race

 White; American Indian and Alaska Native; 

      Asian

 White; American Indian and Alaska Native; 

      Native Hawaiian and Other Pacific Islander

 White; American Indian and Alaska Native; 

      Some Other Race

 White; Asian; Native Hawaiian and Other 

      Pacific Islander

 White; Asian; Some Other Race

 White; Native Hawaiian and Other Pacific 

      Islander; Some Other Race

 Black or African American; American Indian 

      and Alaska Native; Asian

 Black or African American; American Indian 

      and Alaska Native; Native Hawaiian and Other 

      Pacific Islander

 Black or African American; American Indian 

      and Alaska Native; Some Other Race

 Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander

 Black or African American; Asian; Some Other 

      Race

 Black or African American; Native Hawaiian and 

      Other Pacific Islander; Some Other Race

P0040022

P0040023

P0040024

P0040025

P0040026

P0040027

P0040028

P0040029

P0040030

P0040031

P0040032

P0040033

P0040034

P0040035

P0040036

P0040037

P0040038

P0040039

P0040040

P0040041

P0040042

P0040043

P0040044

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

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Table number and contents Data dictionary 

reference name

SegmentMax 

size

 American Indian and Alaska Native; Asian; 

      Native Hawaiian and Other Pacific Islander

 American Indian and Alaska Native; Asian; 

      Some Other Race

 American Indian and Alaska Native; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

 Asian; Native Hawaiian and Other Pacific 

      Islander; Some Other Race

 Population of four races:

 White; Black or African American; American 

      Indian and Alaska Native; Asian

 White; Black or African American; American 

      Indian and Alaska Native; Native Hawaiian and 

      Other Pacific Islander

 White; Black or African American; American 

      Indian and Alaska Native; Some Other Race

 White; Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander

 White; Black or African American; Asian; Some 

      Other Race

 White; Black or African American; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

 White; American Indian and Alaska Native; 

      Asian; Native Hawaiian and Other Pacific 

      Islander

 White; American Indian and Alaska Native; 

      Asian; Some Other Race

 White; American Indian and Alaska Native; 

      Native Hawaiian and Other Pacific Islander; 

      Some Other Race

 White; Asian; Native Hawaiian and Other 

      Pacific Islander; Some Other Race

 Black or African American; American Indian 

      and Alaska Native; Asian; Native Hawaiian and 

      Other Pacific Islander

 Black or African American; American Indian 

      and Alaska Native; Asian; Some Other Race

 Black or African American; American Indian 

      and Alaska Native; Native Hawaiian and Other 

      Pacific Islander; Some Other Race

P0040045

P0040046

P0040047

P0040048

P0040049

P0040050

P0040051

P0040052

P0040053

P0040054

P0040055

P0040056

P0040057

P0040058

P0040059

P0040060

P0040061

P0040062

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

02

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

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Table number and contents Data dictionary 

reference name

SegmentMax 

size

 Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

 American Indian and Alaska Native; Asian; 

      Native Hawaiian and Other Pacific Islander; 

      Some Other Race

 Population of five races:

 White; Black or African American; American 

      Indian and Alaska Native; Asian; Native 

      Hawaiian and Other Pacific Islander

 White; Black or African American; American 

      Indian and Alaska Native; Asian; Some Other 

      Race

 White; Black or African American; American 

      Indian and Alaska Native; Native Hawaiian and 

      Other Pacific Islander; Some Other Race

 White; Black or African American; Asian; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

 White; American Indian and Alaska Native; 

      Asian; Native Hawaiian and Other Pacific 

      Islander; Some Other Race

 Black or African American; American Indian 

      and Alaska Native; Asian; Native Hawaiian and 

      Other Pacific Islander; Some Other Race

 Population of six races:

 White; Black or African American; American 

      Indian and Alaska Native; Asian; Native 

      Hawaiian and Other Pacific Islander; Some 

      Other Race

H1. OCCUPANCY STATUS [3]

Universe: Housing units

Total:

 Occupied

 Vacant

P0040063

P0040064

P0040065

P0040066

P0040067

P0040068

P0040069

P0040070

P0040071

P0040072

P0040073

H0010001

H0010002

H0010003

02

02

02

02

02

02

02

02

02

02

02

02

02

02

9

9

9

9

9

9

9

9

9

9

9

9

9

9

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Field name Data dictionary 

reference name

Max 

size

Data 

type

File 03—File Linking Fields (pipe delimited). These fields link File 03 with the geographic 

header and other files in the dataset. 

File Identification FILEID 6

State/U.S.-Abbreviation (USPS) STUSAB 2

Characteristic Iteration CHARITER 3

Characteristic Iteration File Sequence Number CIFSN 2

Logical Record Number LOGRECNO 7

A/N

A

A/N

A/N

N

Table number and contents Data dictionary 

reference name

SegmentMax 

size

P5. GROUP QUARTERS POPULATION BY MAJOR GROUP QUARTERS TYPE [10]

Universe: Population in group quarters

Total: P0050001

 Institutionalized population: P0050002

 Correctional facilities for adults P0050003

 Juvenile facilities P0050004

 Nursing facilities/Skilled-nursing facilities P0050005

 Other institutional facilities P0050006

 Noninstitutionalized population: P0050007

 College/University student housing P0050008

 Military quarters P0050009

 Other noninstitutional facilities P0050010

03

03

03

03

03

03

03

03

03

03

9

9

9

9

9

9

9

9

9

9

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Chapter 7.

2020 Census: Operational Overview and

Disclosure Avoidance

CONTENTS

2020 Census Operational Overview. .............................................. 7-1

2020 Census Operational Plan ................................................. 7-1

2020 Census Detailed Operational Plans . . . .................................... 7-2

Confidentiality of the Data. ...................................................... 7-2

Title 13 U.S. Code ............................................................ 7-2

Disclosure Avoidance . . . ..................................................... 7-2

Differential Privacy . .......................................................... 7-2

The TopDown Algorithm . . . . ................................................. 7-3

Invariants and the Privacy-Loss Budget ........................................ 7-3

2020 CENSUS OPERATIONAL OVERVIEW

The 2020 Census operational design comprised a set of design decisions that drove how the 

2020 Census was conducted. These design decisions were informed through research, testing, and analysis conducted from 2012 through 2018. The operational design also drove the 

requirements for information technology capabilities and acquisitions required to conduct the 

census. The 2020 Census was designed and developed in an iterative fashion, incorporating 

results from the various tests conducted leading up to the 2020 Census. Most of the design 

decisions implemented in the 2020 Census were captured in the 2020 Census Operational Plan 

v4.0, issued in December 2018.

Due to the COVID-19 outbreak, the U.S. Census Bureau adjusted 2020 Census operation 

production dates in order to protect the health and safety of the American public and 

Census Bureau employees, implement guidance from federal, state, and local authorities, 

and ensure a complete and accurate count of all communities. Additional information about 

2020 Census operational adjustments due to COVID-19 can be found on the 2020 Census 

Internet site at <https://2020census.gov/en/news-events/press-releases/statement 

-covid-19-2020.html>. 

2020 Census Operational Plan

The Census Bureau’s 2020 Census Operational Plan (Op Plan) documents the design for 

conducting the 2020 Census. The Op Plan covers all operations required to execute the 

2020 Census, starting with precensus address and geographic feature updates, and ending once census data products are disseminated and coverage and quality are measured. 

The Op Plan reflects and supports evidence-based decision-making by describing design 

concepts and their rationale, identifying decisions made at the time of publication, and 

describing significant issues and risks related to the implementation of the 2020 Census 

operation.

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The Op Plan provides an overview of the 2020 Census and the 35 required operations, program key innovations, program tests, milestones, production dates, program-level risks, and 

data quality analysis to include operation descriptions, timelines, scope, recommendations 

(based on 2010 lessons learned), research conducted, decisions made, issues, risks, costs, and 

milestones. Additional information about the 2020 Census Operational Plan v4.0 is available 

on the Census Bureau Internet site <www.census.gov/programs-surveys/decennial-census 

/2020-census/planning-management/planning-docs/operational-plan.html>.

2020 Census Detailed Operational Plans

Detailed Operational Plans (DOPs) were developed for each of the 35 operations and complete

the Op Plan. The DOPs were intended for use by Census Bureau managers, staff, contractors, 

and other internal and external stakeholders working on the 2020 Census. The DOPs present 

the detailed operational designs and include summaries of the operational processes involved, 

operational inputs, outputs, and controls, and the basic mechanisms employed to conduct 

the operational work. Brief descriptions of the 35 operations are provided in Table C-1 in 

Appendix C. Data Collection and Processing Procedures. More specific information on each 

operation can be found on the Census Bureau Internet site <www.census.gov/programs 

-surveys/decennial-census/2020-census/planning-management/op-plans.html>.

CONFIDENTIALITY OF THE DATA

The Census Bureau has modified some data in this data release to protect confidentiality. Title 

13 U.S. Code, Section 9 prohibits the Census Bureau from publishing results in which an individual’s data can be identified.

Title 13 U.S. Code

Title 13 of the U.S. Code authorizes the Census Bureau to conduct surveys and censuses and 

mandates that any information obtained from private individuals and establishments remains 

confidential. Section 9 of Title 13 prohibits the Census Bureau from releasing “any publication whereby the data furnished by any particular establishment or individual under this title 

can be identified.” Section 214 of Title 13, as modified by the Federal Sentencing Reform Act, 

imposes a fine of not more than $250,000 and/or imprisonment of not more than 5 years for 

publication or communication in violation of Section 9.

Disclosure Avoidance

Disclosure avoidance is the process of disguising data to protect confidentiality. A disclosure 

of data occurs when someone can use published statistical information to identify an individual who provided information under a pledge of confidentiality. Using disclosure avoidance, 

the Census Bureau modifies or removes all of the characteristics that put confidential information at risk for disclosure. Although it may appear that a table shows information about a 

specific individual, the Census Bureau has implemented a disclosure avoidance system based 

on differential privacy to disguise the original data while making sure the results are useful.

Differential Privacy

Formally private disclosure avoidance methods, like differential privacy, are similar to a broad 

class of traditional disclosure avoidance methods that protect privacy through the introduction of statistical noise into the data. This noise introduces uncertainty to reduce the likelihood that a specific individual can be identified and to reduce the likelihood that sensitive 

attributes about that individual can be inferred. Differential privacy differs from traditional 

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noise-injection privacy methods insofar as the amount of noise required to protect privacy 

is precisely calibrated to provide provable mathematical guarantees regarding the maximum amount of privacy-loss possible from the publication of data products derived from the 

confidential data. This guarantee is independent of the tools and external information that a 

would-be attacker (present or future) could use to attempt to reidentify individuals or to infer 

sensitive attributes about them. This maximum bound to the privacy-loss is reflected in the 

privacy-loss budget for the data products and represents a mathematically rigorous, futureproof privacy guarantee to our respondents.

The TopDown Algorithm

The Disclosure Avoidance System (DAS) used to protect the Public Law 94-171 data works as 

follows:

1. After the confidential Census Edited File is input into the DAS, the system’s TopDown

Algorithm takes an extensive series of differentially private “noisy” measurements.

2. The algorithm uses these measurements to generate privacy-protected microdata

records for the entire nation.

3. These individual records contain every level of geography on the Census Bureau’s geographic backbone based on the noisy measurements taken at each of those geographic

levels and subject to the population invariants and other constraints (discussed below).

4. These microdata records are exported into the tabulation system to generate the data

products for this publication.

5. The resulting data reflect the privacy guarantees established by the global privacy-loss

budget for the 2020 Census, incorporating the greatest level of uncertainty at the census

block level (where privacy risk is usually greatest), while providing increasingly accurate

measures of the nation’s population at each higher level of geography.

Invariants and the Privacy-Loss Budget

To meet the Census Bureau’s constitutionally mandated responsibility to apportion representatives for the House of Representatives according to the actual enumerated population, the 

DAS departs from pure differential privacy in a few ways. The total population for each state is 

held invariant—used exactly as enumerated and with no noise added. Similarly, the total number of housing units in each census block and the number and type of each group quarters 

unit in each census block are also held invariant.

The Census Bureau’s Data Stewardship Executive Policy Committee (DSEP) has not yet set 

the global privacy-loss budget for the 2020 Census. The Census Bureau will communicate 

the value of the global privacy-loss budget and its allocation across the 2020 Census Data 

Products to the data user community once those decisions have been made. View the 2020 

Census Memorandum Series at <www.census.gov/programs-surveys/decennial-census/2020 

-census/planning-management/memo-series.html>.

For more information on the Census Bureau’s modernization of its disclosure avoidance 

processes, see our 2020 Census Disclosure Avoidance page <www.census.gov/programs

-surveys/decennial-census/2020-census/planning-management/2020-census-data

-products.html>. 

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Chapter 8.

User Updates

User updates supply data users with additional or corrected decennial census information that 

becomes available after the technical documentation or files are prepared. They are issued in a 

numbered series and are available in portable document format (PDF) on the Census Internet 

site at <www.census.gov/programs-surveys/decennial-census/data/errata-notes.html>. Please 

file the user updates cover sheet behind this notice. If there are technical documentation 

replacement pages, they should be filed in their proper location and the original pages should 

be destroyed.

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Appendix A.

Geographic Terms and Concepts

CONTENTS

Alaska Native Regional Corporation (ANRC) (see American Indian, Alaska Native,

 and Native Hawaiian Area) ..................................................... A-7

Alaska Native Village (ANV) (see American Indian, Alaska Native, 

and Native Hawaiian Area) ..................................................... A-9 

Alaska Native Village Statistical Area (ANVSA) (see American Indian, Alaska Native,

 and Native Hawaiian Area) ..................................................... A-9

American Indian, Alaska Native, and Native Hawaiian Area ........................... A-7 

American Indian Off-Reservation Trust Land (see American Indian, Alaska Native,

 and Native Hawaiian Area) ..................................................... A-9

American Indian Reservation (see American Indian, Alaska Native,

 and Native Hawaiian Area) ..................................................... A-7

American Indian Tribal Subdivision (see American Indian, Alaska Native,

 and Native Hawaiian Area) ..................................................... A-8

American National Standards Institute (ANSI) Codes (see Codes for 

Geographic Entities) ........................................................... A-17

American Samoa (see Island Areas of the United States) ............................ A-25 

Area Measurement .............................................................. A-11

Barrio (see Puerto Rico) ......................................................... A-30

Barrio-Pueblo (see Puerto Rico) .................................................. A-30

Block .......................................................................... A-12

Block Group .................................................................... A-12

Borough (see County or Statistically Equivalent Entity; see County Subdivision; 

see Place) .................................................................... A-20 

Boundary Changes .............................................................. A-13

Census Area (see County or Statistically Equivalent Entity) .......................... A-20 

Census Block (see Block) ........................................................ A-12

Census Bureau Codes (see Codes for Geographic Entities) ........................... A-17

Census County Division (CCD) (see County Subdivision) ............................ A-21

Census Designated Place (CDP) (see Place) ........................................ A-28

Census Division (see also Census Region) .......................................... A-14

Census Region (see also Census Division) .......................................... A-15

Census Subarea (see County Subdivision) .......................................... A-21

Census Tract .................................................................... A-15

Centroid (see Geographic Area Attributes) ......................................... A-23

City (see Place) ................................................................. A-29

City and Borough (see County or Statistically Equivalent Entity; see Place) ............ A-20

Codes for Geographic Entities .................................................... A-16

Combined New England City and Town Area (see Core Based Statistical Area) ........ A-19

Combined Statistical Area (CSA) (see Core Based Statistical Area) ................... A-19

Commonwealth of the Northern Mariana Islands (see Island Areas of the 

United States) ................................................................ A-26

Comparability (see Boundary Changes) ............................................ A-14

Comunidad (see Puerto Rico) ..................................................... A-30

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Congressional District (CD) ....................................................... A-18

Consolidated City ............................................................... A-18

Core Based Statistical Areas ..................................................... A-18

County or Statistically Equivalent Entity and Related Statistical Areas ................. A-20

County Subdivision .............................................................. A-21

Density (see Population and Housing Unit Density) ................................. A-29

District (see County or Statistically Equivalent Entity) ............................... A-20

Division (see Census Division) .................................................... A-14

Equivalency (see Boundary Changes) ............................................. A-14

Estate (see Island Areas of the United States) ...................................... A-25

FIPS Class Codes (see Geographic Area Attributes) ................................. A-23

FIPS Codes (see Codes for Geographic Entities) .................................... A-16

Functional Status Codes (see Geographic Area Attributes) .......................... A-23

Geographic Area Attributes ...................................................... A-23

Geographic Component .......................................................... A-24 

Geographic Data (see Geospatial Data) ............................................ A-25

Geographic Hierarchy (see Geographic Presentation of Data) ........................ A-4 

Geographic Names Information System (GNIS) ..................................... A-17

Geographic Names Information System Identifier (GNIS ID) 

(see also Codes for Geographic Entities) ......................................... A-24

Geographic Presentation of Data .................................................. A-4 

Geographic Summary Level (see Summary Level) .................................. A-32

Geographic Variant .............................................................. A-25

Geospatial Data ................................................................. A-25

Guam (see Island Areas of the United States) ...................................... A-26

Hamlet (see Place) .............................................................. A-29

Hawaiian Home Land (HHL) (see American Indian, Alaska Native, 

and Native Hawaiian Area) ..................................................... A-8

Hierarchical Presentation (see Geographic Presentation of Data) ..................... A-4 

Incorporated Place (see Place; see County Subdivision) ............................. A-28

Independent City (see County or Statistically Equivalent Entity; see Place) ............ A-20

Independent Place (see County Subdivision; see Place) ............................. A-29

Internal Point (see Geographic Area Attributes) .................................... A-23

Inventory Presentation (see Geographic Presentation of Data) ....................... A-5

Island (see County or Statistically Equivalent Entity) ................................ A-20

Island Areas of the United States .................................................. A-25

Joint-Use Areas (see American Indian Area, Alaska Native Area, and Hawaiian 

Home Land) .................................................................. A-8

Land Area (see Area Measurement) ............................................... A-7

Legal/Statistical Area Description (see Geographic Area Attributes) .................. A-23

MAF/TIGER (Master Address File/Topologically Integrated Geographic Encoding 

and Referencing) Database .................................................... A-28

Metropolitan Division (see Core Based Statistical Area) .............................. A-19

Metropolitan Statistical Area (see Core Based Statistical Area) ....................... A-18

Micropolitan Statistical Area (see Core Based Statistical Area) ....................... A-19

Minor Civil Division (MCD) (see County Subdivision) ................................ A-21

Municipality (see County or Statistically Equivalent Entity; see Island Areas of the 

United States) ................................................................ A-20

Municipio (see Puerto Rico; see County or Statistically Equivalent Entity) ............. A-30

Names of Geographic Entities (see Geographic Area Attributes) ..................... A-23

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Nation (see United States) ....................................................... A-33

National Standard Codes (see Codes for Geographic Entities; see Geographic

 Names Information System [GNIS ID]) .......................................... A-17

New England City and Town Area (NECTA) (see Core Based Statistical Area) .......... A-19

New England City and Town Area Division (see Core Based Statistical Area) ........... A-19 

Northern Mariana Islands (see Island Areas of the United States) ..................... A-26

Off-Reservation Trust Land (see American Indian, Alaska Native, 

and Native Hawaiian Area) ..................................................... A-9

Oklahoma Tribal Statistical Area (OTSA) (see American Indian, Alaska Native, 

and Native Hawaiian Area) ..................................................... A-9

Oklahoma Tribal Statistical Area (OTSA) Joint-Use Area (see American Indian, 

Alaska Native and Native Hawaiian Area) ........................................ A-10

Outlying Areas (see Island Areas of the United States) .............................. A-25

Parish (see County or Statistically Equivalent Entity) ................................ A-20

Place ........................................................................... A-28

Place Within Consolidated City (see Place) ........................................ A-29

Population and Housing Unit Density .............................................. A-29

Principal City (see Core Based Statistical Area) ..................................... A-20

Public Use Microdata Area (PUMA) ................................................ A-30

Puerto Rico .................................................................... A-30

Region (see Census Region) ...................................................... A-15

Rural (see Urban and Rural) ...................................................... A-33

School District (Elementary, Secondary, and Unified) ................................ A-30

State or Statistically Equivalent Entity ............................................. A-31

State Designated Tribal Statistical Area (SDTSA) (see American Indian, 

Alaska Native, and Native Hawaiian Area) ........................................ A-10

State Legislative District (Upper and Lower Chambers) .............................. A-31

Subbarrio (see Puerto Rico) ...................................................... A-30

Subminor Civil Division (see Puerto Rico) .......................................... A-30

Summary Level .................................................................. A-32

Tabulation Block (see Block) ...................................................... A-12

Town (see County Subdivision; see Place) .......................................... A-28

Township (see County Subdivision). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-21

Tract (see Census Tract) .......................................................... A-15

Tribal Block Group ............................................................... A-32

Tribal Census Tract .............................................................. A-32

Tribal Designated Statistical Area (TDSA) (see American Indian, Alaska Native, 

and Native Hawaiian Area) ..................................................... A-10

Tribal Tract (see Tribal Census Tract) .............................................. A-32

Trust Land (see American Indian, Alaska Native, and Native Hawaiian Area) ........... A-9

United States (Nation) ........................................................... A-33

United States and Territories ...................................................... A-33

United States Territory (see State or Statistically Equivalent Entity; see United States 

and Territories) ............................................................... A-31

United States Minor Outlying Islands (see Island Areas of the United States) ........... A-25

United States Virgin Islands (see Island Areas of the United States) ................... A-27

Unorganized Territory (see County Subdivision) .................................... A-22

Urban (see Urban and Rural) ..................................................... A-33

Urban and Rural ................................................................. A-33

Urban Growth Area (UGA) ....................................................... A-34

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A-4 Geographic Terms and Concepts

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Village (see Island Areas of the United States; see Place) ............................ A-26

Vintage (see Boundary Changes) ................................................. A-14

Voting District .................................................................. A-34

Water Area (see Area Measurement) .............................................. A-11

ZIP Code (see ZIP Code Tabulation Area) .......................................... A-35

ZIP Code Tabulation Area (ZCTA) ................................................. A-35

Zona Urbana (see Puerto Rico) ................................................... A-30

INTRODUCTION

This document provides definitions of geographic terms and concepts as well as a description 

of the different methods used to present information for geographic entities in U.S. Census 

Bureau data products. This document contains definitions for all geographic area terms and 

concepts recognized by the Census Bureau and that may appear in any Census Bureau product presenting demographic and housing data (geographic terms and concepts unique to 

the Economic Census and other specialized surveys and censuses are not included in this 

document). The inclusion of a particular term or concept in this document does not imply 

that data for that geographic entity or attribute appear in each data product. For instance, 

data for tribal census tracts and tribal block groups only appear in products providing data 

according to the American Indian/Alaska Native/Native Hawaiian Area nation-based geographic hierarchy. As another example, because Urban Areas (UAs) are defined on the basis 

of decennial census population counts, data for UAs do not appear in initial decennial census 

data products. In addition, the description of both the hierarchical and inventory approaches 

to presenting data for geographic entities does not imply that both formats are used in each 

data product.

GEOGRAPHIC PRESENTATION OF DATA

In Census Bureau data products, geographic entities usually are presented in a hierarchical 

arrangement or as an inventory listing.

Hierarchical Presentation

A hierarchical geographic presentation shows the geographic entities in a superior/subordinate structure. This structure is derived from the legal, administrative, or areal relationships 

of the entities. The hierarchical structure is depicted in report tables by means of indentation. 

For computer-readable media, the hierarchy is shown in the descriptive name applied to a 

summary level, with the hierarchy in order separated by hyphens. An example of hierarchical presentation is the census geographic hierarchy consisting of census block, within block 

group, within census tract, within place, within county subdivision, within county, within state. 

Graphically, this is shown as:

State 

 County

 County subdivision 

 Place (or part)

 Census tract (or part) 

 Block group (or part)

 Block

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Figure A–1, which is a diagram of the geographic hierarchy, presents this information as a 

series of nesting relationships. For example, a line joining the lower-level entity Place and 

the higher-level entity State means that a place cannot cross a state boundary; a line linking Census Tract and County means that a census tract cannot cross a county line; and so 

forth. There is no implied hierarchy between different line tracks; for example, a census tract 

nests within a county, but it may cross a county subdivision boundary even though County 

Subdivision also nests within County.

Inventory Presentation

An inventory presentation of geographic entities is one in which all entities of the same type 

are shown in alphabetical, code, or geographic sequence, without reference to their hierarchical relationships. Generally, an inventory presentation shows totals for entities that may be 

split in a hierarchical presentation, such as place, census tract, or block group. An example of 

a series of inventory presentations is a state, followed by all the counties in that state, followed by all the places in that state. Graphically, this is shown as:

* Refer to the “Hierarchy of American Indian, Alaska Native, and Native Hawaiian Areas”

REGIONS

DIVISIONS

Counties

Census Tracts

Block Groups

STATES

NATION

Census Blocks

ZIP Code Tabulation Areas

School Districts

County Subdivisions

Subminor Civil Divisions

Congressional Districts

Voting Districts

AIANNH Areas* (American Indian, Alaska Native,

Native Hawaiian Areas)

Urban Areas

Core Based

Statistical Areas

Places

State Legislative Districts

Urban Growth Areas

Figure A-1.

Standard Hierarchy of Census Geographic Entities

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State

 County A

 County B

 County C

 Place X 

 Place Y

 Place Z

Nation-Based Hierarchies

Exceptions to the standard hierarchical presentation occur for entities that do not necessarily 

nest within states, most notably American Indian, Alaska Native, and Native Hawaiian areas, 

Urban Areas, ZIP Code tabulation areas (ZCTAs), and core based statistical areas (CBSAs).

American Indian, Alaska Native, and Native Hawaiian Area (AIANNHA) Hierarchy

Because federally recognized American Indian areas can cross state lines, a separate 

AIANNHA hierarchy exists for these areas. For instance, the following American Indian entities can cross state lines: federally recognized American Indian reservations or off-reservation 

trust lands, tribal subdivisions, tribal designated statistical areas, tribal census tracts, and 

tribal block groups. National summary data for American Indian reservations or statistical 

areas may be presented as an alphabetical listing of names followed by the state portions of 

each area. Also, a tribal census tract or tribal block group may be located in more than one 

state or county. Data for tribal census tracts and tribal block groups are presented only in 

Census Bureau products utilizing the AIANNHA hierarchy and are not present in products utilizing the standard census geographic hierarchy.

The diagram in Figure A–2 shows geographic relationships among geographic entities in the 

AIANNHA hierarchy. It does not show the geographic levels county, county subdivision, and 

place, among others, because AIANNHAs do not necessarily nest within them.

Figure A-2. 

Hierarchy of American Indian, Alaska Native, and Native Hawaiian Areas

Oklahoma Tribal 

Statistical Areas

States

Tribal Subdivisions Tribal Block 

Groups

Tribal Census 

Tracts

American Indian Areas (Federal)/

Off-Reservation Trust Lands

Alaska Native Regional Corporations/ 

Alaska Native Village Statistical Areas/

Hawaiian Home Lands

American Indian Reservations 

(state)/State Designated 

Tribal Statistical Areas

 CENSUS BLOCKS 

Tribal Designated Statistical Areas

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DEFINITIONS OF GEOGRAPHIC ENTITIES, TERMS, AND CONCEPTS

The definitions below are for geographic entities and concepts that the Census Bureau 

includes in its standard data products. Not all entities, terms, and concepts are shown in any 

one data product.

AMERICAN INDIAN, ALASKA NATIVE, AND NATIVE HAWAIIAN AREA

There are both legal and statistical American Indian, Alaska Native, and Native Hawaiian areas 

(AIANNHAs) for which the Census Bureau provides data. The legal entities consist of federally 

recognized American Indian reservations and off-reservation trust land areas, the tribal subdivisions that can divide these entities, state-recognized American Indian reservations, Alaska 

Native Regional Corporations, and Hawaiian home lands. The statistical entities are Alaska 

Native village statistical areas, Oklahoma tribal statistical areas, tribal designated statistical areas, and state designated tribal statistical areas. Statistical tribal subdivisions can exist 

within Oklahoma tribal statistical areas. In all cases, these areas are mutually exclusive in that 

no AIANNHA can overlap another tribal entity, except for tribal subdivisions, which by definition subdivide some American Indian entities, and Alaska Native village statistical areas, which 

exist within Alaska Native Regional Corporations. In cases where more than one tribe claims 

jurisdiction over an area, the Census Bureau creates a joint-use area as a separate entity to 

define this area of dual claims. The following provides more detail about each of the various 

AIANNHAs.

Legal Entities

Alaska Native Regional Corporations (ANRCs) were created pursuant to the Alaska Native 

Claims Settlement Act (ANCSA) (Pub. L. 92–203, 85 Stat. 688 [1971]; 43 U.S.C. 1602 et seq. 

[2000]), enacted in 1971 as a ‘‘Regional Corporation’’ and organized under the laws of the 

State of Alaska to conduct both the for-profit and nonprofit affairs of Alaska Natives within 

a defined region of Alaska. For the Census Bureau, ANRCs are considered legal geographic 

entities. Twelve ANRCs cover the entire State of Alaska except for the area within the Annette 

Island Reserve (a federally recognized American Indian reservation under the governmental 

authority of the Metlakatla Indian Community). The Census Bureau offers representatives of 

the 12 nonprofit ANRCs (also known as Alaska Native Regional Associations [ANRAs]) in 

Alaska the opportunity to review and update the ANRC boundaries before each decennial 

census. Each ANRC is assigned a five-digit numeric Federal Information Processing Series 

(FIPS) code and an eight-digit National Standard (NS) code.

American Indian reservations—Federal (federal AIRs) are areas that have been set aside by 

the United States for the use of tribes, the exterior boundaries of which are more particularly 

defined in the final tribal treaties, agreements, executive orders, federal statutes, secretarial 

orders, or judicial determinations. 

The Bureau of Indian Affairs (BIA) maintains a list of all federally recognized tribal governments and makes final determination of the inventory of federal AIRs. Federal reservations 

(and associated off-reservation trust lands) are territory over which American Indian tribes 

have governmental authority. American Indian reservations can be legally described as colonies, communities, Indian colonies, Indian communities, Indian rancherias, Indian reservations, 

Indian villages, pueblos, rancherias, ranches, reservations, reserves, settlements, or villages. 

The Census Bureau contacts representatives of federally recognized American Indian tribal 

governments to identify the boundaries for federal reservations through its annual Boundary 

and Annexation Survey (BAS). Federal reservations may cross state and all other area boundaries within the United States.

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Each federal AIR is assigned a four-digit census code ranging from 0001 through 4799 in 

alphabetical order of AIR names nationwide. This nation-based census code is the primary 

unique identifier for the AIR. Each federal AIR also is assigned five-digit Federal Information 

Processing Series (FIPS) codes and an eight-digit National Standard (NS) code. Because FIPS 

codes are assigned in alphabetical sequence within each state, the FIPS codes are different in 

each state for reservations that include territory in more than one state.

American Indian reservations—State (state AIRs) are reservations established by some state 

governments for tribes recognized by the state. A governor-appointed state liaison provides 

the names and boundaries for state-recognized American Indian reservations to the Census 

Bureau. State reservations must be defined within a single state, but may cross county and 

other types of boundaries. Each state AIR is assigned a four-digit census code ranging from 

9000 through 9499. Each state AIR also is assigned a five-digit Federal Information Processing 

Series (FIPS) code and an eight-digit National Standard (NS) code. To further identify and 

differentiate state-recognized American Indian areas from those that are federally recognized, 

the text “(state)” is appended to the AIR name.

American Indian tribal subdivisions, described as additions, administrative areas, areas, chapters, county districts, communities, districts, or segments, are legal administrative subdivisions of federally recognized American Indian reservations and off-reservation trust lands 

or are statistical subdivisions of Oklahoma tribal statistical areas (OTSAs). These entities are 

internal units of self-government or administration that serve social, cultural, or economic 

purposes for the American Indians on the reservations, off-reservation trust lands, or OTSAs. 

The Census Bureau obtains the boundary and name information for tribal subdivisions from 

tribal governments. Each American Indian tribal subdivision is assigned a three-digit census 

code that is alphabetically in order and unique within each American Indian area, a five-digit 

Federal Information Processing Series (FIPS) code assigned alphabetically within state, and 

an eight-digit National Standard (NS) code. Because FIPS codes are assigned in alphabetical 

sequence within each state, the FIPS codes are different in each state for tribal subdivisions 

that include territory in more than one state. Not all reservations, off-reservation trust lands, 

and OTSAs have tribal subdivisions. All summary levels that include tribal subdivisions in the 

presentation hierarchy only have records for the American Indian areas and OTSAs that actually have tribal subdivisions. 

Hawaiian home lands (HHLs) are areas held in trust for Native Hawaiians by the State of 

Hawaii, pursuant to the Hawaiian Homes Commission Act of 1920, as amended. The Census 

Bureau obtains the names and boundaries for HHLs from state officials. The names of the 

home lands are based on the traditional ahupua‘a names of the Crown and government lands 

of the Kingdom of Hawaii from which the lands were designated or from the local name for 

an area. Being lands held in trust, HHLs are treated as equivalent to off-reservation trust land 

areas with the American Indian Trust Land/Hawaiian Home Land Indicator coded as “T.” Each 

HHL is assigned a national four-digit census code ranging from 5000 through 5499 based 

on the alphabetical sequence of each HHL name, a five-digit Federal Information Processing 

Series (FIPS) code in alphabetical order within the State of Hawaii, and an eight-digit National 

Standard (NS) code.

Joint-use areas, as applied to any American Indian area by the Census Bureau, means an area 

that is administered jointly or claimed by two or more American Indian tribes. The Census 

Bureau designates legal joint-use areas as unique geographic entities equivalent to a reservation for the purpose of presenting statistical data. Each is assigned a national four-digit 

census code ranging from 4800 through 4999 based on the alphabetical sequence of each 

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joint-use area name, a five-digit Federal Information Processing Series (FIPS) code in alphabetical order within state, and an eight-digit National Standard (NS) code. No joint-use areas 

exist in multiple states.

Off-reservation trust lands are areas for which the United States holds title in trust for the 

benefit of a tribe (tribal trust land) or for an individual American Indian (individual trust 

land). Trust lands can be alienated or encumbered only by the owner with the approval of the 

Secretary of the Interior or his/her authorized representative. Trust lands may be located on 

or off a reservation; however, the Census Bureau tabulates data only for off-reservation trust 

lands, with the off-reservation trust lands always associated with a specific federally recognized reservation or tribal government. The Census Bureau also does not distinguish between 

tribal and individual trust lands. As for federally recognized reservations, the Census Bureau 

obtains the boundaries of off-reservation trust lands from American Indian tribal governments 

through its annual Boundary and Annexation Survey (BAS). The Census Bureau recognizes 

and tabulates data for reservations and off-reservation trust lands because American Indian 

tribes have governmental authority over these lands. The Census Bureau does not identify fee 

land (or land in fee simple status) or restricted fee lands as specific geographic areas.

Off-reservation trust lands are assigned a four-digit census code, a five-digit Federal 

Information Processing Series (FIPS) code, and an eight-digit National Standard (NS) code 

that is the same as that for the reservation, if any, with which they are associated. Trust lands 

associated with tribes that do not have a reservation are assigned unique codes. The census 

code is assigned by tribal name within the range 0001 through 4799, interspersed alphabetically among the reservation names. Because FIPS codes are assigned in alphabetical 

sequence within each state, the FIPS codes are different in each state for off-reservation trust 

lands that include territory in more than one state. In decennial census data tabulations, the 

American Indian Trust Land/Hawaiian home land Indicator uniquely identifies off-reservation 

trust lands, as well as reservation or statistical area only portions, Hawaiian home lands, and 

records that consist of the combination of reservation and off-reservation trust land.

Statistical Entities

Alaska Native village statistical areas (ANVSAs) represent the more densely settled portion of 

Alaska Native villages (ANVs). The ANVs constitute associations, bands, clans, communities, 

groups, tribes, or villages recognized pursuant to the Alaska Native Claims Settlement Act of 

1971 (Public Law 92-203). Because ANVs do not always have clear, legally defined boundaries or boundaries that include most of the population and housing associated with the ANV, 

the Census Bureau does not delimit ANVs. Instead, the Census Bureau presents statistical 

data for ANVSAs that represent the settled portion of ANVs. In addition, each ANVSA should 

include only an area where Alaska Natives, especially members of the defining ANV, represent 

a substantial proportion of the population during at least one season of the year. ANVSAs are 

delineated or reviewed by officials of the ANV or, if no ANV official chose to participate in the 

delineation process, officials of the Alaska Native Regional Corporation (ANRC) in which the 

ANV is located. An ANVSA may not overlap the boundary of another ANVSA or an American 

Indian reservation. Each ANVSA is alphabetically assigned a national four-digit census code 

ranging from 6000 through 7999, an alphabetically assigned state-based five-digit Federal 

Information Processing Series (FIPS) code, and an eight-digit National Standard (NS) code.

Oklahoma tribal statistical areas (OTSAs) are statistical entities identified and delineated by 

the Census Bureau in consultation with federally recognized American Indian tribes that had 

a former reservation in Oklahoma. The boundary of an OTSA is intended to be that of the 

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former reservation in Oklahoma, except where modified by agreements with neighboring 

tribes only for statistical data presentation purposes. Each OTSA is alphabetically assigned a 

national four-digit census code ranging from 5500 through 5899, an alphabetically assigned 

state-based five-digit Federal Information Processing Series (FIPS) code, and an eight-digit 

National Standard (NS) code. Tribal subdivisions are allowed within OTSAs.

Oklahoma tribal statistical area (OTSA) Joint-Use Areas, as applied to OTSAs by the Census 

Bureau, means an area that is administered jointly or claimed by two or more American Indian 

tribes that have a delineated OTSA. The Census Bureau designates statistical joint-use areas 

as unique geographic entities for the purpose of presenting statistical data. Only OTSAs have 

statistical joint-use areas. Each Oklahoma tribal joint-use area is alphabetically assigned a 

national four-digit census code ranging from 5900 through 5999, an alphabetically assigned 

state-based five-digit Federal Information Processing Series (FIPS) code, and an eight-digit 

National Standard (NS) code.

State designated tribal statistical areas (SDTSAs) are statistical entities for state-recognized 

American Indian tribes that do not have a state-recognized land base (reservation). SDTSAs 

are identified and delineated for the Census Bureau by a state liaison identified by the governor’s office in each state. SDTSAs generally encompass a compact and contiguous area that 

contains a concentration of people who identify with a state-recognized American Indian tribe 

and in which there is structured or organized tribal activity. A SDTSA may not be located in 

more than one state and it may not include area within any other American Indian, Alaska 

Native, or Native Hawaiian area. Each SDTSA is alphabetically assigned a four-digit census code ranging from 9500 through 9998, an alphabetically assigned state-based five-digit 

Federal Information Processing Series (FIPS) code, and an eight-digit National Standard (NS) 

code.

Tribal designated statistical areas (TDSAs) are statistical entities identified and delineated for 

the Census Bureau by federally recognized American Indian tribes that do not currently have 

a federally recognized land base (reservation or off-reservation trust land). A TDSA generally 

encompasses a compact and contiguous area that contains a concentration of individuals who 

identify with a federally recognized American Indian tribe and in which there is structured 

or organized tribal activity. A TDSA may be located in more than one state, but it may not 

include area within any other American Indian, Alaska Native, or Native Hawaiian area. Each 

TDSA is alphabetically assigned a four-digit census code ranging from 8000 through 8999, an 

alphabetically assigned state-based five-digit Federal Information Processing Series (FIPS) 

code, and an eight-digit National Standard (NS) code.

American Indian, Alaska Native, and Native Hawaiian Area (AIANNHA) Codes—AIANNHAs 

are represented in Census Bureau products using a national four-character numeric census 

code field and a single alphabetic character American Indian Trust Land/Hawaiian Home Land 

Indicator field. The census codes are assigned in alphabetical order in assigned ranges by 

AIANNHA type nationwide, except that joint-use areas appear at the end of the code range. 

Off-reservation trust lands are assigned the same code as the reservation with which they 

are associated. Trust lands associated with tribes that do not have a reservation are assigned 

codes based on tribal name. Federal Information Processing Series (FIPS) codes for all 

AIANNHAs range from 00001 through 89999, without differentiation among the many types 

of areas.

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The type of AIANNHA can be identified either by the census code or by the FIPS class code. 

The range of census codes allocated to each AIANNHA and the valid FIPS class code(s) associated with each are as follows:

AIANNHA type Census code 

range

Valid FIPS 

class code(s)*

Federal American Indian reservation (AIR)/off-reservation D1, D2, D3, D5, 

 trust land 0001 to 4799 D8

Joint-use federal AIR 4800 to 4999 D0

Hawaiian home land 5000 to 5499 F1

Oklahoma tribal statistical area (OTSA 5500 to 5899 D6

Joint-use OTSA 5900 to 5999 D0

Alaska Native village statistical area 6000 to 7999 E1

Tribal designated statistical area 8000 to 8999 D6

State AIR 9000 to 9499 D4

State designated tribal statistical area 9500 to 9998 D9

AIANNHA type American Indian Trust Land/

Hawaiian Home Land Indicator

AIR with associated off-reservation trust land M

AIR or statistical entity only R

Off-reservation trust land only T

Hawaiian home land T

  * Refer to the Data Dictionary for specific value descriptions.

American Indian, Alaska Native, and Native Hawaiian Area (AIANNHA) fields in the 

Geographic Header, and the values of codes within these fields, use “American Indian Area/

Alaska Native Area/Hawaiian Home Land (AIANHH)” terminology. These terms are equivalent 

to their respective AIANNHA terms. 

AREA MEASUREMENT

Area measurement data provide the size, in square units (metric and nonmetric) of geographic entities for which the Census Bureau tabulates and disseminates data. Area is calculated from the specific boundary recorded for each entity in the Census Bureau’s geospatial 

database (see “MAF/TIGER Database”). The Census Bureau provides area measurement data 

for both land area and water area. The water area figures include inland, coastal, Great Lakes, 

and territorial sea water. Inland water consists of any lake, reservoir, pond, or similar body of 

water that is recorded in the Census Bureau’s geospatial database. It also includes any river, 

creek, canal, stream, or similar feature that is recorded in that database as a two-dimensional 

feature (rather than as a single line). The portions of the oceans and related large embayments (such as Chesapeake Bay and Puget Sound), the Gulf of Mexico, and the Caribbean 

Sea that belong to the United States and its territories are classified as coastal and territorial 

waters; the Great Lakes are treated as a separate water entity. Rivers and bays that empty 

into these bodies of water are treated as inland water from the point beyond which they are 

narrower than 1 nautical mile across. Identification of land and inland, coastal, territorial, and 

Great Lakes waters is for data presentation purposes only and does not necessarily reflect 

their legal definitions.

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Land and water area measurements may disagree with the information displayed on Census 

Bureau maps and in the MAF/TIGER Database because, for area measurement purposes, 

hydrologic features identified as intermittent water, glacier, or swamp are reported as land 

area. The water area measurement reported for some geographic entities includes water that 

is not included in any lower-level geographic entity. Therefore, because water is contained 

only in a higher-level geographic entity, summing the water measurements for all the component lower-level geographic entities does not yield the water area of that higher-level entity. 

This occurs, for example, where water is associated with a county, but is not within the legal 

boundary of any county subdivision. The accuracy of any area measurement data is limited 

by the accuracy inherent in (1) the location and shape of the various boundary information in 

the MAF/TIGER Database, (2) the identification, and classification of water bodies coupled 

with the location and shapes of the shorelines of water bodies in the MAF/TIGER Database, 

and (3) rounding affecting the last digit in all operations that compute or sum the area 

measurements.

BLOCK

Blocks (Census Blocks or Tabulation Blocks) are statistical areas bounded by visible features, 

such as streets, roads, streams, and railroad tracks, and by nonvisible boundaries, such as 

selected property lines and city, township, school district, and county limits and short line-ofsight extensions of streets and roads. Generally, blocks are small in area; for example, a city 

block bounded on all sides by streets. Blocks in suburban and rural areas may be larger, more 

irregular in shape, and bounded by a variety of features, such as roads, streams, and transmission lines. In remote areas, blocks may even encompass hundreds of square miles. Blocks 

cover the entire territory of the United States, Puerto Rico, and the Island Areas. Blocks nest 

within all other tabulated census geographic entities at the time of the decennial census and 

are the basis for all tabulated data from that census.

Census Block Numbers—Blocks are numbered uniquely with a four-digit census block number from 0000 to 9999 within census tract, which nest within state and county. The first digit 

of the census block number identifies the block group. Block numbers beginning with a zero 

(in Block Group 0) are intended to include only water area, but not all water-only blocks have 

block numbers beginning with 0 (zero).

BLOCK GROUP

Block Groups (BGs) are statistical divisions of census tracts, are generally defined to contain 

between 600 and 3,000 people, and are used to present data and control block numbering. A 

block group consists of clusters of blocks within the same census tract that have the same first 

digit of their four-digit census block number. For example, blocks 3001, 3002, 3003, . . . , 3999 

in census tract 1210.02 belong to BG 3 in that census tract. Most BGs were delineated by local 

participants in the Census Bureau’s Participant Statistical Areas Program (PSAP). The Census 

Bureau delineated BGs only where a local or tribal government declined to participate in PSAP, 

and a regional organization or the State Data Center was not available to participate.

A BG usually covers a contiguous area. Each census tract contains at least one BG, and BGs 

are uniquely numbered within the census tract. Within the standard census geographic hierarchy, BGs never cross state, county, or census tract boundaries, but may cross the boundaries 

of any other geographic entity. Tribal census tracts and tribal BGs are separate and unique 

geographic areas defined within federally recognized American Indian reservations and can 

cross state and county boundaries (see “Tribal Census Tract” and “Tribal Block Group”). The 

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tribal census tracts and tribal block groups may be completely different from the standard 

county-based census tracts and block groups defined for the same area.

Block Group (BG) Codes—BGs have a valid code range of 0 through 9. BGs beginning with a 

zero only contain water area and are generally in coastal and Great Lakes water and territorial 

seas, but also in larger inland water bodies. For the 2020 Census, a BG 0 for the water portion can be delineated in any census tract and not just those census tracts also defined to only 

include water area. To differentiate between county-based BGs and tribal BGs, the codes for 

tribal BGs include an alphabetic character (see “Tribal Block Group”).

BOUNDARY CHANGES

Many of the legal and statistical entities for which the Census Bureau tabulates decennial data 

have had boundary changes, particularly between decennial censuses; specifically, between 

January 1, 2010, and January 1, 2020. Boundary changes to geographic entities result from:

• Annexations to or deannexations from legally established governmental units.

• Mergers or consolidations of two or more governmental units.

• Establishment of new governmental units.

• Disincorporations or disorganizations of existing governmental units.

• Changes in treaties or executive orders and governmental action placing additional lands in 

trust.

• Decisions by federal, state, and local courts.

• Redistricting for congressional districts and state legislative districts.

• Ancillary changes to legal or statistical areas as a result of annexations and deannexations; 

for example, reduction of territory for a census designated place as the result of an annexation by an adjacent incorporated place.

• Changes to correct errors or more accurately place boundaries relative to visible features.

• Changes to statistical areas as the result of concept or criteria changes.

All legal boundaries used for the 2020 Census are those reported to the Census Bureau to 

be in effect as of January 1, 2020. The statistical area boundaries also reflect a January 1, 

2020, date for delineation. The legal boundaries are collected through various surveys and 

programs: the Boundary and Annexation Survey, Redistricting Data Program, and the School 

District Review Program. Legal boundaries in the Island Areas are reported by a liaison 

appointed by the governor of each Island Area. 

Statistical entity boundaries generally are reviewed by local, state, or tribal governments and 

can have changes to adjust boundaries to existing features to better define the geographic 

area each encompasses or to account for shifts and changes in the population distribution 

within an area. Where statistical areas have a relationship to legal area boundaries, complementary updates occur; for example, removing territory from a census designated place if 

annexed to an incorporated place, or removing territory from a tribal designated statistical 

area if the area is added to an American Indian reservation.

The historical counts shown for states, counties, county subdivisions, places, American Indian, 

Alaska Native, and Native Hawaiian areas, and other areas are not updated for boundary 

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changes, and thus reflect the population and housing units in each entity as delineated at the 

time of each decennial census or survey. Statistical data released by the Census Bureau are 

intended to be used in conjunction with the geospatial data of the same “Geographic Vintage” 

released by the Census Bureau, i.e., geospatial data released at the same time and used to 

tabulate the statistical data presented. The Census Bureau regularly rereleases geospatial 

data of a given geographic vintage for purposes of geographic comparability, for example, 

the 2010 Census vintage will be rereleased as part of each annual release of TIGER/Line 

Shapefiles through at least 2030. Due to the topologic nature of the MAF/TIGER Database 

and the fact that this can reshape geographic areas as time passes, data users need to be 

aware that the 2020 Census geospatial data released with the 2020 Census statistical data are 

the official data that should be used in the comparison of data. 

The ideas of “Geographic Equivalency” and “Geographic Comparability” have always been 

important to data users, but technology now allows many data users to try and compare data 

not just in the same geographic vintage, i.e., geographic equivalency, but also across time, 

i.e., geographic comparability. For example, a school district is coextensive with a county in a 

product from the Census Bureau, so the statistical data from that product can be considered 

geographically equivalent. Geographic comparability on the other hand could be comparing the “same” geographic entity, but across time and thus data products. For example, an 

incorporated place that doubled in land area between the 2010 and 2020 censuses. Data users 

need to consider and decide for themselves if the statistical data, and thus the data products, 

are “comparable” or not for their specific use. 

CENSUS DIVISION

Census Divisions are groupings of states and the District of Columbia that are subdivisions of 

the four census regions (see “Census Region”). There are nine census divisions, and each is 

identified by a single-digit census code. The U.S. Territories are not part of any census region 

or census division. For a list of all census regions, census divisions, and their constituent 

states, see Figure A–3.

Figure A-3.

Census Regions, Census Divisions, and Their Constituent States

Northeast Region

New England Division:

Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut

Middle Atlantic Division:

New York, New Jersey, Pennsylvania

Midwest Region

East North Central Division:

Ohio, Indiana, Illinois, Michigan, Wisconsin

West North Central Division:

Minnesota, Iowa, Missouri, North Dakota, South Dakota, Nebraska, Kansas

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South Region

South Atlantic Division:

Delaware, Maryland, District of Columbia, Virginia, West Virginia, North Carolina, South 

Carolina, Georgia, Florida

East South Central Division:

Kentucky, Tennessee, Alabama, Mississippi

West South Central Division:

Arkansas, Louisiana, Oklahoma, Texas

West Region

Mountain Division:

Montana, Idaho, Wyoming, Colorado, New Mexico, Arizona, Utah, Nevada

Pacific Division:

Washington, Oregon, California, Alaska, Hawaii

CENSUS REGION

Census Regions are groupings of states and the District of Columbia that subdivide the 

United States for the presentation of census data. There are four census regions—Northeast, 

Midwest, South, and West. Each of the four census regions is divided into two or more census 

divisions (see “Census Division”).

Each census region is identified by a single-digit census code. The U.S. Territories are not part 

of any census region or census division. For a list of all census regions, census divisions, and 

their constituent states, see Figure A–3.

CENSUS TRACT

Census Tracts are small, relatively permanent statistical subdivisions of a county or statistically equivalent entity that can be updated by local participants prior to each decennial census as part of the Census Bureau’s Participant Statistical Areas Program (PSAP). The Census 

Bureau delineates census tracts in situations where no local participant responded or where 

state, local, or tribal governments declined to participate. The primary purpose of census 

tracts is to provide a stable set of geographic units for the presentation of statistical data.

Census tracts generally have a population size between 1,200 and 8,000 people, with an 

optimum size of 4,000 people. A census tract usually covers a contiguous area; however, the 

spatial size of census tracts varies widely depending on the density of settlement. Census 

tract boundaries are delineated with the intention of being maintained over a long time so 

that statistical comparisons can be made from census to census. Census tracts occasionally 

are split due to population growth or merged as a result of substantial population decline.

Census tract boundaries generally follow visible and identifiable features. They may follow 

nonvisible legal boundaries, such as minor civil division (MCD) or incorporated place boundaries in some states and situations, to allow for census tract-to-governmental unit relationships 

where the governmental boundaries tend to remain unchanged between censuses. State and 

county boundaries always are census tract boundaries in the standard census geographic 

hierarchy. Tribal census tracts are a unique geographic entity defined within federally recognized American Indian reservations and off-reservation trust lands and can cross state and 

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county boundaries. The tribal census tracts may be completely different from the standard 

county-based census tracts defined for the same area. (see “Tribal Census Tract”).

Census Tract Codes and Numbers—Census tracts are identified by an up to four-digit integer 

number and may have an optional two-digit suffix; for example 23 or 1457.02. The census 

tract codes consist of six digits with an implied decimal between the fourth and fifth digit 

corresponding to the basic census tract number, but with leading zeros, and trailing zeros for 

census tracts without a suffix. The tract number examples above would have codes of 002300 

and 145702, respectively.

Some ranges of census tract numbers in the 2020 Census are used to identify distinctive types 

of census tracts. The code range in the 9400s is used for those census tracts with a majority 

of population, housing, or land area associated with an American Indian area and matches the 

numbering used for the 2010 Census. The code range in the 9800s is used to specifically identify special land-use census tracts; that may have little to no housing or are defined to encompass a large area with little or no residential population with special characteristics, such as 

large parks or employment areas. The range of census tracts in the 9900s represents census 

tracts delineated specifically to cover large bodies of water. 

The Census Bureau uses suffixes to help identify census tract changes for comparison purposes. Census tract suffixes may range from .01 to .98. As part of local review of existing 

census tracts before each census, some census tracts may have grown enough in population 

size to qualify as more than one census tract. When a census tract is split, the split parts usually retain the basic number, but receive different suffixes. For example, if census tract 14 is 

split, the new tract numbers should be 14.01 and 14.02. In a few counties, local participants 

request major changes to, and renumbering of, the census tracts; however, this is generally 

discouraged. Changes to individual census tract boundaries usually do not result in census 

tract numbering changes.

CODES FOR GEOGRAPHIC ENTITIES

The Census Bureau and other federal agencies assign codes to geographic entities to facilitate the organization, presentation, and exchange of statistical data and other information. 

Geographic entity codes allow for the unambiguous identification of individual entities, generally within a specific, higher-level geographic entity (for example, county codes are assigned 

uniquely within each state). For geographic entities that have names (such as states, counties, places, county subdivisions, Urban Areas, and metropolitan and micropolitan statistical 

areas), codes generally are assigned alphabetically based on name.

Census Bureau data products contain several types of geographic entity codes: Federal 

Information Processing Series (FIPS), National Standard (NS), and Census Bureau codes.

Federal Information Processing Series (FIPS)—These are codes formerly known as Federal 

Information Processing Standards codes, until the National Institute of Standards and 

Technology (NIST) announced its decision in 2005 to remove geographic entity codes from 

its oversight. The Census Bureau continues to maintain and issue codes for geographic entities covered under FIPS oversight, albeit with a revised meaning for the FIPS acronym. 

Geographic entities covered under FIPS include states, counties, congressional districts, core 

based statistical areas, places, county subdivisions, subminor civil divisions, consolidated 

cities, estates, and all types of American Indian, Alaska Native, and Native Hawaiian areas. 

FIPS codes are assigned alphabetically according to the name of the geographic entity and 

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may change to maintain alphabetic sort when new entities are created or names change. FIPS 

codes for specific geographic entity types are usually unique within the next highest level of 

geographic entity with which a nesting relationship exists. For example, FIPS state and core 

based statistical area codes are unique within nation; FIPS county, place, county subdivision, 

subminor civil division, and congressional district codes are unique within state. The codes for 

American Indian, Alaska Native, and Native Hawaiian areas also are unique within state; those 

areas in multiple states have different codes for each state-based portion.

American National Standards Institute (ANSI)—With the removal of geographic entities from 

the Federal Information Processing Standards, the federal government sought American 

National Standards Institute (ANSI) oversight for geographic entity codes. These codes are 

referred to as “National Standard” or “NS” codes in Census Bureau products. Geographic entities covered under ANSI include states, counties, congressional districts, core based statistical 

areas and related statistical areas, places, county subdivisions, consolidated cities, subminor 

civil divisions, estates, and all types of American Indian, Alaska Native, and Native Hawaiian 

areas: specifically Alaska Native Regional Corporations, Alaska Native village statistical areas, 

American Indian reservation and off-reservation trust lands, American Indian tribal subdivisions, Hawaiian Home Lands, Oklahoma tribal statistical areas, state designated tribal statistical areas, and tribal designated statistical areas.

Relationship between Federal Information Processing Series (FIPS) and National Standard 

(NS) codes—Geographic entities for which NIST formerly provided Federal Information 

Processing Standards oversight continue to be referred to as FIPS codes in most Census 

Bureau data products, despite the federal government having sought ANSI oversight authority. These geographic entities include states, counties, congressional districts, and core based 

statistical areas and related statistical areas. The Census Bureau continues to maintain and 

issue codes for these entities following the same structure and without change to existing 

codes, except when necessary to maintain alphabetic sorting based on names of entities. The 

Census Bureau also continues to maintain and issue five-digit FIPS codes (formerly FIPS 55) 

for places, county subdivisions, consolidated cities, subminor civil divisions, and all types of 

American Indian, Alaska Native, and Native Hawaiian areas, and has not sought ANSI oversight authority for these entity codes. The U.S. Geological Survey has ANSI oversight authority for its Geographic Names Information System identifier (GNIS ID), which has been adopted 

as an NS code for states, counties, places, county subdivisions, subminor civil divisions, consolidated cities, estates, and all types of American Indian, Alaska Native, and Native Hawaiian 

areas. The Census Bureau includes the GNIS ID for these entities in most of its data products, 

identified as “National Standard codes” (NS codes) or less preferred, “ANSI codes.” While NS 

codes (GNIS IDs) are numeric, the Census Bureau portrays them as a fixed length eight-digit 

character field with leading zeros. NS codes (GNIS IDs) do not sort geographic entities in 

alphabetical order based on name or title, as is the case with FIPS codes.

Census Bureau codes—The Census Bureau assigns and issues codes for a number of geographic entities for which FIPS or NS codes are not available, and sometimes in addition to 

FIPS and NS codes. Geographic entities for which census codes are assigned and issued in 

Census Bureau data products include regions, divisions, census tracts, block groups, census 

blocks, Urban Areas, and all types of American Indian, Alaska Native, and Native Hawaiian 

areas. Some codes—voting district and state legislative district—use standards established by 

the states—or for school district codes, the U.S. Department of Education.

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CONGRESSIONAL DISTRICT

Congressional Districts are the 435 areas from which people are elected to the U.S. House of 

Representatives. After the apportionment of congressional seats among the states based on 

decennial census population counts, each state with multiple seats is responsible for establishing congressional districts for the purpose of electing representatives. Each congressional 

district is to be as equal in population to all other congressional districts in a state as practicable. For the District of Columbia, Puerto Rico, and each Island Area, a separate code is 

used to identify the entire areas of these state-equivalent entities as having a single nonvoting 

delegate.

Congressional District Codes—Congressional districts are identified by a two-character 

numeric FIPS code numbered uniquely within state. The District of Columbia, Puerto Rico, 

and the Island Areas have code 98 assigned identifying their nonvoting delegate status with 

respect to representation in Congress:

01 to 53—Congressional district codes 

00—At large (single district for state) 

98—Nonvoting delegate

ZZ—Area not assigned to any congressional district

CONSOLIDATED CITY

Consolidated City—A consolidated government is a unit of local government for which the 

functions of an incorporated place and its county or minor civil division (MCD) have merged. 

This action results in both the primary incorporated place and the county or MCD continuing 

to exist as legal entities, even though the county or MCD performs few or no governmental 

functions and has few or no elected officials. Where this occurs—and where one or more other 

incorporated places in the county or MCD continue to function as separate governments, even 

though they have been included in the consolidated government—the primary incorporated 

place is referred to as a consolidated city. The Census Bureau classifies the separately incorporated places within the consolidated city as place entities and creates a separate place (balance) record for the portion of the consolidated city not within any other place.

Consolidated City (Balance) portions refer to the areas of a consolidated city not included in 

another separately incorporated place. For example, Butte-Silver Bow, MT, is a consolidated 

city (former Butte city and Silver Bow County) that includes the separately incorporated 

municipality of Walkerville city. The area of the consolidated city that is not in Walkerville city 

is assigned to Butte-Silver Bow (balance). The name always includes the “(balance)” identifier 

(see “Place”).

CORE BASED STATISTICAL AREAS AND RELATED STATISTICAL AREAS

Core Based Statistical Areas (CBSAs) consist of the county or counties or equivalent entities associated with at least one core (Census Bureau-defined Urban Area) of at least 10,000 

population, plus adjacent counties having a high degree of social and economic integration 

with the core as measured through commuting ties with the counties associated with the 

core. The general concept of a CBSA is that of a core area containing a substantial population 

nucleus, together with adjacent communities having a high degree of economic and social 

integration with that core. The term “core based statistical area” refers collectively to metropolitan statistical areas and micropolitan statistical areas. The U.S. Office of Management and 

Budget (OMB) defines CBSAs to provide a nationally consistent, standard set of geographic 

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entities for the United States and Puerto Rico for use in tabulating and presenting statistical 

data. Statistical areas related to CBSAs include metropolitan divisions, combined statistical 

areas (CSAs), New England city and town areas (NECTAs), NECTA divisions, and combined 

NECTAs.

Combined New England City and Town Areas (Combined NECTAs) consist of two or more 

adjacent New England city and town areas (NECTAs) that have substantial employment interchange. The NECTAs that combine to create a combined NECTA retain separate identities 

within the larger combined NECTA. 

Because combined NECTAs represent groupings of NECTAs, they should not be ranked or 

compared with individual NECTAs.

Combined Statistical Areas (CSAs) consist of two or more adjacent core based statistical 

areas (CBSAs) that have substantial employment interchange. The CBSAs that combine to 

create a CSA retain separate identities within the larger CSA. Because CSAs represent groupings of metropolitan or micropolitan statistical areas, they should not be ranked or compared 

with individual metropolitan and micropolitan statistical areas.

Metropolitan Divisions are smaller groupings of counties or equivalent entities defined within 

a metropolitan statistical area containing a single core with a population of at least 2.5 million. 

Not all metropolitan statistical areas with Urban Areas of this size contain metropolitan divisions. A metropolitan division consists of one or more main/secondary counties that represent an employment center or centers, plus adjacent counties associated with the main/secondary county or counties through commuting ties. Because metropolitan divisions represent 

subdivisions of larger metropolitan statistical areas, it is not appropriate to rank or compare 

metropolitan divisions with metropolitan and micropolitan statistical areas. It would be appropriate to rank and compare metropolitan divisions.

Metropolitan Statistical Areas are core based statistical areas (CBSAs) associated with at 

least one Urban Area that has a population of at least 50,000. The metropolitan statistical 

area comprises the central county or counties or equivalent entities containing the core, plus 

adjacent outlying counties having a high degree of social and economic integration with the 

central county or counties as measured through commuting.

Micropolitan Statistical Areas are core based statistical areas (CBSAs) associated with at 

least one Urban Area that has a population of at least 10,000, but less than 50,000. The 

micropolitan statistical area comprises the central county or counties or equivalent entities 

containing the core, plus adjacent outlying counties having a high degree of social and economic integration with the central county or counties as measured through commuting.

New England City and Town Areas (NECTAs) are an alternative set of geographic entities, similar in concept to the county-based core based statistical areas (CBSAs) defined 

nationwide, that U.S. Office of Management and Budget defines in New England based on 

county subdivisions—usually cities and towns. NECTAs are defined using the same criteria 

as county-based CBSAs, and, similar to CBSAs, NECTAs are categorized as metropolitan or 

micropolitan.

New England City and Town Area (NECTA) Divisions are smaller groupings of cities and 

towns defined within a NECTA containing a single core with a population of at least 2.5 million. A NECTA division consists of a main city or town that represents an employment center, 

plus adjacent cities and towns associated with the main city or town through commuting ties. 

Each NECTA division must contain a total population of 100,000 or more. Because NECTA 

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divisions represent subdivisions of larger NECTAs, it is not appropriate to rank or compare 

NECTA divisions with NECTAs. It would be appropriate to rank and compare NECTA divisions.

Principal Cities of a core based statistical area (CBSA) or New England City and Town Area 

(NECTA) include the largest incorporated place with a population of at least 10,000 in the 

CBSA, or if no incorporated place of at least 10,000 population is present in the CBSA, the 

largest incorporated place or census designated place (CDP) in the CBSA. Principal cities 

also include any additional incorporated place or CDP with a population of at least 250,000 

or in which 100,000 or more persons work; any additional incorporated place or CDP with a 

population of at least 50,000 and in which the number of jobs meets or exceeds the number 

of employed residents; and any additional incorporated place or CDP with a population of 

at least 10,000, but less than 50,000 and at least one-third the population size of the largest 

place and in which the number of jobs meets or exceeds the number of employed residents. 

Note that there are some places designated as principal cities of NECTAs that are not principal cities of a CBSA.

Core Based Statistical Area Codes—Metropolitan statistical areas, micropolitan statistical 

areas, New England City and Town Areas (NECTAs), metropolitan divisions, and NECTA divisions are identified using a five-digit numeric code that is assigned alphabetically based on 

title and is unique within the nation. The combined statistical areas and combined NECTAs 

are identified using a three-digit numeric code, also assigned alphabetically based on title and 

unique within the nation. Codes, length, and ranges are:

CBSA entity Length Range*

Metropolitan statistical area Five digits 10000–49999

Micropolitan statistical area Five digits 10000–49999

Metropolitan division Five digits 10004–49994

New England city and town area (NECTA) Five digits 70000–79999

NECTA division Five digits 70004–79994

Combined statistical area Three digits 100–599

Combined NECTA Three digits 700–799

*

 Metropolitan divisions and NECTA divisions are distinguished from metropolitan and micropolitan statistical areas and NECTAs by 

codes that end in “4.” Metropolitan and micropolitan statistical areas and NECTAs cannot end in “4.”

COUNTY OR STATISTICALLY EQUIVALENT ENTITY

The primary legal divisions of most states are termed counties. In Louisiana, these divisions 

are known as parishes. In Alaska, which has no counties, the equivalent entities are the organized boroughs, city and boroughs, municipalities, and census areas; the latter of which 

are delineated cooperatively for statistical purposes by the State of Alaska and the Census 

Bureau. Additionally, the Census Bureau treats the following entities as equivalents of counties for purposes of data presentation: municipios in Puerto Rico, districts and islands in 

American Samoa, municipalities in the Commonwealth of the Northern Mariana Islands, and 

islands in the U.S. Virgin Islands. In four states (Maryland, Missouri, Nevada, and Virginia), 

there are one or more incorporated places that are independent of any county organization 

and, thus, constitute primary divisions of their states. These incorporated places are known 

as independent cities and are treated as equivalent entities for purposes of data presentation. 

The District of Columbia and Guam have no primary divisions, and each area is considered 

an equivalent entity for purposes of data presentation in decennial censuses. All of the counties in Connecticut and Rhode Island and nine counties in Massachusetts were dissolved as 

functioning governmental entities; however, the Census Bureau continues to present data for 

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these historical entities in order to provide comparable geographic units at the county level of 

the geographic hierarchy for these states and represents them as nonfunctioning legal entities 

in data products. Each county or statistically equivalent entity is assigned a three-character 

numeric Federal Information Processing Series (FIPS) code based on alphabetical sequence 

that is unique within state, and an eight-digit National Standard (NS) code.

COUNTY SUBDIVISION

County Subdivisions are the primary divisions of counties and equivalent entities. They 

include census county divisions, census subareas, minor civil divisions, and unorganized territories and can be classified as either legal or statistical. Each county subdivision is assigned a 

five-character numeric Federal Information Processing Series (FIPS) code based on alphabetical sequence within state, and an eight-digit National Standard (NS) code.

Legal Entities

Minor civil divisions (MCDs) are the primary governmental or administrative divisions of a 

county in many states (parishes in Louisiana), and of the county equivalents in Puerto Rico 

and the Island Areas. MCDs in the United States, Puerto Rico, and the Island Areas represent 

many different kinds of legal entities with a wide variety of governmental or administrative 

functions. MCDs include areas variously designated as barrios, barrios-pueblo, boroughs, 

charter townships, commissioner districts, election districts, election precincts, gores, grants, 

locations, magisterial districts, parish governing authority districts, plantations, purchases, 

reservations, supervisor’s districts, towns, and townships. The Census Bureau recognizes 

MCDs in 29 states, Puerto Rico, and the Island Areas. The District of Columbia has no primary 

divisions and is considered equivalent to an MCD for statistical purposes. (It is also considered 

a state equivalent and a county equivalent.) The 29 states in which MCDs are recognized are:

Arkansas Michigan Ohio

Connecticut Minnesota Pennsylvania

Illinois Mississippi Rhode Island

Indiana Missouri South Dakota

Iowa Nebraska Tennessee

Kansas New Hampshire Vermont

Louisiana New Jersey Virginia

Maine New York West Virginia

Maryland North Carolina Wisconsin

Massachusetts North Dakota

In some states, all or some incorporated places are not part of any MCD; these places are 

termed independent places. Independent places also serve as primary legal subdivisions and 

have a Federal Information Processing Series (FIPS) county subdivision code and National 

Standard (NS) code that is the same as the FIPS and NS place code. In nine states—Maine, 

Massachusetts, New Hampshire, New Jersey, North Dakota, Pennsylvania, Rhode Island, South 

Dakota, and Wisconsin—all incorporated places are independent places. In other states, incorporated places are part of, or dependent within, the MCDs in which they are located, or the 

pattern is mixed—some incorporated places are independent of MCDs and others are included 

within one or more MCDs.

The MCDs in 12 states (Connecticut, Maine, Massachusetts, Michigan, Minnesota, New 

Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and Wisconsin) also 

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serve as general-purpose local governments that can perform the same governmental functions as incorporated places. The Census Bureau presents data for these MCDs in all data 

products for which place data are provided.

In New York and Maine, American Indian reservations (AIRs) generally exist outside the jurisdiction of any town (MCD) and, thus, also serve as the equivalent of MCDs for purposes of 

data presentation.

In states with MCDs, the Census Bureau assigns a default FIPS county subdivision code of 

00000 and NS code of eight zeros in some coastal, territorial sea, and Great Lakes water 

where county subdivisions do not legally extend into the Great Lakes or out to the state/territorial limit.

Statistical Entities

Census county divisions (CCDs) are areas delineated by the Census Bureau in cooperation 

with state, tribal, and local officials for statistical purposes. CCDs have no legal function and 

are not governmental units. CCD boundaries usually follow visible features and usually coincide with census tract boundaries. The name of each CCD is based on a place, county, or wellknown local name that identifies its location. CCDs exist where:

• There are no legally established MCDs.

• The legally established MCDs do not have governmental or administrative purposes.

• The boundaries of the MCDs change frequently.

• The MCDs are not generally known to the public. 

CCDs exist within the following 20 states:

Alabama Hawaii Oregon

Arizona Idaho South Carolina

California Kentucky Texas

Colorado Montana Utah

Delaware Nevada Washington

Florida New Mexico Wyoming

Georgia Oklahoma

Census subareas are statistical subdivisions of boroughs, city and boroughs, municipalities, 

and census areas, all of which are statistical equivalent entities for counties in Alaska. The 

State of Alaska and the Census Bureau cooperatively delineate the census subareas to serve 

as the statistical equivalents of MCDs.

Unorganized territories (UTs) are defined by the Census Bureau in nine MCD states where 

portions of counties or equivalent entities are not included in any legally established MCD or 

incorporated place. The Census Bureau recognizes such separate pieces of territory as one or 

more separate county subdivisions for census purposes. It assigns each unorganized territory 

a descriptive name, followed by the designation “UT” and a county subdivision FIPS and NS 

code. The following states have unorganized territories:

Arkansas Maine North Carolina

Indiana Minnesota North Dakota

Iowa New York South Dakota

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GEOGRAPHIC AREA ATTRIBUTES

The Census Bureau collects and maintains information describing selected attributes and 

characteristics of geographic areas. These attributes are Federal Information Processing 

Series (FIPS) class code, functional status, legal/statistical area description, internal point, 

and name of geographic entities.

FIPS class codes describe the general characteristics of a geographic area related to its legal 

or statistical status, governmental status, and in some cases relationship to other geographic 

entities. Class codes exist for counties; county subdivisions; subminor civil divisions; estates; 

places; consolidated cities; and all types of American Indian, Alaska Native, and Native 

Hawaiian areas.

Functional status codes describes whether a geographic entity is a functioning governmental 

unit, has an inactive government, is an administrative area without a functioning government, 

or is a statistical area identified and defined solely for tabulation and presentation of statistical data. Functional status codes are:

A Active government providing primary general-purpose functions.

B Active government that is partially consolidated with another government, but with 

separate officials providing primary general-purpose functions.

C Active government consolidated with another government with a single set of officials. 

E Active government providing special-purpose functions.

F Fictitious entity created to fill the Census Bureau’s geographic hierarchy.

G Active government that is subordinate to another unit of government and thus, not considered a functioning government.

I Inactive governmental unit that has the power to provide primary special-purpose 

functions. 

N Nonfunctioning legal entity.

S Statistical entity.

Internal point—The Census Bureau calculates an internal point (latitude and longitude coordinates) for each geographic area. For many geographic areas, the internal point is the centroid, the geographic center of the entity. For some irregularly shaped areas (such as those 

shaped like a crescent), the centroid may be located outside the boundaries of the entity. In 

such instances, the internal point is identified as a point inside the entity boundaries nearest 

to the centroid and, if possible, a point that is on land area, not water.

Legal/statistical area description (LSAD)—The LSAD describes the particular typology 

for each geographic entity; that is, whether the entity is a borough, city, county, town, or 

township, among others. For legal entities, the LSAD reflects the term that appears in legal 

documentation pertaining to the entity, such as a treaty, charter, legislation, resolution, or 

ordinance. For statistical entities, the LSAD is the term assigned by the Census Bureau or 

other agency defining the entity. The LSAD code is a two-character field that corresponds to 

a description of the legal or statistical type of entity and identifies whether the LSAD term 

should be capitalized and should precede or follow the name of the geographic entity. Note 

that the same LSAD code is assigned to entities at different levels of the geographic hierarchy 

when they share the same LSAD. For example, the Census Bureau assigns the same LSAD 

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code (“21”) to boroughs in New York and Connecticut, although they are county subdivisions 

in the former and incorporated places in the latter.

Name—Each geographic entity included in Census Bureau products has a name. For most 

geographic entities, the name is derived from the official legally recognized name, is assigned 

by local officials participating in Census Bureau statistical area programs, or is based on component entities and determined according to specified criteria. For legal entities, the name 

appearing in Census Bureau products may be the more commonly used name rather than the 

name as it appears in legal documents. For example, “Virginia” instead of “the Commonwealth 

of Virginia,” “Baltimore” instead of “City of Baltimore.” In some instances, the name for an 

entity in Census Bureau products reflects the official name as well as a more commonly used 

name listed parenthetically; i.e., San Buenaventura (Ventura), CA, or Bath (Berkeley Springs), 

WV. For some types of geographic entities, the name reflected in Census Bureau products 

may be the geographic entity code assigned by local officials. For example, a census tract’s 

name is the actual number assigned by local officials, such as 1.01, whereas the census tract 

code would reflect a full four-digit base code and two-digit suffix (for example, for the preceding tract named 1.01, 000101).

GEOGRAPHIC COMPONENT

A geographic component is a subset of a given type of geographic entity based on a certain 

geographic or population characteristic.

GEOGRAPHIC NAMES INFORMATION SYSTEM

The Geographic Names Information System (GNIS) is the federal standard for geographic 

nomenclature. The U.S. Geological Survey (USGS) developed the GNIS for the U.S. Board on 

Geographic Names as the official repository of domestic geographic names data; the official 

vehicle for geographic names used by all departments of the federal government; and the 

source for applying geographic names to federal electronic and printed products. The GNIS 

contains information about physical and cultural geographic features of all types in the United 

States and its territories, current and historical, but not including roads and highways. The 

database holds the federally recognized name of each feature and defines the feature location by state, county, USGS topographic map, and geographic coordinates. Other attributes 

include names or spellings other than the official name, feature designations, feature classification, historical and descriptive information, and, for some categories, the geometric 

boundaries.

GEOGRAPHIC NAMES INFORMATION SYSTEM IDENTIFIER

The Geographic Names Information System Identifier (GNIS ID) is a variable length, permanent, numeric identifier of up to eight digits in length that identifies each entity uniquely 

within the nation. The GNIS is the American National Standards Institute (ANSI) National 

Standard (NS) code for several entity types. Because each entity’s GNIS ID is permanent, it 

should not change if the entity changes its name or if creation of a new entity changes the 

alphabetic sort. (Federal Information Processing Series codes are assigned based on the 

alphabetic sorting of entity names within a state and occasionally require changing codes to 

maintain the alphabetic sort.) The GNIS IDs are assigned sequentially and stored in a right-justified, variable-length, numeric field without leading zeros. The GNIS contains more than 2.6 

million sequential records, thus no GNIS ID currently exceeds seven digits. The Census Bureau 

portrays the GNIS ID in its data products as a fixed-width eight-character field with leading 

zeros.

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GEOGRAPHIC VARIANT

A geographic variant is a version of a geographic entity based on the date that the entity’s 

boundaries are intended to represent. Geographic variants only apply to specific types of 

geographic entities that need to be added or replaced by a more recent version, for example, 

congressional districts when a state redraws its congressional district boundaries. 

GEOSPATIAL DATA 

Geospatial data are those data and products that are clearly geographic in nature, rather 

than primarily statistical, especially maps and spatial data for use by Geographic Information 

Systems software and services, for example, TIGER/Line Shapefiles. The Census Bureau creates, maintains, and provides geospatial data, specifically in the MAF/TIGER Database, to 

give statistical data added value and utility as a frame of reference for data users.

ISLAND AREAS OF THE UNITED STATES

The Island Areas of the United States are the U.S. Territories of American Samoa, Guam, the 

Commonwealth of the Northern Mariana Islands (Northern Mariana Islands), and the United 

States Virgin Islands.

The Census Bureau treats the Island Areas as entities that are statistically equivalent to states 

for data presentation purposes; data for the Island Areas, however, are presented separately 

from data for the United States and Puerto Rico. Geographic definitions specific to the Island 

Areas are shown in the appropriate publications and documentation that accompany the 

data products for the Island Areas. Sometimes the Island Areas are referred to as “Island 

Territories” or “Insular Areas.” 

Separate from the Island Areas is the term “United States Minor Outlying Islands.” The U.S. Minor 

Outlying Islands refers to certain small islands that are U.S. Territories under U.S. jurisdiction in 

the Caribbean Sea and Pacific Ocean: Baker Island, Howland Island, Jarvis Island, Johnston Atoll, 

Kingman Reef, Midway Islands, Navassa Island, Palmyra Atoll, and Wake Island. These areas usually are not part of standard data products, because they generally do not include population 

year-round.

American Samoa

The Census Bureau treats American Samoa as the statistical equivalent of a state for data 

presentation purposes. 

Districts and Islands (county equivalents)—The primary legal subdivisions of American Samoa 

are districts and islands. For data presentation purposes, the Census Bureau treats districts 

and islands as the equivalent of counties in the United States. American Samoa contains three 

districts (Eastern, Western, and Manu’a) and two islands that are not within districts (Swains 

and Rose).

Eastern District includes the eastern half of Tutuila Island, Aunuu (Aunu’u) Island, Nuusetoga 

Island, Pola Island, Avagatatau Rock, Fatutoaga Rock, Tauga Rock, Manofa Rock, and 

Nuuosina Rock.

Western District includes the western half of Tutuila Island, Taputapu Island, Toatai Rock, 

Niuolepava Rock, Utumatuu Rock, Liuvaatoga Rock, Luania Rocks, Manuelo Rock, and 

Nuutavana Rock.

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Manu’a District includes Ofu Island, Nuutele Island, Nuusilaelae Island, Nuupule Rock, Olosega 

Island, and Ta’ū (Ta’u or Tau) Island.

“Rose Island” also includes Sand Island.

Counties (county subdivisions)—The Census Bureau recognizes counties as the legal subdivisions of the districts and islands in American Samoa. These entities are minor civil divisions 

(MCDs). Counties and two unnamed county subdivisions, one each covering Swains Island 

and Rose Island, cover the entire area of American Samoa.

Villages (places)—The Census Bureau treats villages in American Samoa as incorporated 

places. Village boundaries are determined by land usership and land ownership rather than 

by fixed legal descriptions. Villages cover the entire area of American Samoa except for Rose 

Island.

Commonwealth of the Northern Mariana Islands

The Census Bureau treats the Commonwealth of the Northern Mariana Islands (CNMI) as the 

statistical equivalent of a state for data presentation purposes.

Municipalities (county equivalents)—The primary legal subdivisions of the CNMI are municipalities. For data presentation purposes, the Census Bureau treats municipalities as the equivalent of counties in the United States. The CNMI contains four municipalities: Northern Islands, 

Rota, Saipan, and Tinian.

Rota Municipality includes Rota Island and Angyuta Island.

Saipan Municipality includes Saipan Island, Isleta Managaha, Isleta Maigo Luao (Forbidden 

Island), and Isleta Maigo Fahang (Bird Island).

Tinian Municipality includes Tinian Island, Aguijan Island, and Naftan Rock.

Northern Islands Municipality includes Farallon de Medinilla, Anatahan Island, Sarigan Island, 

Guguan Island, Alamagan Island, Pagan Island, Hira Rock, Togari Rock, Agrihan Island, 

Asuncion Island, Maug Islands (East Island (Higashi), North Island (Kita), and West Island 

(Nishi)), and Farallon de Pajaros (Uracus Island).

Election Districts (county subdivisions)—The Census Bureau recognizes election districts as 

the legal subdivisions of the municipalities in the CNMI. These entities are minor civil divisions 

(MCDs). Election districts cover the land area of the CNMI, and four other county subdivisions 

(one for each municipality) are coded 00000 and cover the territorial water area of the CNMI 

where no legal MCDs exist.

Villages (places)—The Census Bureau treats villages in the CNMI as incorporated places for 

the 2020 Census. The villages reflect boundaries and names provided by the CNMI Central 

Statistics Division and used in their own surveys and products. 

Guam

The Census Bureau treats Guam as the statistical equivalent of a state for data presentation 

purposes. The entire area of Guam also serves as a single county equivalent for decennial census data presentation purposes.

Guam also includes Cocos Island, Babe Island, Tangon Rock, Fofos Island, Asgadao Island, 

Agrigan Island, Guijen Rock, Asgon Rock, Alupat Island, Camel Rock, Cabras Island, Dry Dock 

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Island, Orote Island, Neye Island, Pelagi Islets, Alutom Island, Yona Island, Bangi Island, Anae 

Island, Facpi Island, and Lalas Rock.

Municipalities (county subdivisions)—The Census Bureau recognizes municipalities as the legal 

subdivisions of Guam. These entities are minor civil divisions (MCDs). Municipalities cover the 

entire land area of Guam. There is one county subdivision coded 00000 that covers the territorial water area of Guam where no legal MCDs exist.

Census Designated Places (CDPs) (places)—The Census Bureau treats traditional villages and 

other types of locally recognized communities in Guam as CDPs. CDPs do not cover the entire 

land area of Guam.

U.S. Virgin Islands

The Census Bureau treats the U.S. Virgin Islands (USVI) as the statistical equivalent of a state 

for data presentation purposes.

Islands (county equivalents)—The primary legal subdivisions of the USVI are islands. For data 

presentation purposes, the Census Bureau treats islands as the equivalent of counties in the 

United States. The USVI contains three islands: St. Croix, St. John, and St. Thomas.

St. Croix Island also includes Protestant Cay, Green Cay, Buck Island, Ruth Island, and 

Whitehorse Rock.

St. John Island also includes Grass Cay, Mingo Cay, Lovango Cay, Congo Cay, Carval Rock, 

Blunder Rocks, Murder Rock, Durloe Cays (Henley Cay, Ramgoat Cay, and Rata Cay), 

Hawksnest Rock, Perkins Cay, Trunk Cay, Cinnamon Cay, Whistling Cay, Waterlemon Cay, 

Flanagan Island, Pelican Rock, Blinders Rock, Leduck Island, Booby Rock, Cocoloba Cay, 

Mingo Rock, Skipper Jacob Rock, Steven Cay, and Two Brothers.

St. Thomas Island also includes Water Island, Hassel Island, Elephant Rock, Limestone 

Rock, Sprat Rock, Flamingo Rock, Porpoise Rocks, Flat Cays (Flat Cay and Little Flat Cay), 

Turtledove Cay, Saba Island, Dry Rock, Sail Rock, Saltwater Money Rock, Mermaids Chair, 

Kalkun Cay, Chacha Rocks, Savana Island, Domkirk Rock, Tip Rock, Drum Rock, West Cay, 

Salt Cay, Dutchcap Cay, Gorret Rock, Cockroach Island, Sula Cay, Cricket Rock, Lizard Rocks, 

Brass Islands (Inner Brass Island, Outer Brass Island, and Grasklip Point Island), Hans Lollik 

Island, Hans Lollik Rock, Little Hans Lollik Island, Pelican Cay, Steep Rock, Thatch Cay, Lee 

Rock, Turtleback Rock, Shark Island, Great Saint James Island, Current Rocks, Welk Rocks, 

Little Saint James Island, Dog Island, Dog Rocks, Fish Cay, The Stragglers, Calf Rock, Cow 

Rock, Coculus Rock, Grassy Cay, Rotto Cay, Bovoni Cay, Patricia Cay, Frenchcap Cay, Capella 

Islands (Buck Island, Broken Island, and Kid Rock), Green Cay, and Triangle Island.

Census Subdistricts (county subdivisions)—The Census Bureau recognizes census subdistricts 

as the legal subdivisions of the islands in the USVI. These entities are minor civil divisions 

(MCDs). Census subdistricts cover the entire land area of the USVI. There are three county 

subdivisions (one for each island) coded 00000 that cover the territorial water area of the 

USVI where no legal MCDs exist.

Estates—The Census Bureau recognizes estates as another type of legal subdivision in the 

USVI. The estates reflect boundaries provided by the USVI Office of Lieutenant Governor. 

The boundaries of the estates are primarily those of the former agricultural plantations that 

existed at the time Denmark transferred the islands to the United States in 1917. Estates nest 

within islands, but do not always nest within the census subdistricts in the USVI. Estates also 

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overlap with the places in the USVI. Estates cover most, but not all, of the land area of the 

USVI.

Towns and Census Designated Places (places)—The Census Bureau treats towns in the USVI as 

incorporated places and treats other types of locally recognized communities without legally 

defined boundaries in the USVI as census designated places (CDPs). For the 2020 Census, 

three towns (Charlotte Amalie, Christiansted, and Frederiksted) and several CDPs exist in the 

USVI, but do not cover the entire land area.

MAF/TIGER DATABASE

MAF/TIGER is an acronym for the Master Address File/Topologically Integrated Geographic 

Encoding and Referencing System or Database. It is a digital (computer-readable), geospatial 

database that automates the mapping and related geographic activities required to support 

the Census Bureau’s census and survey programs. The Census Bureau developed the TIGER® 

System to automate the geospatial support processes needed to meet the major geographic 

needs of the 1990 Census: producing cartographic products to support data collection and 

map presentations, providing geographic structure for tabulation and dissemination of the 

collected statistical data, assigning residential and employer addresses to the correct geographic location and relating those locations to the geographic entities used for data tabulation, and so forth. During the 1990s, the Census Bureau developed an independent Master 

Address File (MAF) to support field operations and allocation of housing units for tabulations. After the 2000 Census, both the address-based MAF and geospatial TIGER® databases 

merged to form MAF/TIGER. The content of the MAF/TIGER Database is undergoing continuous updates and is made available to the public through a variety of TIGER/Line® shapefiles 

and other geospatial data products.

PLACE

Incorporated Places are those reported to the Census Bureau as legally in existence as of 

January 1, 2020, as reported in the latest Boundary and Annexation Survey (BAS), under the 

laws of their respective states. An incorporated place is established to provide governmental functions for a concentration of people as opposed to a minor civil division (MCD), which 

generally is created to provide services or administer an area without regard, necessarily, to 

population. Places always are within a single state or equivalent entity, but may extend across 

county and county subdivision boundaries. An incorporated place usually is a city, town, village, or borough, but can have other legal descriptions. For Census Bureau data tabulation 

and presentation purposes, incorporated places exclude:

• Boroughs in Alaska (treated as statistical equivalents of counties).

• Towns in the New England states, New York, and Wisconsin (treated as MCDs).

• Boroughs in New York (treated as MCDs).

Census Designated Places (CDPs) are the statistical counterparts of incorporated places, and 

are delineated to provide data for settled concentrations of population that are identifiable by 

name, but are not legally incorporated under the laws of the state in which they are located. 

The boundaries usually are defined in cooperation with local or tribal officials and generally 

updated prior to each decennial census. These boundaries, which usually coincide with visible 

features or the boundary of an adjacent incorporated place or another legal entity boundary, 

have no legal status, nor do these places have officials elected to serve traditional municipal 

functions. CDP boundaries may change from one decennial census to the next with changes 

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in the settlement pattern; a CDP with the same name as in an earlier census does not necessarily have the same boundary. CDPs must be contained within a single state and may not 

extend into an incorporated place. There are no population size requirements for CDPs, but 

they must include some residential population or housing.

Hawaii, Puerto Rico, and Guam are the only states or state-equivalent entities that have no 

incorporated places recognized by the Census Bureau. All places shown in decennial census 

data products for Hawaii, Puerto Rico, and Guam are CDPs. By agreement with the State of 

Hawaii, the Census Bureau does not show data separately for the city of Honolulu, which is 

coextensive with Honolulu County. In Puerto Rico, CDPs are described as comunidades or 

zonas urbanas. Hamlets, primarily in the State of New York, are usually represented as CDPs in 

Census Bureau products. 

Place Codes are of two types. The five-digit Federal Information Processing Series (FIPS) 

place code is assigned based on alphabetical sequence within a state. If place names are 

duplicated within a state and they represent distinctly different areas, a separate code is 

assigned to each place name alphabetically by the primary county in which each place is 

located, or if both places are in the same county, they are assigned alphabetically by their 

legal descriptions (for example, “city” before “village”). Places also are assigned an eight-digit 

National Standard (NS) code.

Dependent and Independent Places refer to the relationship of places to the county subdivisions. Depending on the state, incorporated places are either dependent within, or independent of, county subdivisions, or there is a mixture of dependent and independent places in 

the state and in a county. Dependent places are part of the county subdivision; the county 

subdivision code of the place is the same as that of the underlying county subdivision(s), but 

is different from the place code. Independent places are not part of any minor civil division 

(MCD) and serve as primary county subdivisions. The independent place Federal Information 

Processing Series (FIPS) code usually is the same as that used for the MCD for that place. The 

only exception is if the place is independent of the MCDs in a state (Iowa, Louisiana, Maryland, 

Nebraska, North Carolina, and Virginia) in which the FIPS MCD codes are in the 90000 range. 

Then, the FIPS MCD and FIPS place codes do differ. Census designated places (CDPs) always 

are dependent within county subdivisions and all places are dependent within statistical 

county subdivisions.

Consolidated City (Balance) Portions refer to the areas of a consolidated city not included in 

another separately incorporated place. For example, Butte-Silver Bow, MT, is a consolidated 

city (former Butte city and Silver Bow County) that includes the separately incorporated 

municipality of Walkerville city. The area of the consolidated city that is not in Walkerville 

city is assigned to Butte-Silver Bow (balance). The name of the area of a consolidated city 

not specifically within a separately incorporated place always includes the “(balance)” identifier. Balance portions of consolidated cities are included with other places in Census Bureau 

products.

POPULATION AND HOUSING UNIT DENSITY

Population and housing unit density are computed by dividing the total population or number 

of housing units within a geographic entity by the land area of that entity measured in square 

miles or in square kilometers. Density is expressed as “population per square mile (kilometer)” 

or “housing units per square mile (kilometer).”

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PUBLIC USE MICRODATA AREA

Public Use Microdata Areas (PUMAs) are statistical geographic areas for the dissemination of 

decennial census and American Community Survey (ACS) Public Use Microdata Sample files 

in which the Census Bureau provides selected extracts of raw data from a small sample of 

census records that are screened to protect confidentiality. The ACS also uses the PUMAs as a 

tabulation geographic entity.

For the 2020 Census, the State Data Centers in each state, the District of Columbia, and 

Puerto Rico are involved in the delineation of the 2020 PUMAs. Counties and census tracts 

are used to define PUMAs, and each PUMA must include at least 100,000 people based on 

the 2020 Census published counts. For the 2020 Census in Guam and the U.S. Virgin Islands, 

the Census Bureau establishes a single, separate PUMA for each of these two Island Areas. 

American Samoa and the Commonwealth of the Northern Mariana Islands do not have 

PUMAs, because the total population of each is under 100,000 people.

PUERTO RICO

The Census Bureau treats the Commonwealth of Puerto Rico as the statistical equivalent of a 

state for data presentation purposes.

Municipio

The primary legal divisions of Puerto Rico are termed “municipios.” For data presentation 

purposes, the Census Bureau treats a municipio as the equivalent of a county in the United 

States.

Barrio, Barrio-Pueblo, and Subbarrio

The Census Bureau recognizes barrios and barrios-pueblo as the primary legal divisions of 

municipios. These entities are similar to the minor civil divisions (MCDs) used for reporting 

data in some states of the United States. Subbarrios, which exist in some municipios, are the 

primary legal subdivisions of the barrios-pueblo and some barrios. The Census Bureau presents the same types of statistical data for these subminor civil divisions (sub-MCDs) as it does 

for the barrios and barrios-pueblo. (There is no geographic entity in the United States equivalent to the subbarrio.)

Zona Urbana and Comunidad

There are no incorporated places in Puerto Rico; instead, the Census Bureau provides data for 

two types of census designated places (CDPs): zonas urbanas, representing the governmental 

center of each municipio, and comunidades, representing other settlements.

Some types of geographic entities do not apply in Puerto Rico. For instance, Puerto Rico is 

not in any census region or census division (see also “Congressional District”).

SCHOOL DISTRICT (ELEMENTARY, SECONDARY, AND UNIFIED)

School Districts are geographic entities within which state, county, local officials, the Bureau 

of Indian Affairs, or the U.S. Department of Defense provide public educational services 

for the area’s residents. The Census Bureau obtains the boundaries, names, local education 

agency codes, and school district levels for school districts from state and local school officials for the primary purpose of providing the U.S. Department of Education with estimates of 

the number of children “at risk” within each school district, county, and state. This information 

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serves as the basis for the Department of Education to determine the annual allocation of Title 

I funding to states and school districts.

The Census Bureau tabulates data for three types of school districts: elementary, secondary, and unified. Each school district is assigned a five-digit code that is unique within state. 

School district codes are the local education agency number assigned by the Department of 

Education and are not necessarily in alphabetical order by school district name.

The elementary school districts provide education to the lower grade/age levels and the secondary school districts provide education to the upper grade/age levels. Unified school districts provide education to children of all school ages in their service areas. In general, where 

there is a unified school district, no elementary or secondary school district exists; and where 

there is an elementary school district, the secondary school district may or may not exist.

The Census Bureau’s representation of school districts in various data products is based both 

on the grade range that a school district operates and also the grade range for which the 

school district is financially responsible. For example, a school district is defined as an elementary school district if its operational grade range is less than the full kindergarten through 12 

or prekindergarten through 12 grade range (for example, K–6 or pre-K–8). These elementary 

school districts do not provide direct educational services for grades 7–12, 9–12, or similar 

ranges. Some elementary school districts are financially responsible for the education of all 

school-aged children within their service areas and rely on other school districts to provide 

service for those grade ranges that are not operated by these elementary school districts. 

In these situations, in order to allocate all school-aged children to these school districts, the 

secondary school district code field is blank. For elementary school districts where the operational grade range and financially responsible grade range are the same, the secondary school 

district code field does contain a secondary school district code. In Census Bureau records, 

there are no situations where an elementary school district does not exist and a secondary 

school district exists.

STATE OR STATISTICALLY EQUIVALENT ENTITY

States and Equivalent Entities are the primary governmental divisions of the United States. 

In addition to the 50 states, the Census Bureau treats the District of Columbia, Puerto Rico, 

American Samoa, the Commonwealth of the Northern Mariana Islands, Guam, and the 

U.S. Virgin Islands as the statistical equivalents of states for the purpose of data presentation.

STATE LEGISLATIVE DISTRICT (UPPER AND LOWER CHAMBERS)

State Legislative Districts (SLDs) are the areas from which members are elected to state 

legislatures. The Census Bureau first reported data for SLDs as part of the 2000 Public Law 

94-171 Redistricting Data File.

Current SLDs (2018 Election Cycle)—States participating in Phase 4 of the 2020 Census 

Redistricting Data Program voluntarily provided the Census Bureau with the 2018 election cycle boundaries, codes, and, in some cases, names for their SLDs. All 50 states, plus 

the District of Columbia and Puerto Rico, participated in Phase 4’s State Legislative District 

Project (SLDP) of the 2020 Census Redistricting Data Program. States subsequently provided 

corrections to those plans through the Redistricting Data Office during Phase 2 of the 2020 

Census Redistricting Data Program, if needed.

The SLDs embody the upper (senate—SLDU) and lower (house—SLDL) chambers of the state 

legislature. Nebraska has a unicameral legislature and the District of Columbia has a single 

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council, both of which the Census Bureau treats as upper-chamber legislative areas for the 

purpose of data presentation. A unique three-character census code, identified by state participants, is assigned to each SLD within a state. In some states, state officials did not define 

the SLDs to cover all of the state or state equivalent area (usually bodies of water). In these 

areas with no SLDs defined, the code “ZZZ” has been assigned, which is treated within state 

as a single SLD for purposes of data presentation. 

SLD Names—The Census Bureau first reported state supplied names for SLDs as part of Phase 

1 of the 2010 Census Redistricting Data Program and continued that practice through the 

2020 Census Redistricting Data Program. The SLD names with their translated legal/statistical 

area description are associated only with the current SLDs. Not all states provided names for 

their SLDs, therefore the code (or number) for those states serves as the name.

SUMMARY LEVEL 

Summary levels identify the geographic level for which the statistical data in a given Census 

Bureau product have been summarized. The summary level hierarchy chart for each statistical 

data product describes the hierarchical arrangement of the specified geographic areas with 

other geographic areas in that product, if any. The summary level must be used in combination with the geographic area codes to identify a specific geographic area (for example, summary level 050 and a specific state and county code must be used together to locate the data 

for a particular county). Summary levels allow statistical data to be systematically tabulated, 

produced, and edited, thus allowing more data to be available for those defined geographic 

relationships. Additional geographic relationships exist in Census Bureau geospatial data, but 

less statistical data are available for those relationships since they are not defined as summary 

levels. 

TRIBAL BLOCK GROUP

The tribal block group concept and criteria are only applicable to legal federally recognized 

American Indian reservation and off-reservation trust land areas, and are defined independently of the standard county-based block group delineation. Tribal block groups are defined 

to provide statistically significant sample data for small areas within American Indian areas, 

particularly those American Indian areas that cross state or county boundaries where these 

boundaries are not meaningful for statistical purposes.

For federally recognized American Indian tribes with reservations or off-reservation trust land 

and a population less than 1,200, a single tribal block group is defined. Tribal participants in 

qualifying areas with a population greater than 1,200 could define additional block groups 

within their reservation or off-reservation trust land without regard to the standard block 

group configuration. Tribal block groups contain blocks beginning with the same number as 

the standard county-based block group and could contain seemingly duplicate block numbers. To better identify and differentiate tribal block groups from county-based block groups, 

tribal block groups use the letter range A through K (except “I,” which could be confused with 

a number “1”) to identify and code the tribal block group. Tribal block groups nest within 

tribal census tracts.

TRIBAL CENSUS TRACT (TRIBAL TRACT) 

The tribal census tract concept and criteria are only applicable to legal federally recognized 

American Indian reservation and off-reservation trust land areas, and are defined independently of the standard county-based census tract delineation. Tribal census tracts are defined 

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to provide statistically significant sample data for small areas within American Indian areas, 

particularly those American Indian areas that cross state or county boundaries where these 

boundaries are not meaningful for statistical purposes.

For federally recognized American Indian tribes with reservations or off-reservation trust land 

and a population less than 2,400, a single tribal census tract is defined. Tribal participants in 

qualifying areas with a population greater than 2,400 could define additional tribal census 

tracts within their reservation or off-reservation trust land without regard to the standard census tract configuration. Tribal census tracts are designed to be permanent statistical divisions 

of American Indian reservations or off-reservation trust lands for the presentation of comparable data between decennial censuses, particularly for those American Indian areas that 

cross state or county boundaries where these boundaries were not meaningful for statistical 

purposes.

Tribal census tract codes are six characters long with a leading “T” alphabetic character 

followed by five-digit numeric codes having an implied decimal between the fourth and 

fifth character; for example, T01000, which translates as tribal census tract 10. Tribal block 

groups nest within tribal census tract. Since individual blocks are defined within the standard 

state-county-census tract hierarchy, a tribal census tract can contain seemingly duplicate 

block numbers, thus, tribal census tracts cannot be used to uniquely identify census blocks. 

Although technically not tribal census tracts, standard county-based census tracts with a 

majority of AI/AN population, housing, or land area associated with an American Indian area 

utilize codes in the 9400 range.

UNITED STATES (NATION)

The United States consists of the 50 States and the District of Columbia. The term “Nation” in 

data products refers to the United States. 

UNITED STATES AND TERRITORIES

The United States and Territories consists of the 50 States, the District of Columbia, Puerto 

Rico, the Island Areas, and the Minor Outlying Islands. 

URBAN AND RURAL

For the 2020 Census, the Census Bureau classified as urban all territory, population, and 

housing units located within densely developed Urban Areas of at least 2,500 people. The 

Census Bureau delineates Urban Area boundaries that represent densely developed territory, 

encompassing residential, commercial, and other nonresidential urban land uses. In general, 

this territory consists of areas of high population density and urban land use resulting in a 

representation of the “urban footprint.” Rural consists of all territory, population, and housing units located outside Urban Areas. For the 2010 Census and American Community Survey 

(ACS) data tabulations during the decade leading up to 2020, the Census Bureau identified 

two types of Urban Areas: urbanized areas of at least 50,000 people and urban clusters of at 

least 2,500 and less than 50,000 people. The Census Bureau does not specifically define “suburban,” but land use, population, and housing that data users typically consider suburban are 

included within the Census Bureau’s urban definition. 

For the 2020 Census, the urban and rural classification was applied to the 50 states, the 

District of Columbia, Puerto Rico, American Samoa, Guam, the Commonwealth of the 

Northern Mariana Islands, and the U.S. Virgin Islands.

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Urban Area Titles and Codes—The title of each Urban Area may contain up to three incorporated place or census designated place (CDP) names and includes the two-letter U.S. Postal 

Service abbreviation for each state or statistically equivalent entity into which the Urban 

Area extends. However, if the Urban Area does not contain an incorporated place or CDP, the 

Urban Area title includes the single name of a minor civil division or populated place recognized by the U.S. Geological Survey’s Geographic Names Information System.

Each Urban Area is assigned a five-digit numeric census code based on a national alphabetical sequence of all Urban Area names. A separate flag is included in data tabulation files to 

differentiate between urbanized areas and urban clusters. In printed reports, this differentiation is included in the name.

Relationship to Other Geographic Entities—Geographic entities, such as metropolitan and 

micropolitan statistical areas, counties, minor civil divisions, places, and census tracts, often 

contain both urban and rural territory, population, and housing units.

URBAN GROWTH AREA

Urban Growth Areas (UGAs) are legally defined entities in Oregon and Washington that the 

Census Bureau includes in the MAF/TIGER Database in agreement with the states. UGAs, 

which are defined around places, are used to regulate urban growth. UGA boundaries, which 

need not follow visible features, are delineated cooperatively by state and local officials, and 

then confirmed in state law. UGAs are a pilot project first defined only in Oregon for the 2000 

Census. Each UGA is identified by a five-digit numeric census code, usually the same as the 

five-digit Federal Information Processing Series (FIPS) code associated with the place for 

which the UGA is named.

VOTING DISTRICT

Voting Districts (VTDs) refer to the generic name for geographic entities, such as precincts, 

wards, and election districts, established by state governments for the purpose of conducting elections. States voluntarily participating in Phase 2 of the 2020 Census Redistricting Data 

Program provided the Census Bureau with boundaries, codes, and names for their VTDs. 

Each VTD is identified by a one-to-six-character alphanumeric census code that is unique 

within county. The code “ZZZZZZ” identifies a portion of counties (usually bodies of water) 

for which no VTDs were identified. For the 2020 Census Redistricting Data Program, only 

California, Hawaii, and Oregon did not provide VTDs in Phase 2 (the Voting District Project). 

Maine and West Virginia provided partial VTD coverage for their states. Therefore, for 2020 

Census data products, no VTDs exist in select areas of Maine and West Virginia, nor in the 

entirety of California, Hawaii, and Oregon.

Participating states often submitted VTD plans conforming to the feature network in the 

MAF/TIGER Database rather than the complete legal boundary of the VTD. If requested by 

the participating state, the Census Bureau identified the VTDs that represent an actual voting 

district with an “A” in the voting district indicator field. Where a participating state indicated 

that the VTD has been modified to follow existing features, the VTD is a pseudo-VTD, and the 

voting district indicator contains “P.”

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ZIP CODE TABULATION AREA

ZIP Code Tabulation Areas (ZCTAs) are approximate area representations of U.S. Postal 

Service (USPS) five-digit Zonal Improvement Plan (ZIP) Code service routes that the Census 

Bureau creates using whole blocks to present statistical data from censuses and surveys. 

The Census Bureau defines ZCTAs by allocating each block that contains addresses to a 

single ZCTA, usually to the ZCTA that reflects the most frequently occurring ZIP Code for the 

addresses within that tabulation block. Blocks that do not contain addresses, but are surrounded by a single ZCTA (enclaves) are assigned to the surrounding ZCTA; those surrounded 

by multiple ZCTAs are added to a single ZCTA based on limited buffering performed between 

multiple ZCTAs. 

The Census Bureau identifies five-digit ZCTAs using a five-character numeric code that represents the most frequently occurring USPS ZIP Code within that ZCTA, and this code has a 

fixed length of five digits and may contain leading zeros. 

Not all ZIP Codes in use by the USPS may have a ZCTA delineated to represent them, The 

USPS makes periodic changes to ZIP Codes to support more efficient mail delivery. In addition, the ZCTA delineation process primarily uses residential addresses and has a bias towards 

ZIP Codes used for city-style mail delivery, thus there may be ZIP Codes that are primarily 

nonresidential or used for PO boxes only that may not have a corresponding ZCTA. 

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Appendix B.

Definitions of Subject Characteristics

CONTENTS

Population Characteristics ....................................................... B-1

Age ......................................................................... B-1

Ethnicity and Racial Classification. ............................................. B-2

Hispanic or Latino Origin ...................................................... B-3

Race ........................................................................ B-4

Living Quarters ................................................................ B-8

Housing Units ................................................................ B-9

Occupied Housing Unit ...................................................... B-9

Vacant Housing Unit ........................................................ B-10

Housing for the Older Population ............................................ B-10

Group Quarters .............................................................. B-11

Institutional Group Quarters ................................................. B-11

Noninstitutional Group Quarters ............................................. B-13

POPULATION CHARACTERISTICS

Age

The data on age were derived from answers to a two-part question (i.e., age and date of 

birth). The age classification for a person in census tabulations is the age of the person in 

completed years as of April 1, 2020, the census reference date. Both age and date of birth 

responses are used in combination to determine the most accurate age for the person as 

of the census reference date. Inconsistently reported and missing values are assigned or 

allocated based on previous census records (either from the 2010 Census or the American 

Community Survey), other federal administrative records, the values of other variables for that 

person, the values of variables from other people in the household, or the values of variables 

from people in other households (i.e., hot deck imputation).

Age data are tabulated in age groupings and single years of age. Data on age also are used to 

classify other characteristics in census tabulations.

Limitation of the data. There is some tendency for respondents to provide their age as of 

the date they completed the census questionnaire or interview, not their age as of the census 

reference date. The two-part question and editing procedures have attempted to minimize the 

effect of this reporting problem on tabulations. Additionally, the current census age question displays the census reference date prominently, and interviewer training emphasizes the 

importance of collecting age as of the reference date.

Respondents sometimes round a person’s age up if they were close to having a birthday. For 

most single years of age, the misstatements are largely offsetting. The problem is most pronounced at age 0. Also, there may have been more rounding up to age 1 to avoid reporting 

age as 0 years. (Age in completed months was not collected for infants under age 1). Editing 

procedures correct this problem.

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There is some respondent resistance to reporting the ages of babies in completed years (i.e., 

0 years old when the baby is under 1 year old). Instead, babies’ ages are sometimes reported 

in months. The two-part question along with enhanced editing and data capture procedures intend to correct much of this problem before the age data are finalized in tabulations. 

Additionally, the current census age question includes an instruction for babies’ ages to be 

answered as “0” years old when they are under 1 year old.

Age heaping is a common age misreporting error. Age heaping is the tendency for people to 

overreport ages (or years of birth) that end in certain digits (commonly digits “0” or “5”) and 

underreport ages or years of birth ending in other digits. The two-part question can help minimize the effect of age heaping on the final tabulations.

Age data for centenarians have a history of data quality challenges. The counts in the 1970 

and 1980 Censuses for people 100 years and over were substantially overstated. Editing and 

data collection methods have been enhanced in order to meet the data quality challenges for 

this population.

It also has been documented that the population aged 69 in the 1970 Census and the population aged 79 in the 1980 Census were overstated. The population aged 89 in 1990 and the 

population aged 99 in 2000 did not have an overstated count. (For more information on the 

design of the age question, see the “Comparability” section below.)

Comparability. Age data have been collected in every census. However, there have been some 

differences in the way they have been collected and processed over time. In the 2020 Census 

(as in the 2010 Census and 2000 Census), each individual provided both an age and an exact 

date of birth. The 1990 Census collected age and year of birth. Prior censuses had collected 

month and quarter of birth in addition to age and year of birth. The 1990 Census change was 

made so that coded information could be obtained for both age and year of birth.

In each census since 1940, the age of a person was assigned when it was not reported. In 

censuses before 1940, with the exception of 1880, people of unknown age were shown as a 

separate category. Since 1960, assignment of unknown age has been performed by a general 

procedure described as “imputation.” The specific procedures for imputing age have been different in each census. 

Ethnicity and Racial Classification

The ethnicity and racial classifications used by the U.S. Census Bureau adhere to the October 

30, 1997, Federal Register Notice entitled, "Revisions to the Standards for the Classification of 

Federal Data on Race and Ethnicity" issued by the Office of Management and Budget (OMB). 

These OMB standards govern the definitions and categories used to collect and present federal data on ethnicity and race. OMB requires two minimum categories on ethnicity (Hispanic 

or Latino and Not Hispanic or Latino) and five minimum categories on race (White, Black or 

African American, American Indian or Alaska Native, Asian, and Native Hawaiian or Other 

Pacific Islander). The ethnicity and race categories are described below with a sixth category, 

"Some Other Race," added with OMB approval. In addition to the five race groups, OMB also 

states that respondents should be offered the option of selecting one or more races. Based 

on extensive research and outreach over the past decade, the design of the 2020 Census 

race and ethnicity questions provides ways for all respondents to self-identify their detailed 

identities.

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Hispanic or Latino Origin

The data on the Hispanic or Latino population were derived from answers to a question that 

was asked of all people. The 2020 Census Hispanic origin question included three detailed 

checkboxes (Mexican, Puerto Rican, Cuban), along with a “Yes, another Hispanic, Latino, 

or Spanish origin” checkbox, updated example groups, and a write-in area to collect additional detailed Hispanic responses. The 2020 Census instruction stated, “Print, for example, 

Salvadoran, Dominican, Colombian, Guatemalan, Spaniard, Ecuadorian, etc.” The examples for 

2020 are the largest Hispanic population groups representing the geographic diversity of the 

Hispanic or Latino category, as defined by the 1997 OMB standards.

The terms “Hispanic,” “Latino,” and “Spanish” are used interchangeably. Some respondents 

identify with all three terms, while others may identify with only one of these three specific 

terms. People who identify with the terms “Hispanic,” “Latino,” or “Spanish” are those who 

classify themselves in one of the specific Hispanic, Latino, or Spanish categories listed on 

the questionnaire (“Mexican,” “Puerto Rican,” or “Cuban”) as well as those who indicate that 

they are “another Hispanic, Latino, or Spanish origin.” People who do not identify with one of 

the specific origins listed on the questionnaire but indicate that they are “another Hispanic, 

Latino, or Spanish origin” are those whose origins are from Spain, the Spanish-speaking 

countries of Central or South America, or another Spanish culture or origin. Up to six write-in 

responses to the “another Hispanic, Latino, or Spanish origin” category are coded. Knowing 

that some respondents may self-identify by reporting multiple Hispanic ethnicities, such as 

“Cuban" AND "Salvadoran," 2020 Census entries with multiple detailed Hispanic responses 

will be collected for research purposes. However, following the OMB standards, only a single 

Hispanic response will be tabulated, as was done for the 2010 Census.

Origin can be viewed as the heritage, nationality group, lineage, or country of birth of the person or the person’s parents or ancestors before their arrival in the United States. People who 

identify their origin as Hispanic, Latino, or Spanish may be of any race.

Coding of Hispanic Origin Write-in Responses. There were two types of coding operations: 

(1) automated coding, where a write-in response was automatically coded if it matched a 

write-in response already contained in a database known as the "master file," and (2) expert 

coding, which took place when a write-in response did not match an entry already on the 

master file and was sent to expert coders trained on the subject matter. 

Editing of Hispanic Origin Responses. If an individual did not provide a Hispanic origin 

response, their origin may have been assigned from previous census records or federal administrative records, if available, or was allocated using specific rules of precedence of household 

relationship. For example, if origin was missing for a natural-born child in the household, then 

either the origin of the householder, another natural-born child, or spouse of the householder 

was allocated.

If Hispanic origin could not be assigned from other sources and was not reported for anyone 

in the household, then the Hispanic origin of a householder in a previously processed household with the same race was allocated to the individual missing a response. 

Comparability. There were two important changes to the Hispanic origin question for the 

2020 Census. First, in 2020, the six example groups provided with the "Yes, another Hispanic, 

Latino, or Spanish origin" category were updated to Salvadoran, Dominican, Colombian, 

Guatemalan, Spaniard, and Ecuadorian to reflect the largest Hispanic groups in the United 

States. In 2010, the examples provided were Argentinean, Colombian, Dominican, Nicaraguan, 

Salvadoran, and Spaniard. Second, in 2020, 200 characters were captured, allowing for up 

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to six responses to be coded from the write-in category, "Yes, another Hispanic, Latino, 

or Spanish origin." In 2010, 30 characters were captured, and up to two responses were 

coded from this write-in field. However, following the OMB standards, only a single Hispanic 

response will be tabulated, as was done for the 2010 Census.

Race

The data on race were derived from answers to the question on race that was asked of all 

people. The Census Bureau collects race data in accordance with guidelines provided by OMB, 

and these data are based on self-identification. The racial categories included in the census 

questionnaire generally reflect a social definition of race recognized in this country and not 

an attempt to define race biologically, anthropologically, or genetically. In addition, it is recognized that the categories of the race item include racial and national origin or sociocultural 

groups. People may choose to report more than one race to indicate their racial mixture, such 

as “American Indian” and “White.” People who identify their origin as Hispanic, Latino, or 

Spanish may be of any race.

The design of the 2020 Census race question included 15 separate response categories and 5 

areas where respondents could write-in detailed information about their race. The response 

categories and write-in answers can be combined to create the 5 minimum OMB race categories plus Some Other Race, and the Two or More Races population. In addition to White, Black 

or African American, American Indian and Alaska Native, and Some Other Race, 7 of the 15 

response categories are detailed Asian groups and 4 are detailed Native Hawaiian and Other 

Pacific Islander groups.

Coding of Race Responses. There are two types of coding operations: (1) automated coding where a write-in response is automatically coded if it matches a write-in response already 

contained in a database known as the "master file," and (2) expert coding, which took place 

when a write-in response did not match an entry already on the master file, and was sent to 

expert coders familiar with the subject matter. During the coding process, subject-matter 

specialists reviewed and coded written entries from all write-in lines available on the race 

question.

Editing of Race Responses. If an individual did not provide a race response, a response 

may have been assigned from previous census records or federal administrative records, if 

available, or their response may have been allocated using specific rules of precedence of 

household relationship. For example, if race was missing for a natural-born child in the household, then either the race or races of the householder, another natural-born child, or spouse of 

the householder were allocated. 

If race could not be assigned from other sources and was not reported for anyone in the 

household, then the race or races of a householder in a previously processed household were 

allocated to the individual missing a response.

Definitions from OMB guide the Census Bureau in classifying written responses to the race 

question:

White. A person having origins in any of the original peoples of Europe, the Middle East, or 

North Africa. It includes people who indicate their race as "White" or report responses such 

as German, Irish, English, Italian, Lebanese, and Egyptian. The category also includes groups 

such as Polish, French, Iranian, Slavic, Cajun, Chaldean, etc.

Black or African American. A person having origins in any of the Black racial groups of Africa. 

It includes people who indicate their race as "Black or African American" or report responses 

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such as African American, Jamaican, Haitian, Nigerian, Ethiopian, or Somali. The category also 

includes groups such as Ghanaian, South African, Barbadian, Kenyan, Liberian, Bahamian, etc.

American Indian or Alaska Native. A person having origins in any of the original peoples of 

North and South America (including Central America) and who maintains tribal affiliation or 

community attachment. This category includes people who indicate their race as “American 

Indian or Alaska Native,” or report responses such as Navajo Nation, Blackfeet Tribe, Mayan, 

Aztec, Native Village of Barrow Inupiat Traditional Government, or Nome Eskimo Community.

Respondents who identified themselves as “American Indian or Alaska Native” were asked to 

report their enrolled or principal tribe. Therefore, tribal data in tabulations reflect the written 

entries reported on the questionnaires. Some of the entries (for example, Metlakatla Indian 

Community and Umatilla) represent reservations or a confederation of tribes on a reservation. The information on tribe is based on self-identification and therefore does not reflect 

any designation of federally or state-recognized tribe. The information for the 2020 Census 

was updated from 2010 to 2020 based on the annual Federal Register notice entitled “Indian 

Entities Recognized and Eligible to Receive Services From the United States Bureau of Indian 

Affairs,” Department of the Interior, Bureau of Indian Affairs, issued by OMB, and through consultation with American Indian and Alaska Native communities and leaders.

Asian. A person having origins in any of the original peoples of the Far East, Southeast Asia, 

or the Indian subcontinent including, for example, India, China, the Philippine Islands, Japan, 

Korea, or Vietnam. 

It includes people who indicate their race as Asian Indian, Chinese, Filipino, Korean, Japanese, 

Vietnamese, and Other Asian, or provide other detailed Asian responses such as Pakistani, 

Cambodian, Hmong, Thai, Bengali, Mien, etc.

Native Hawaiian or Other Pacific Islander. A person having origins in any of the original 

peoples of Hawaii, Guam, Samoa, or other Pacific Islands. It includes people who indicate 

their race as Native Hawaiian, Chamorro, Samoan, and Other Pacific Islander or provide other 

detailed Other Pacific Islander responses such as Palauan, Tahitian, Chuukese, Pohnpeian, 

Saipanese, Yapese, etc.

Some Other Race. Includes all other responses not included in the “White,” “Black or African 

American,” “American Indian or Alaska Native,” “Asian,” and “Native Hawaiian or Other Pacific 

Islander” race categories described above. Respondents reporting entries such as multiracial, mixed, interracial, or a Hispanic, Latino, or Spanish group (for example, Mexican, Puerto 

Rican, Cuban, or Spanish) in response to the race question are included in this category.

Two or More Races. People may choose to provide two or more races either by checking two 

or more race response checkboxes, by providing multiple responses, or by some combination 

of checkboxes and other responses. The race response categories shown on the questionnaire 

are collapsed into the five minimum race groups identified by OMB and the Census Bureau’s 

“Some Other Race” category. For data product purposes, “Two or More Races” refers to combinations of two or more of the following race categories:

1. White

2. Black or African American

3. American Indian or Alaska Native

4. Asian

5. Native Hawaiian or Other Pacific Islander

6. Some Other Race

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There are 57 possible combinations (see Figure B-1) involving the race categories shown 

above. Thus, according to this approach, a response of “White” and “Asian” was tallied as Two 

or More Races, while a response of “Japanese” and “Chinese” was not because “Japanese” 

and “Chinese” are both Asian responses. 

Figure B-1. Two or More Races (57 Possible Specified Combinations)

1. White; Black or African American

2. White; American Indian and Alaska Native

3. White; Asian

4. White; Native Hawaiian and Other Pacific Islander

5. White; Some Other Race

6. Black or African American; American Indian and Alaska Native

7. Black or African American; Asian

8. Black or African American; Native Hawaiian and Other Pacific Islander

9. Black or African American; Some Other Race

10. American Indian and Alaska Native; Asian

11. American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander

12. American Indian and Alaska Native; Some Other Race

13. Asian; Native Hawaiian and Other Pacific Islander

14. Asian; Some Other Race

15. Native Hawaiian and Other Pacific Islander; Some Other Race

16. White; Black or African American; American Indian and Alaska Native

17. White; Black or African American; Asian

18. White; Black or African American; Native Hawaiian and Other Pacific Islander

19. White; Black or African American; Some Other Race

20. White; American Indian and Alaska Native; Asian 

21. White; American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander 

22. White; American Indian and Alaska Native; Some Other Race

23. White; Asian; Native Hawaiian and Other Pacific Islander

24. White; Asian; Some Other Race

25. White; Native Hawaiian and Other Pacific Islander; Some Other Race

26. Black or African American; American Indian and Alaska Native; Asian

27. Black or African American; American Indian and Alaska Native; Native Hawaiian and Other 

Pacific Islander

28. Black or African American; American Indian and Alaska Native; Some Other Race

29. Black or African American; Asian; Native Hawaiian and Other Pacific Islander

30. Black or African American; Asian; Some Other Race

31. Black or African American; Native Hawaiian and Other Pacific Islander; Some Other Race

32. American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander

33. American Indian and Alaska Native; Asian; Some Other Race

34. American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander; Some 

Other Race

35. Asian; Native Hawaiian and Other Pacific Islander; Some Other Race

36. White; Black or African American; American Indian and Alaska Native; Asian

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37. White; Black or African American; American Indian and Alaska Native; Native Hawaiian 

and Other Pacific Islander

38. White; Black or African American; American Indian and Alaska Native; Some Other Race

39. White; Black or African American; Asian; Native Hawaiian and Other Pacific Islander

40. White; Black or African American; Asian; Some Other Race

41. White; Black or African American; Native Hawaiian and Other Pacific Islander; Some Other 

Race

42. White; American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific 

Islander

43. White; American Indian and Alaska Native; Asian; Some Other Race

44. White; American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander; 

Some Other Race

45. White; Asian; Native Hawaiian and Other Pacific Islander; Some Other Race

46. Black or African American; American Indian and Alaska Native; Asian; Native Hawaiian and 

Other Pacific Islander

47. Black or African American; American Indian and Alaska Native; Asian; Some Other Race

48. Black or African American; American Indian and Alaska Native; Native Hawaiian and Other 

Pacific Islander; Some Other Race

49. Black or African American; Asian; Native Hawaiian and Other Pacific Islander; Some Other 

Race

50. American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander; 

Some Other Race

51. White; Black or African American; American Indian and Alaska Native; Asian; Native 

Hawaiian and Other Pacific Islander

52. White; Black or African American; American Indian and Alaska Native; Asian; Some Other 

Race

53. White; Black or African American; American Indian and Alaska Native; Native Hawaiian 

and Other Pacific Islander; Some Other Race

54. White; Black or African American; Asian; Native Hawaiian and Other Pacific Islander; Some 

Other Race

55. White; American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific 

Islander; Some Other Race

56. Black or African American; American Indian and Alaska Native; Asian; Native Hawaiian and 

Other Pacific Islander; Some Other Race

57. White; Black or African American; American Indian and Alaska Native; Asian; Native 

Hawaiian and Other Pacific Islander; Some Other Race 

Given the many possible ways of displaying data on two or more races, data products will 

provide varying levels of detail. The most common presentation shows a single line indicating 

“Two or More Races.” Some data products provide totals of all 57 possible combinations of 

two or more races, as well as subtotals of people reporting a specific number of races such as 

people reporting two races and people reporting three races.

In other presentations on race, data are shown for the total number of people who reported 

one of the six categories alone or in combination with one or more other race categories. For 

example, the category “Asian alone or in combination with one or more other races” includes 

people who reported Asian alone and people who reported Asian in combination with one 

or more of the other race groups (i.e., White, Black or African American, American Indian or 

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Alaska Native, Native Hawaiian and Other Pacific Islander, and Some Other Race). This number, therefore, represents the maximum number of people who reported as Asian in the question on race. When this data presentation is used, the individual race categories will add to 

more than the total population because people may be included in more than one category.

Comparability. Several important updates were made to the race question for the 2020 

Census. First, write-in response areas were added for the "White" and "Black or African 

American" racial categories. For the 2010 Census, the "White" and "Black or African 

American" categories did not have an area for write-in responses. Second, six examples were 

provided for each of the write-in fields allocated to the "White," "Black or African American," 

and "American Indian or Alaska Native" groups. These examples represent some of the largest population groups within the geographically diverse population of each category. Third, 

the category “Black, African Am., or Negro” was changed to “Black or African Am.” on paper 

questionnaires and “Black or African American” on electronic questionnaires. Fourth, the 

examples provided for the "Other Asian" and "Other Pacific Islander" groups have been 

updated to reflect the changes in population sizes and proportions. Fifth, the checkbox category “Guamanian or Chamorro” was changed to “Chamorro.” Finally, the write-in instructions 

for the "Some Other Race" category have been updated to better solicit detailed reporting. 

Whereas the 2010 Census form included the instruction to "Print race," the instruction used in 

the 2020 Census was updated to "Print race or origin."

Likewise, several updates were made to the amount of data that are collected from each of 

the write-in lines on the race question. While the 2010 Census captured up to 30 characters 

from each line, allowing two distinct groups to be tabulated from each, the 2020 Census 

captured 200 characters, allowing up to six groups to be coded and tabulated from each line. 

The OMB standards encourage the collection of more detailed information, and facilitating 

the reporting of detailed racial/ethnic identities for all population groups has been a major 

objective of the Census Bureau’s research for improving race and ethnicity data over the past 

decade. This objective is in line with OMB standards, which encourage federal agencies to 

collect additional detailed data, as long as the data can be aggregated to the minimum OMB 

categories.

For more information about comparability to data collected in previous censuses, see 2010 

Census Summary File 1 Technical Documentation prepared by the U.S. Census Bureau, revised 

2012, <www.census.gov/prod/cen2010/doc/sf1.pdf>. 

LIVING QUARTERS

All living quarters are classified as either housing units or group quarters. Living quarters 

are usually found in structures that are intended for residential use, but also may be found 

in structures intended for nonresidential use. Any place where someone lives is considered a living quarters such as an apartment, a dormitory, a shelter for people experiencing 

homelessness, a barracks, or a nursing facility. Even tents, old railroad cars, and boats are 

considered to be living quarters if someone claims them as his or her residence. Note that 

structures that do not meet the definition of a living quarters at the time of listing may meet 

the definition at the time of enumeration. Some types of structures, such as those cited in 

items 1 and 2 below, are included in address canvassing operations as placeholders, with the 

final decision on their living quarters’ status made during enumeration. Other types of structures, such as those cited in items 3 and 4 below, are not included in the Address Canvassing 

operation.

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The following examples are not considered living quarters:

1. Structures, such as houses and apartments, that resemble living quarters but are being 

used entirely for nonresidential purposes, such as a store or an office, or used for the 

storage of business supplies or inventory, machinery, or agricultural products are not 

enumerated.

2. Single units, as well as units in multiunit residential structures under construction in 

which no one is living or staying, are not considered living quarters until construction 

has reached the point where all exterior windows and doors are installed and final usable 

floors are in place. Units that do not meet these criteria are not enumerated.

3. Structures in which no one is living or staying that are open to the elements—that is, the 

roof, walls, windows, and/or doors no longer protect the interior from the elements—are 

not enumerated. Also, vacant structures with a posted sign indicating that they are condemned or they are to be demolished are not enumerated.

4. Boats, recreational vehicles (RVs), tents, caves, and similar types of shelter that no one is 

using as a usual residence are not considered living quarters and are not enumerated.

Housing Units

A housing unit is a living quarters in which the occupant or occupants live separately from 

any other individuals in the building and have direct access to their living quarters from outside the building or through a common hall. Housing units are usually houses, apartments, 

mobile homes, groups of rooms, or single rooms that are occupied as separate living quarters. 

They are residences for single individuals, for groups of individuals, or for families who live 

together. A single individual or a group living in a housing unit is defined to be a household. 

Additional details about housing for the elderly population and group homes are provided in 

the section “Housing for the Older Population.”

For vacant housing units, the criteria of separateness and direct access are applied to the 

intended occupants whenever possible. Nontraditional living quarters, such as boats, RVs, and 

tents, are considered housing units ONLY if someone is living in them and they are either the 

occupant’s usual residence or the occupant has no usual residence elsewhere. These nontraditional living arrangements are not considered housing units if they are vacant.

Housing units are classified as being either occupied or vacant.

Occupied Housing Unit. A housing unit is classified as occupied if it is the usual place of residence of the individual or group of individuals living in it on Census Day, or if the occupants 

are only temporarily absent, such as away on vacation, in the hospital for a short stay, or on a 

business trip, and will be returning.

The occupants may be one individual, a single family, two or more families living together, or 

any other group of related or unrelated individuals who share living arrangements. Occupied 

rooms or suites of rooms in hotels, motels, and similar places are classified as housing units 

only when occupied by permanent residents; that is, occupied by individuals who consider 

the hotel their usual place of residence or who have no usual place of residence elsewhere. 

However, when rooms in hotels and motels are used to provide shelter for people experiencing homelessness, they are not housing units. Rooms used in this way are considered group 

quarters.

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Vacant Housing Unit. A housing unit is classified as vacant if no one is living in it on Census 

Day, unless its occupant or occupants are only temporarily absent—such as away on vacation, 

in the hospital for a short stay, or on a business trip—and will be returning.

Housing units temporarily occupied at the time of enumeration entirely by individuals who 

have a usual residence elsewhere are classified as vacant. When housing units are vacant, 

the criteria of separateness and direct access are applied to the intended occupants whenever possible. If that information cannot be obtained, the criteria are applied to the previous 

occupants.

Boats, RVs, tents, caves, and similar shelter that no one is using as a usual residence are not 

considered living quarters and, therefore, are not enumerated at all.

Housing for the Older Population. Housing specifically for the older population has become 

more prevalent and is being identified by many different names. Living quarters in these 

facilities, unless they meet the definition of skilled nursing facilities, are housing units with 

each resident’s living quarters considered a separate housing unit if it meets the housing unit 

definition of direct access. These residential facilities may be referred to as senior apartments, 

active adult communities, congregate care, continuing care retirement communities, independent living, board and care, or assisted living. People may be required to meet certain criteria 

to be able to live in these facilities, but once accepted as residents, they have unrestricted 

access to and from their units to the outside.

Housing units and group quarters may coexist under the same entity or organization and in 

some situations actually share the same structure. An assisted living facility complex may have 

a skilled nursing floor or wing that meets the definition of a nursing facility and is, therefore, a 

group quarters, while the rest of the living quarters in the facility are considered to be housing 

units. Congregate care facilities and continuing care retirement communities often consist of 

several different types of living quarters, with varying services and levels of care. Some of the 

living quarters in these facilities and communities are considered housing units, and some are 

considered group quarters, depending on which definition they meet.

Comparability. The first Census of Housing in 1940 established the “dwelling unit” concept. 

Although the term became “housing unit” and the definition was modified slightly in succeeding censuses, the housing unit definition remained essentially comparable between 1940 and 

1990. Since 1990, two changes were made to the housing unit definition.

The first change eliminated the concept of “eating separately.” The elimination of the eating 

criterion is more in keeping with the United Nations’ definition of a housing unit that stresses 

the entire concept of separateness rather than the specific “eating” element. Although the 

“eating separately” criterion previously was included in the definition of a housing unit, the 

data needed to distinguish whether the occupants ate separately from any other people in 

the building were not collected. (Questions that asked households about their eating arrangements have not been included in the census since 1970.) Therefore, the current definition better reflects the information that is used in the determination of a housing unit.

The second change for the 2000 Census eliminated the “number of nonrelatives” criterion; 

that is, “9 or more people unrelated to the householder,” which caused a conversion of housing units to group quarters. This change was prompted by the following considerations: (1) 

there were relatively few such conversions made as a result of this rule in 1990; (2) household relationship and housing data were lost by converting these units to group quarters; and 

(3) there was no empirical support for establishing a particular number of nonrelatives as a 

threshold for these conversions.

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In 1960, 1970, and 1980, vacant rooms in hotels, motels, and other similar places where 75 

percent or more of the accommodations were occupied by permanent residents were counted 

as part of the housing inventory. However, an evaluation of the data collection procedures 

prior to the 1990 Census indicated that the concept of permanency was a difficult and confusing procedure for enumerators to apply correctly. Consequently, in the 1990 Census, vacant 

rooms in hotels, motels, and similar places were not counted as housing units. This procedure 

was used in the 2020 Census. 

Group Quarters

Group quarters are places where people live or stay, in a group living arrangement that are 

owned or managed by an entity or organization providing housing and/or services for the 

residents. These services may include custodial or medical care as well as other types of 

assistance, and residency is commonly restricted to those receiving these services. This is not 

a typical household-type living arrangement. People living in group quarters are usually not 

related to each other.

Group quarters include such places as college residence halls, residential treatment centers, 

skilled-nursing facilities, group homes, military barracks, correctional facilities, and workers’ 

dormitories.

Institutional Group Quarters

Institutional group quarters (group quarters type codes 101–106, 201–203, 301, and 401–405) 

are facilities that house those who are primarily ineligible, unable, or unlikely to participate in 

the labor force while residents.

Correctional Facilities for Adults (codes 101–106)—Correctional facilities for adults include 

the following types:

Federal detention centers (code 101)—Federal detention centers are stand alone, generally multi-level, federally operated correctional facilities that provide “short-term” confinement or custody of adults pending adjudication or sentencing. These facilities may 

hold pretrial detainees, holdovers, sentenced offenders, and Immigration and Customs 

Enforcement (ICE) inmates, formerly called Immigration and Naturalization Service (INS) 

inmates. These facilities include Metropolitan Correctional Centers (MCCs), Metropolitan 

Detention Centers (MDCs), Federal Detention Centers (FDCs), Bureau of Indian Affairs 

Detention Centers, ICE Service Processing Centers, and ICE Contract Detention 

Facilities.

Federal (code 102) and state (code 103) prisons—Federal and state prisons are adult 

correctional facilities where people convicted of crimes serve their sentences. Common 

names include prison, penitentiary, correctional institution, federal or state correctional 

facility, and conservation camp. The prisons are classified by two types of control: (1) 

“federal” (operated by or for the Bureau of Prisons of the U.S. Department of Justice) 

and (2) “state.” Residents who are forensic patients or criminally insane are classified on 

the basis of where they resided at the time of enumeration. Patients in hospitals (units, 

wings, or floors) operated by or for federal or state correctional authorities are counted 

in the prison population. Other forensic patients will be enumerated in psychiatric hospital units and floors for long-term non-acute patients. This category may include privately 

operated correctional facilities.

Local jails and other municipal confinement facilities (code 104)—Local jails and other 

municipal confinement facilities are correctional facilities operated by or for counties, 

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cities, and American Indian and Alaska Native tribal governments. These facilities hold 

adults detained pending adjudication and/or people committed after adjudication. 

This category also includes work farms and camps used to hold people awaiting trial or 

serving time on relatively short sentences. Residents who are forensic patients or criminally insane are classified on the basis of where they resided at the time of enumeration. 

Patients in hospitals (units, wings, or floors) operated by or for local correctional authorities are counted in the jail population. Other forensic patients will be enumerated in 

psychiatric hospital units and floors for long-term non-acute care patients. This category 

may include privately operated correctional facilities.

Correctional residential facilities (code 105)—Correctional residential facilities are community-based facilities operated for correctional purposes. The facility residents may 

be allowed extensive contact with the community, such as for employment or attending school, but are obligated to occupy the premises at night. Examples of correctional 

residential facilities are halfway houses, restitution centers, and prerelease, work release, 

and study centers.

Military disciplinary barracks and jails (code 106)—Military disciplinary barracks and jails 

are correctional facilities managed by the military to hold those awaiting trial or convicted of crimes.

Juvenile Facilities (codes 201–203)—Juvenile facilities include the following: 

Group homes for juveniles (non-correctional) (code 201)—Group homes for juveniles 

include community-based group living arrangements for youth in residential settings 

that are able to accommodate three or more clients of a service provider. The group 

home provides room and board and services, including behavioral, psychological, or 

social programs. Generally, clients are not related to the caregiver or to each other. 

Examples of non-correctional group homes for juveniles are maternity homes for unwed 

mothers, orphanages, and homes for abused and neglected children in need of services. 

Group homes for juveniles do not include residential treatment centers for juveniles or 

group homes operated by or for correctional authorities.

Residential treatment centers for juveniles (non-correctional) (code 202)—Residential 

treatment centers for juveniles include facilities that primarily serve the youth and provide on-site services in a highly structured live-in environment for the treatment of drug/

alcohol abuse, mental illness, and emotional/behavioral disorders. These facilities are 

staffed 24-hours a day. The focus of a residential treatment center is on the treatment 

program. Residential treatment centers for juveniles do not include facilities operated by 

or for correctional authorities.

Correctional facilities intended for juveniles (code 203)—Correctional facilities intended 

for juveniles include specialized facilities that provide strict confinement for their residents and detain juveniles awaiting adjudication, commitment or placement, and/or 

those being held for diagnosis or classification. Also included are correctional facilities 

where residents are permitted contact with the community for purposes such as attending school or holding a job. Examples of correctional facilities intended for juveniles are 

residential training schools and farms, reception and diagnostic centers, group homes 

operated by or for correctional authorities, detention centers, and boot camps for juvenile delinquents.

Nursing Facilities/Skilled-Nursing Facilities (code 301)—Nursing facilities/skilled-nursing 

facilities include facilities licensed to provide medical care with 7-day, 24-hour coverage for 

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people requiring long-term non-acute care. People in these facilities require nursing care, 

regardless of age. Either of these types of facilities may be referred to as nursing homes.

Other Institutional Facilities (codes 401–405)—Other institutional facilities include the 

following:

Mental (psychiatric) hospitals and psychiatric units in other hospitals (code 401)—Mental 

(psychiatric) hospitals and psychiatric units in other hospitals include psychiatric hospitals, units and floors for long-term non-acute care patients. The primary function of the 

hospital, unit, or floor is to provide diagnostic and treatment services for long-term nonacute patients who have psychiatric-related illness. All patients are enumerated in this 

category.

Hospitals with patients who have no usual home elsewhere (code 402)—Hospitals with 

patients who have no usual home elsewhere include hospitals that have any patients who 

have no exit or disposition plan, or who are known as “boarder patients” or “boarder 

babies.” All hospitals are eligible for inclusion in this category except psychiatric hospitals, units, wings, or floors operated by federal, state, or local correctional authorities. Patients in hospitals operated by these correctional authorities will be counted in 

the prison or jail population. Psychiatric units and hospice units in hospitals are also 

excluded. Only patients with no usual home elsewhere are enumerated in this category.

In-patient hospice facilities (both free-standing and units in hospitals) (code 403)—

In-patient hospice facilities (both free-standing and units in hospitals) include facilities 

that provide palliative, comfort, and supportive care for terminally ill patients and their 

families. Only patients with no usual home elsewhere are tabulated in this category.

Military treatment facilities with assigned patients (code 404)—Military treatment facilities with assigned patients include military hospitals and medical centers with active 

duty patients assigned to the facility. Only these patients are enumerated in this 

category.

Residential schools for people with disabilities (code 405)—Residential schools for 

people with disabilities include schools that provide the teaching of skills for daily living, education programs, and care for students with disabilities in a live-in environment. 

Examples of residential schools for people with disabilities are residential schools for the 

physically or developmentally disabled.

Noninstitutional Group Quarters

Noninstitutional group quarters (group quarters type codes 501, 601, 602, 701, 702, 704, 706, 

801, 802, 900, 901, 903, and 904) are facilities that house those who are primarily eligible, 

able, or likely to participate in the labor force while residents.

College/University Student Housing (code 501)—College/university student housing includes 

residence halls, and other buildings, including apartment-style student housing, designed 

primarily to house college and university students in a group living arrangement either on or 

off campus. These facilities are owned, leased, or managed either by a college, university, or 

seminary, or by a private entity or organization. Fraternity and sorority housing recognized by 

the college or university are included as college student housing. However, students attending 

the U.S. Naval Academy, U.S. Military Academy (West Point), U.S. Coast Guard Academy, and 

U.S. Air Force Academy are counted in military group quarters.

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Military Quarters (codes 601 and 602)—Military quarters (code 601) are facilities that include 

military personnel living in barracks (including “open” barrack transient quarters) and dormitories and military ships (code 602). Patients assigned to military treatment facilities and 

people being held in military disciplinary barracks and jails are not enumerated in this category. Patients in military treatment facilities with no usual home elsewhere are not enumerated in this category.

Other Noninstitutional Facilities (codes 701, 702, 704, 706, 801, 802, 900, 901, 902, 903, and 

904)—Other noninstitutional facilities include the following:

Emergency and transitional shelters (with sleeping facilities) for people experiencing 

homelessness (code 701)—Emergency and transitional shelters (with sleeping facilities) for people experiencing homelessness are facilities where people experiencing 

homelessness stay overnight. These include:

1. Shelters that operate on a first-come, first-serve basis where people must leave in the 

morning and have no guaranteed bed for the next night.

2. Shelters where people know that they have a bed for a specified period of time (even 

if they leave the building every day). 

3. Shelters that provide temporary shelter during extremely cold weather (such as 

churches). This category does not include shelters that operate only in the event of a 

natural disaster.

Examples are emergency and transitional shelters; missions; hotels and motels used 

to shelter people experiencing homelessness; shelters for children who are runaways, 

neglected, or experiencing homelessness; and similar places known to have people experiencing homelessness. 

Soup kitchens, regularly scheduled mobile food vans, and targeted non-sheltered outdoor locations (codes 702, 704, and 706)—Soup kitchens, regularly scheduled mobile 

food vans, and targeted non-sheltered outdoor locations include soup kitchens that offer 

meals organized as food service lines or bag or box lunches for people experiencing 

homelessness; street locations where mobile food vans regularly stop to provide food to 

people experiencing homelessness; and targeted non-sheltered outdoor locations where 

people experiencing homelessness live without paying to stay. This would also include 

persons staying in pre-identified car, recreational vehicle (RV), and tent encampments. 

Targeted non-sheltered outdoor locations must have a specific location description; for 

example, “the Brooklyn Bridge at the corner of Bristol Drive,” “the 700 block of Taylor 

Street behind the old warehouse,” or the address of the parking lot being utilized. 

Group homes intended for adults (code 801)—Group homes intended for adults are community-based group living arrangements in residential settings that are able to accommodate three or more clients of a service provider. The group home provides room and 

board and services, including behavioral, psychological, or social programs. Generally, 

clients are not related to the caregiver or to each other. Group homes do not include 

residential treatment centers or facilities operated by or for correctional authorities.

Residential treatment centers for adults (code 802)—Residential treatment centers 

for adults provide treatment on-site in a highly structured live-in environment for the 

treatment of drug/alcohol abuse, mental illness, and emotional/behavioral disorders. 

They are staffed 24 hours a day. The focus of a residential treatment center is on the 

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treatment program. Residential treatment centers do not include facilities operated by or 

for correctional authorities.

Maritime/Merchant vessels (code 900)—Maritime/merchant vessels include U.S. owned 

and operated flag vessels used for commercial or noncombatant government related 

purposes at U.S. ports, upon the sea, or on the Great Lakes.

Workers’ group living quarters and Job Corps centers (code 901)—Workers’ group living 

quarters and Job Corps centers include facilities such as dormitories, bunkhouses, and 

similar types of group living arrangements for agricultural and non-agricultural workers. 

This category also includes facilities that provide a full-time, year-round residential program offering a vocational training and employment program that helps young people 

16 to 24 years old learn a trade, earn a high school diploma or GED, and get help finding 

a job. Examples are group living quarters at migratory farm-worker camps, construction 

workers’ camps, Job Corps centers, and vocational training facilities.

Living quarters for victims of natural disasters (code 903)—Living quarters for victims 

of natural disasters are temporary group living arrangements established as a result of 

natural disasters.

Other noninstitutional group quarters (code 904)—Other noninstitutional group quarters.

Comparability. The 2020 definition for College/University Student Housing was expanded 

for clarity. References were added for apartment-style student housing and that college and 

university student housing can be either on or off campus.

The 2010 Census definitions were streamlined due to the consolidation of group quarters 

types after the 2000 Census.

Since the 2000 Census, group quarters are either institutional group quarters or noninstitutional group quarters.

Institutional group quarters are facilities that house those who are primarily ineligible, unable, 

or unlikely to participate in the labor force while residents. This definition has been simplified 

since the 1990 and 2000 Censuses (both used the same definition, which focused on institutions providing formally authorized, supervised care or custody) to focus on labor force 

participation. 

The phrase “institutionalized persons” in the 1990 Census data was changed to “institutionalized population” in the 2000 Census and continues in the 2020 Census. 

The phrase “staff residents” was used for staff living in institutions in both the 1990 and 2000 

Censuses. In the 2000 Census, staff living in institutions included those living in “agricultural 

workers’ dormitories,” “other workers’ dormitories,” “Job Corps and vocational training facilities,” “dormitories for nurses and interns in military hospitals,” and “dormitories for nurses and 

interns in general hospitals.” In the 2020 and 2010 Censuses, all these groups are categorized 

as “workers’ group living quarters and Job Corps centers.”

Noninstitutional group quarters—In the 1990 Census, the Census Bureau used the phrase 

“other persons in group quarters” for people living in noninstitutionalized group quarters. Since 2000, the group has been referred to as the “noninstitutionalized population.” 

Noninstitutional group quarters are facilities that house those who are primarily eligible, able, 

or likely to participate in the labor force while a resident.

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As of the 2000 Census, the Census Bureau dropped the rule of classifying ten or more unrelated people living together as living in noninstitutional group quarters. This rule was used in 

the 1990 and 1980 Censuses. In the 1970 Census, the rule was six or more unrelated people.

Military quarters—In 1960 data products, people in military barracks were shown only for men. 

Starting in 1970 and to the present, data are available for both men and women in military 

barracks. What were classified as “transient quarters for temporary residents (military or 

civilian)” in the 2000 Census data products no longer include the civilian population, and the 

military residents are tabulated in “military quarters” in 2010 and 2020 Census data products.

Other noninstitutional facilities—Since the 2010 Census, “workers’ group living quarters and 

Job Corps centers” are comprised of the following the 2000 Census group quarters types: 

“agriculture workers’ dormitories,” “other workers’ dormitories,” “Job Corps and vocational 

training facilities,” and “dormitories for nurses and interns in hospitals (general and military).” 

As in the 2000 and 1990 Census, workers’ dormitories were classified as group quarters 

regardless of the number of people sharing the dormitory. In the 1980 Census, ten or more 

unrelated people had to share the dorm for it to be classified as a group quarters.

The following group quarters types that were included in the 2000 Census are no longer classified as group quarters: “military hotels/campgrounds,” “transient locations,” and “other 

nonhousehold living situations.”

Since the 2000 Census, rooming and boarding houses have been classified as housing units. In 

the 1990 Census, these were considered group quarters.

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Appendix C.

Data Collection and Processing Procedures

CONTENTS

2020 Census Mission and Scope .................................................. C-1

The 2020 Census Operational Overview ........................................... C-2

Establish Where to Count .................................................... C-3

Motivate People to Respond .................................................. C-3

Count the Population ........................................................ C-3

Release Census Results ...................................................... C-3

The 2020 Census Operations .................................................... C-3

List of States Serviced by Each Regional Office .................................... C-10

2020 CENSUS MISSION AND SCOPE

The purpose of the 2020 Census was to conduct a census of the population and housing, 

and disseminate the results to the President, the states, and the American people. The goal 

of the 2020 Census was to count everyone once, only once, and in the right place. The 

primary requirement served by the decennial census is the apportionment of seats allocated to the states for the House of Representatives. This requirement is mandated in the 

U.S. Constitution:

Article I, Section 2; The actual Enumeration shall be made within three Years after the 

first Meeting of the Congress of the United States, and within every subsequent Term of 

ten Years.

Fourteenth Amendment, Section 2; Representatives shall be apportioned among the several States according to their respective numbers, counting the whole number of persons 

in each State. 

The Congressional Act of March 6, 1902, legally established the U.S. Census Bureau as the 

“official” data collector for the United States. Public Law 94-171, enacted in 1975, states the 

Commerce Secretary shall furnish redistricting data tabulations to the states by no later than 

1 year from Census Day (April 1, 2021). The Secretary delegates this task to the Director of 

the Census Bureau and the Census Redistricting & Voting Rights Data Office. States use the 

redistricting data tabulations, provided by the Census Bureau, to define the representative 

boundaries for congressional districts, state legislative districts, school districts, voting precincts, and other types of districts.

Additionally, decennial data are used to enforce voting rights and civil rights legislation. The 

Census Bureau also uses the decennial census results to determine the statistical sampling 

frames for the American Community Survey, which replaced the long form in the decennial 

census and is part of the Decennial Program, and the dozens of current surveys conducted by 

the Census Bureau. The results of these surveys are used to support important government 

functions, such as appropriating federal funds to local communities (an estimated $675 billion annually)1; calculating monthly unemployment, crime, and poverty rates; and publishing 

health and education data. 

1 “Uses of Census Bureau Data in Federal Funds Distribution,” prepared by Marisa Hotchkiss and Jessica Phelan, U.S. Census Bureau, 

Washington, DC, September 2017, <www.census.gov/library/working-papers/2017/decennial/census-data-federal-funds.html>.

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Finally, decennial census data play an increasingly important role in U.S. commerce and the 

economy. As people expand their use of data to make decisions at the local and national 

levels, they increasingly depend on data from the Census Bureau to make these decisions. 

Today, local businesses look at data provided by the Census Bureau on topics like population 

growth and income levels to make decisions about whether or where to locate their restaurants or stores. Similarly, a real estate investor who is considering investing significant funds 

to develop a piece of land in the community relies on Census Bureau data to measure the 

demand for housing, predict future need, and review aggregate trends. Big businesses also 

rely heavily on Census Bureau data to make critical decisions that impact their success and 

shape the economy at the national level. 

The Census Bureau conducted the most automated, modern, and dynamic decennial census 

in history. The 2020 Census included design changes in four key areas (compared to the 2010 

Census), including new methodologies to conduct Address Canvassing, innovative ways of 

optimizing self-response, the use of administrative records and third-party data to reduce the 

Nonresponse Followup workload, and the use of technology to reduce the manual effort and 

improve the productivity of field operations. The primary goal of these design changes was to 

achieve efficiency by: 

• Adding new addresses to the Census Bureau’s address frame using geographic information 

systems and aerial imagery instead of sending Census Bureau employees to walk and physically check 11 million census blocks. 

• Encouraging the population to respond to the 2020 Census using the Internet, reducing the 

need for more expensive paper data capture. 

• Using administrative data the public has already provided to the government and data 

available from commercial sources, allowing realized savings to focus additional visits in 

areas that have traditionally been hard to enumerate. 

• Using sophisticated operational control systems to send Census Bureau employees to follow up with nonresponding housing units and to track daily progress. 

The scope of the 2020 Census included the following:

• The 2020 Census shall cover the 50 states, the District of Columbia, the Commonwealth of 

Puerto Rico, the U.S. Virgin Islands, the Commonwealth of the Northern Mariana Islands, 

Guam, the Pacific Island Area of American Samoa, and Federally Affiliated Americans 

overseas.

• Census Day for the 2020 Census shall be April 1, 2020; have a boundary reference date of 

January 1, 2020; deliver apportionment counts to the President by December 31, 2020; and 

deliver Public Law 94-171 redistricting tabulations to the states by April 1, 2021.

• The 2020 Census concludes upon delivery of all products and the subsequent closeout 

activities ending September 30, 2023. 

THE 2020 CENSUS OPERATIONAL OVERVIEW

The Census Bureau implemented four operational planning categories to count everyone 

once, only once, and in the right place in the 2020 Census. These planning categories include: 

Establish Where to Count, Motivate People to Respond, Count the Population, and Release 

Census Results. High-level descriptions of the operational planning categories are:

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• Establish Where to Count—The first step in conducting the 2020 Census was to identify all 

of the addresses where people could live. To determine all of the addresses where people 

could live, the Census Bureau:

○ Conducted a 100-percent review and update of the nation’s address list.

○ Minimized in-field work with in-office updating.

○ Used multiple data sources to identify areas with address changes.

○ Received input from local governments. 

• Motivate People to Respond—The 2020 Census included a nationwide communications and 

partnership campaign to motivate people to respond to the census. The Census Bureau:

○ Worked with trusted sources to increase participation.

○ Maximized outreach using traditional and new media.

○ Targeted advertisements to specific audiences.

• Count the Population—The 2020 Census collected data from all households, including 

group and unique living arrangements. The 2020 Census:

○ Made it easy for people to respond anytime, anywhere.

○ Encouraged people to use the online response option.

○ Used the most cost-effective strategy to contact and count nonrespondents.

○ Streamlined in-field census taking.

○ Knocked on doors only when necessary.

• Release Census Results—The last step in the 2020 Census was to process and provide the 

2020 Census data. The Census Bureau:

○ Delivered apportionment counts to the President by December 31, 2020.

○ Released counts for redistricting by April 1, 2021.

○ Released 2020 Census data products to data.census.gov, so the public could access 

the data in one location.

THE 2020 CENSUS OPERATIONS

The 2020 Census design comprised 35 operations organized into eight major areas that correspond with the Census Bureau’s standard Work Breakdown Structure. The term operation 

refers to both support and business functions. For example, Program Management is considered a support function, and Address Canvassing was considered a business function. Table 

C-1 provides a high-level purpose statement for each operation. Figure C-1 shows a graphic 

representation of the 35 operations organized into the eight areas described in Table C-1. 

Detailed information on the 2020 Census design and the 35 operations is available on the 

Census Bureau’s Internet site <www.census.gov/programs-surveys/decennial-census/2020 

-census/planning-management/op-plans.html>.

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Table C-1. Operations and Purpose 

Operations Purpose

Program Management

Program Management (PM) Define and implement program management policies, processes, and the control functions for planning and implementing the 2020 Census in order to 

ensure an efficient and well-managed program.

Census/Survey Engineering

Systems Engineering and Integration (SEI) Manage the delivery of a System of Systems that 

meets the 2020 Census.

Program business and capability requirements.

Security, Privacy, and Confidentiality (SPC) Ensure that all operations and systems used in the 

2020 Census adhere to laws, policies, and regulations that ensure appropriate systems and data 

security, and protect respondent and employee 

privacy and confidentiality.

Content and Forms Design (CFD) Identify and finalize content and design of questionnaires and other associated nonquestionnaire 

materials, ensure consistency across data collection modes and operations, and provide the 

optimal design and content of the questionnaires 

to encourage high response rates.

Language Services (LNG) Assess and support language needs of non-English 

speaking populations, determine the number of 

non-English languages and level of support for the 

2020 Census, optimize the non-English content of 

questionnaires and associated nonquestionnaire 

materials across data collection modes and operations, and ensure cultural relevancy and meaningful translation of 2020 Census questionnaires and 

associated nonquestionnaire materials.

Frame

Geographic Programs (GEOP) Provide the geographic foundation in support of 

the 2020 Census data collection and tabulation 

activities, within the Master Address File (MAF)/

Topologically Integrated Geographic Encoding 

and Referencing (TIGER) System. The MAF/TIGER 

System (software applications and databases) 

serves as the national repository for all of the spatial, 

geographic, and residential address data needed for 

census and survey data collection, data tabulation, 

data dissemination, geocoding services, and map 

production. Components of this operation include 

Geographic Delineations, Geographic Partnership 

Programs, and Geographic Data Processing.

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Operations Purpose

Local Update of Census Addresses (LUCA) Provide an opportunity for tribal, state, and local 

governments to review and improve the address 

lists and maps used to conduct the 2020 Census as 

required by Public Law (P.L.) 103-430.

Address Canvassing (ADC) Deliver a complete and accurate address list and 

spatial database for enumeration and determine 

the type and address characteristics for each living 

quarter.

Response Data

Forms Printing and Distribution (FPD) Print and distribute Internet invitation letters, 

reminder cards or letters or both, questionnaire 

mailing packages, and materials for other special 

operations, as required. Other materials required 

to support field operations are handled in the 

Decennial Logistics Management Operation.

Paper Data Capture (PDC) Capture and convert data from the 2020 Census 

paper questionnaires, including mail receipt, document preparation, scanning, Optical Character 

Recognition, Optical Mark Recognition, Key 

From Image, data delivery, checkout, and form 

destruction.

Integrated Partnership and Communications (IPC) Communicate the importance of participating in 

the 2020 Census to the entire population of the 50 

states, the District of Columbia, and Puerto Rico to 

engage and motivate people to self-respond (preferably via the Internet), raise and keep awareness 

high throughout the entire 2020 Census to encourage response, support field recruitment efforts, 

and effectively support dissemination of census 

data to stakeholders and the public.

Internet Self-Response (ISR) Maximize online response to the 2020 Census via 

contact strategies and improved access for respondents and collect response data via the Internet 

to reduce paper and the Nonresponse Followup 

Operation workload.

Non-ID Processing (NID) Make it easy for people to respond anytime, anywhere to increase self-response rates by providing response options that do not require a unique 

Census ID, maximizing real-time matching of 

non-ID respondent addresses to the census living 

quarters address inventory, and accurately assigning nonmatching addresses to census blocks.

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C-6 Data Collection and Processing Procedures

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Operations Purpose

Update Enumerate (UE) Update the address and feature data and enumerate respondents in person. UE is designated 

to occur in areas where the initial visit requires 

enumerating while updating the address frame, in 

particular in remote geographic areas that have 

unique challenges associated with accessibility.

Update Leave (UL) Update the address and feature data and leave a 

choice questionnaire package at every housing unit 

identified to allow the household to self-respond. 

UL occurs in areas where the majority of housing 

units do not have a city-style address to receive 

mail.

Group Quarters (GQ) Enumerate people living or staying in group quarters and provide an opportunity for people experiencing homelessness and receiving service at 

service-based locations, such as soup kitchens, to 

be counted in the census.

Enumeration at Transitory Locations (ETL) Enumerate individuals in occupied units at transitory locations who do not have a usual home 

elsewhere. Transitory locations include recreational 

vehicle parks, campgrounds, racetracks, circuses, 

carnivals, marinas, hotels, and motels.

Census Questionnaire Assistance (CQA) Provide questionnaire assistance for respondents 

by answering questions about specific items on the 

census form or other frequently asked questions 

about the 2020 Census and provide an option for 

respondents to complete a census interview over 

the telephone. Also provide outbound calling support of Coverage Improvement.

Nonresponse Followup (NRFU) Determine housing unit status for nonresponding 

addresses that do not self-respond to the 2020 

Census and enumerate households that are determined to have a housing unit status of occupied.

Response Processing (RPO) Create and distribute the initial 2020 Census enumeration universe, assign the specific enumeration 

strategy for each living quarter based on case status and associated paradata, create and distribute 

workload files required for enumeration operations, 

track case enumeration status, run postdata collection processing actions in preparation for producing the final 2020 Census results, and check for 

suspicious returns.

Federally Affiliated Count Overseas (FACO) Obtain counts by home state of U.S. military and 

federal civilian employees stationed or assigned 

overseas and their dependents living with them.

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Data Collection and Processing Procedures C-7

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Operations Purpose

Publish Data

Data Products and Dissemination (DPD) Prepare and deliver the 2020 Census apportionment data to the President of the United States to 

provide to Congress, tabulate 2020 Census data 

products for use by the states for redistricting, and 

tabulate and disseminate 2020 Census data for use 

by the public.

Redistricting Data (RDP) Provide to each state the legally required Public 

Law 94-171 redistricting data tabulations by the 

mandated deadline of April 1, 2021, 1 year from 

Census Day.

Count Review (CRO) Enhance the accuracy of the 2020 Census through 

remediating potential gaps in coverage by implementing an efficient and equitable process to identify and incorporate housing units that are missing from the Census Bureau Master Address File, 

identify and include or correct large group quarters 

that are missing from the Master Address File or 

geographically misallocated, and position unresolved cases for a smooth transition to the Count 

Question Resolution Operation.

Count Question Resolution (CQR) Provide a mechanism for governmental units to 

challenge their official 2020 Census results.

Archiving (ARC) Coordinate storage of materials and data and 

provide 2020 Census records deemed permanent, 

include files containing individual responses, to 

the National Archives and Records Administration 

and provide similar files to the National Processing 

Center to use as source materials to conduct the 

Age Search Service. Also store data to cover inhouse needs.

Other Censuses

Island Areas Censuses (IAC) Enumerate all residents of American Samoa, the 

Commonwealth of the Northern Mariana Islands, 

Guam, and the U.S. Virgin Islands; process and 

tabulate the collected data; and disseminate data 

products to the public.

Test and Evaluation

Coverage Measurement Design and Estimation 

(CMDE)

Develop the survey design and sample for the 

Post-Enumeration Survey of the 2020 Census and 

produce estimates of census coverage based on 

the Post-Enumeration Survey.

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C-8 Data Collection and Processing Procedures

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Operations Purpose

Coverage Measurement Matching (CMM) Identify matches, nonmatches, and discrepancies between the 2020 Census and the PostEnumeration Survey for both housing units and 

people in the same areas. Both computer and clerical components of matching are conducted.

Coverage Measurement Field Operations (CMFO) Collect person and housing unit information (independent from the 2020 Census operations) for the 

sample of housing units in the Post-Enumeration 

Survey to provide estimates of census net coverage 

error and components of census coverage for the 

United States and Puerto Rico, excluding Remote 

Alaska.

Evaluations and Experiments (EAE) Document how well the 2020 Census was conducted, and analyze, interpret, and synthesize 

the effectiveness of census components and 

their impact on data quality, coverage, or both. 

Assess the 2020 Census operations. Formulate and 

execute an experimentation program to support 

early planning and inform the transition and design 

of the 2030 Census and produce an independent assessment of population and housing unit 

coverage.

Infrastructure

Decennial Service Center (DSC) Support 2020 Census Field operations for decennial staff (i.e., Headquarters, paper data capture 

centers, Regional Census Center, Area Census 

Office, Island Areas Censuses, remote workers, and 

listers/enumerators.)

Field Infrastructure (FLDI) Provide the administrative infrastructure for data 

collection operations covering the 50 states, the 

District of Columbia, and Puerto Rico.

Decennial Logistics Management (DLM) Coordinate space acquisition and lease management for the regional census centers, area census 

offices, and the Puerto Rico area office; provide 

logistics management support services (e.g., kit 

assembly and supplies and interfaces to field staff).

IT Infrastructure (ITIN) Provide the IT-related Infrastructure support to 

the 2020 Census, including enterprise systems and 

applications, 2020 Census-specific applications, 

Field IT infrastructure, mobile computing, and 

cloud computing.

Information on 2020 Census Operational Adjustments can be found on the 2020 Census Internet 

site <https://2020census.gov/en/news-events/operational-adjustments-covid-19.html>.

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 180

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Data Collection and Processing Procedures C-9

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Figure C-1. Operations and Purpose

SUPPORT

Program Management Census/Survey Engineering

1. Program Management 2. Systems Engineering 

(PM) and Integration (SEI)

Infrastructure

3. Security, Privacy, and

Confidentiality (SPC) 

4. Content and

Forms Design (CFD) 5. Language Services

(LNG)

31. Decennial Service

Center (DSC)

FRAME

32. Field Infrastructure

(FLDI)

RESPONSE DATA

33. Decennial Logistics

Management (DLM) 

34. IT Infrastructure

(ITIN)

PUBLISH DATA

6. Geographic Programs

(GEOP)

9. Forms Printing and 

Distribution (FPD)

13. Non-ID Processing

(NID)

17. Census Questionnaire

Assistance (CQA)

21. Data Products and 

Dissemination (DPD)

7. Local Update of 

Census Addresses (LUCA)

10. Paper Data Capture

(PDC)

14. Update Enumerate

(UE)

18. Nonresponse Followup

(NRFU)

22. Redistricting Data

Program (RDP)

8. Address Canvassing 

(ADC)

11. Integrated Partnership

and Communications (IPC) 

15. Group Quarters (GQ) 19. Response Processing

(RPO)

23. Count Review (CRO)

12. Internet Self-Response

(ISR)

16. Enumeration at

Transitory Locations (ETL) 

20. Federally Affiliated

Count Overseas (FACO) 

24. Count Question

Resolution (CQR) 

OTHER CENSUSES TEST AND EVALUATION

35. Update Leave (UL) 25. Archiving (ARC)

26. Island Areas 

Censuses (IAC)

27. Coverage Measurement

Design and Estimation 

(CMDE) 

28. Coverage Measurement 

Matching (CMM)

29. Coverage Measurement 

Field Operations (CMFO)

30. Evaluations and 

Experiments (EAE)

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C-10 Data Collection and Processing Procedures

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

LIST OF STATES SERVICED BY EACH REGIONAL OFFICE

Atlanta

Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South 

Carolina

Chicago Arkansas, Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Wisconsin

Denver

Arizona, Colorado, Kansas, Montana, Nebraska, New Mexico, North 

Dakota, Oklahoma, South Dakota, Texas, Utah, Wyoming

Los Angeles Alaska, California, Hawaii, Idaho, Nevada, Oregon, Washington 

New York

Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New 

York, Puerto Rico, Rhode Island, Vermont

Philadelphia

Delaware, District of Columbia, Kentucky, Maryland, Ohio, Pennsylvania, 

Tennessee, Virginia, West Virginia

For more information, visit <www.census.gov/regions>.

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Questionnaire D-1

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Appendix D.

Questionnaire

Start here

Use a blue or black pen.

Before you answer Question 1, count the people living in this

house, apartment, or mobile home using our guidelines.

• Count all people, including babies, who live and sleep here

most of the time.

1. How many people were living or staying in this house,

apartment, or mobile home on April 1, 2020?

Number of people =

The census must also include people without a permanent

place to live, so:

• If someone who does not have a permanent place to live is

staying here on April 1, 2020, count that person.

The Census Bureau also conducts counts in institutions and

other places, so:

• Do not count anyone living away from here, either at college

or in the Armed Forces.

• Do not count anyone in a nursing home, jail, prison, detention

facility, etc., on April 1, 2020.

• Leave these people off your questionnaire, even if they will

return to live here after they leave college, the nursing home,

the military, jail, etc. Otherwise, they may be counted twice.

FORM DI-Q1(E/S) (05-31-2019)

U.S. DEPARTMENT OF COMMERCE

Economics and Statistics Administration

U.S. CENSUS BUREAU

Para completar el cuestionario en español, dele la vuelta y complete el lado verde.

This is the official questionnaire for this address.

It is quick and easy to respond, and your answers are protected by law.

§,+!.¤

11100013

IJ

Were there any additional people staying here on April 1, 2020

that you did not include in Question 1?

Mark K all that apply.

2.

Children, related or unrelated, such as newborn babies, 

grandchildren, or foster children

Relatives, such as adult children, cousins, or in-laws

Nonrelatives, such as roommates or live-in babysitters

People staying here temporarily

No additional people

3. Is this house, apartment, or mobile home — Mark K IJ ONE box.

Owned by you or someone in this household with a mortgage

or loan? Include home equity loans.

Owned by you or someone in this household free and clear

(without a mortgage or loan)?

Rented?

Occupied without payment of rent?

4. What is your telephone number?

Telephone Number

– –

We will only contact you if needed for official Census Bureau

business.

FOR

OFFICIAL

USE ONLY

• If no one lives and sleeps at this address most of the time, go

online at my2020census.gov or call the number on page 8.

OR go online at my2020census.gov to complete your 2020 Census questionnaire.

OMB No. 0607-1006: Approval Expires 11/30/2021

®

INFORMATIONAL COPY

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D-2 Questionnaire

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

2

What is Person 1’s sex? Mark K IJ ONE box.

Male Female

6.

What is Person 1’s age and what is Person 1’s date of 

birth? For babies less than 1 year old, do not write the age in 

months. Write 0 as the age.

7.

Age on April 1, 2020 Month Day Year of birth

Print numbers in boxes.

Person 1

5. Please provide information for each person living here. If

there is someone living here who pays the rent or owns this

residence, start by listing him or her as Person 1. If the 

owner or the person who pays the rent does not live here, 

start by listing any adult living here as Person 1.

What is Person 1’s name? Print name below.

Last Name(s)

First Name MI

years

➜ If more people were counted in Question 1 on 

the front page, continue with Person 2 on the 

next page.

White – Print, for example, German, Irish, English, Italian, 

Lebanese, Egyptian, etc. C

9.

IJ

What is Person 1’s race? 

Mark K one or more boxes AND print origins.

Black or African Am. – Print, for example, African American, 

Jamaican, Haitian, Nigerian, Ethiopian, Somali, etc. C

American Indian or Alaska Native – Print name of enrolled or 

principal tribe(s), for example, Navajo Nation, Blackfeet Tribe, 

Mayan, Aztec, Native Village of Barrow Inupiat Traditional 

Government, Nome Eskimo Community, etc. C

NOTE: Please answer BOTH Question 8 about Hispanic

origin and Question 9 about race. For this census, Hispanic

origins are not races.

➜

8. Is Person 1 of Hispanic, Latino, or Spanish origin?

No, not of Hispanic, Latino, or Spanish origin

Yes, Mexican, Mexican Am., Chicano

Yes, Puerto Rican

Yes, Cuban

Yes, another Hispanic, Latino, or Spanish origin – Print, for 

example, Salvadoran, Dominican, Colombian, Guatemalan, 

Spaniard, Ecuadorian, etc. C

§,+!6¤

11100021

Some other race – Print race or origin. C

Chinese Vietnamese Native Hawaiian

Other Asian – 

Print, for example, 

Pakistani, Cambodian, 

Hmong, etc. C

Filipino Korean Samoan

Asian Indian Japanese Chamorro

Other Pacific Islander – 

Print, for example, 

Tongan, Fijian, 

Marshallese, etc. C

INFORMATIONAL COPY

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 184

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Questionnaire D-3

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Person 2

3

1. Print name of

Last Name(s)

First Name MI

➜ If more people were counted in Question 1 on 

the front page, continue with Person 3 on the 

next page.

2.

IJ

Does this person usually live or stay somewhere else?

Mark K all that apply.

No

Yes, for college

Yes, for a military assignment Yes, at a seasonal or 

second residence

Yes, for a job or business

Yes, for another reason

Yes, in a jail or prison

Yes, with a parent or 

other relative

Yes, in a nursing home

Male Female

4.

What is this person’s age and what is this person’s date of 

birth? For babies less than 1 year old, do not write the age in 

months. Write 0 as the age.

5.

Print numbers in boxes.

Age on April 1, 2020 Month Day Year of birth

years

What is this person’s sex? Mark IJK ONE box.

Same-sex husband/wife/spouse

Biological son or daughter

Adopted son or daughter

Stepson or stepdaughter

Parent-in-law

Son-in-law or daughter-in-law

Other relative

Roommate or housemate

Foster child

Brother or sister

Same-sex unmarried partner

3.

Other nonrelative

Father or mother

Grandchild

Opposite-sex husband/wife/spouse

Opposite-sex unmarried partner

How is this person related to Person 1? Mark IJK ONE box.

White – Print, for example, German, Irish, English, Italian, 

Lebanese, Egyptian, etc. C

7.

IJ

What is this person’s race? 

Mark K one or more boxes AND print origins.

Black or African Am. – Print, for example, African American, 

Jamaican, Haitian, Nigerian, Ethiopian, Somali, etc. C

American Indian or Alaska Native – Print name of enrolled or 

principal tribe(s), for example, Navajo Nation, Blackfeet Tribe, 

Mayan, Aztec, Native Village of Barrow Inupiat Traditional 

Government, Nome Eskimo Community, etc. C

NOTE: Please answer BOTH Question 6 about Hispanic

origin and Question 7 about race. For this census, Hispanic

origins are not races.

➜

No, not of Hispanic, Latino, or Spanish origin

6. Is this person of Hispanic, Latino, or Spanish origin?

Yes, Mexican, Mexican Am., Chicano

Yes, Puerto Rican

Yes, Cuban

Yes, another Hispanic, Latino, or Spanish origin – Print, for 

example, Salvadoran, Dominican, Colombian, Guatemalan, 

Spaniard, Ecuadorian, etc. C

§,+!H¤

11100039

Some other race – Print race or origin. C

Chinese Vietnamese Native Hawaiian

Other Asian – 

Print, for example, 

Pakistani, Cambodian, 

Hmong, etc. C

Filipino Korean Samoan

Asian Indian Japanese Chamorro

Other Pacific Islander – 

Print, for example, 

Tongan, Fijian, 

Marshallese, etc. C

INFORMATIONAL COPY

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D-4 Questionnaire

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

1. Print name of Person 3

Last Name(s)

First Name MI

4

➜ If more people were counted in Question 1 on 

the front page, continue with Person 4 on the 

next page.

2.

IJ

Does this person usually live or stay somewhere else?

Mark K all that apply.

No

Yes, for college

Yes, for a military assignment Yes, at a seasonal or 

second residence

Yes, for a job or business

Yes, for another reason

Yes, in a jail or prison

Yes, with a parent or 

other relative

Yes, in a nursing home

Male Female

4.

What is this person’s age and what is this person’s date of 

birth? For babies less than 1 year old, do not write the age in 

months. Write 0 as the age.

5.

Print numbers in boxes.

Age on April 1, 2020 Month Day Year of birth

years

What is this person’s sex? Mark IJK ONE box.

Same-sex husband/wife/spouse

Biological son or daughter

Adopted son or daughter

Stepson or stepdaughter

Parent-in-law

Son-in-law or daughter-in-law

Other relative

Roommate or housemate

Foster child

Brother or sister

Same-sex unmarried partner

3.

Other nonrelative

Father or mother

Grandchild

Opposite-sex husband/wife/spouse

Opposite-sex unmarried partner

How is this person related to Person 1? Mark IJK ONE box.

White – Print, for example, German, Irish, English, Italian, 

Lebanese, Egyptian, etc. C

7.

IJ

What is this person’s race? 

Mark K one or more boxes AND print origins.

Black or African Am. – Print, for example, African American, 

Jamaican, Haitian, Nigerian, Ethiopian, Somali, etc. C

American Indian or Alaska Native – Print name of enrolled or 

principal tribe(s), for example, Navajo Nation, Blackfeet Tribe, 

Mayan, Aztec, Native Village of Barrow Inupiat Traditional 

Government, Nome Eskimo Community, etc. C

NOTE: Please answer BOTH Question 6 about Hispanic

origin and Question 7 about race. For this census, Hispanic

origins are not races.

➜

No, not of Hispanic, Latino, or Spanish origin

6. Is this person of Hispanic, Latino, or Spanish origin?

Yes, Mexican, Mexican Am., Chicano

Yes, Puerto Rican

Yes, Cuban

Yes, another Hispanic, Latino, or Spanish origin – Print, for 

example, Salvadoran, Dominican, Colombian, Guatemalan, 

Spaniard, Ecuadorian, etc. C

§,+!P¤

11100047

Some other race – Print race or origin. C

Chinese Vietnamese Native Hawaiian

Other Asian – 

Print, for example, 

Pakistani, Cambodian, 

Hmong, etc. C

Filipino Korean Samoan

Asian Indian Japanese Chamorro

Other Pacific Islander – 

Print, for example, 

Tongan, Fijian, 

Marshallese, etc. C

INFORMATIONAL COPY

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Questionnaire D-5

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Person 4

5

1. Print name of

Last Name(s)

First Name MI

➜ If more people were counted in Question 1 on

the front page, continue with Person 5 on the

next page.

2.

IJ

Does this person usually live or stay somewhere else?

Mark K all that apply.

No

Yes, for college

Yes, for a military assignment Yes, at a seasonal or 

second residence

Yes, for a job or business

Yes, for another reason

Yes, in a jail or prison

Yes, with a parent or 

other relative

Yes, in a nursing home

Male Female

4.

What is this person’s age and what is this person’s date of 

birth? For babies less than 1 year old, do not write the age in 

months. Write 0 as the age.

5.

Print numbers in boxes.

Age on April 1, 2020 Month Day Year of birth

years

What is this person’s sex? Mark IJK ONE box.

Same-sex husband/wife/spouse

Biological son or daughter

Adopted son or daughter

Stepson or stepdaughter

Parent-in-law

Son-in-law or daughter-in-law

Other relative

Roommate or housemate

Foster child

Brother or sister

Same-sex unmarried partner

3.

Other nonrelative

Father or mother

Grandchild

Opposite-sex husband/wife/spouse

Opposite-sex unmarried partner

How is this person related to Person 1? Mark IJK ONE box.

White – Print, for example, German, Irish, English, Italian, 

Lebanese, Egyptian, etc. C

7.

IJ

What is this person’s race? 

Mark K one or more boxes AND print origins.

Black or African Am. – Print, for example, African American, 

Jamaican, Haitian, Nigerian, Ethiopian, Somali, etc. C

American Indian or Alaska Native – Print name of enrolled or 

principal tribe(s), for example, Navajo Nation, Blackfeet Tribe, 

Mayan, Aztec, Native Village of Barrow Inupiat Traditional 

Government, Nome Eskimo Community, etc. C

NOTE: Please answer BOTH Question 6 about Hispanic

origin and Question 7 about race. For this census, Hispanic

origins are not races.

➜

No, not of Hispanic, Latino, or Spanish origin

6. Is this person of Hispanic, Latino, or Spanish origin?

Yes, Mexican, Mexican Am., Chicano

Yes, Puerto Rican

Yes, Cuban

Yes, another Hispanic, Latino, or Spanish origin – Print, for 

example, Salvadoran, Dominican, Colombian, Guatemalan, 

Spaniard, Ecuadorian, etc. C

§,+!W¤

11100054

Some other race – Print race or origin. C

Chinese Vietnamese Native Hawaiian

Other Asian – 

Print, for example, 

Pakistani, Cambodian, 

Hmong, etc. C

Filipino Korean Samoan

Asian Indian Japanese Chamorro

Other Pacific Islander – 

Print, for example, 

Tongan, Fijian, 

Marshallese, etc. C

INFORMATIONAL COPY

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 187

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D-6 Questionnaire

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

1. Print name of Person 5

Last Name(s)

First Name MI

6

➜ If more people were counted in Question 1 on 

the front page, continue with Person 6 on the 

next page.

2.

IJ

Does this person usually live or stay somewhere else?

Mark K all that apply.

No

Yes, for college

Yes, for a military assignment Yes, at a seasonal or 

second residence

Yes, for a job or business

Yes, for another reason

Yes, in a jail or prison

Yes, with a parent or 

other relative

Yes, in a nursing home

Male Female

4.

What is this person’s age and what is this person’s date of 

birth? For babies less than 1 year old, do not write the age in 

months. Write 0 as the age.

5.

Print numbers in boxes.

Age on April 1, 2020 Month Day Year of birth

years

What is this person’s sex? Mark IJK ONE box.

Same-sex husband/wife/spouse

Biological son or daughter

Adopted son or daughter

Stepson or stepdaughter

Parent-in-law

Son-in-law or daughter-in-law

Other relative

Roommate or housemate

Foster child

Brother or sister

Same-sex unmarried partner

3.

Other nonrelative

Father or mother

Grandchild

Opposite-sex husband/wife/spouse

Opposite-sex unmarried partner

How is this person related to Person 1? Mark IJK ONE box.

White – Print, for example, German, Irish, English, Italian, 

Lebanese, Egyptian, etc. C

7.

IJ

What is this person’s race? 

Mark K one or more boxes AND print origins.

Black or African Am. – Print, for example, African American, 

Jamaican, Haitian, Nigerian, Ethiopian, Somali, etc. C

American Indian or Alaska Native – Print name of enrolled or 

principal tribe(s), for example, Navajo Nation, Blackfeet Tribe, 

Mayan, Aztec, Native Village of Barrow Inupiat Traditional 

Government, Nome Eskimo Community, etc. C

NOTE: Please answer BOTH Question 6 about Hispanic

origin and Question 7 about race. For this census, Hispanic

origins are not races.

➜

No, not of Hispanic, Latino, or Spanish origin

6. Is this person of Hispanic, Latino, or Spanish origin?

Yes, Mexican, Mexican Am., Chicano

Yes, Puerto Rican

Yes, Cuban

Yes, another Hispanic, Latino, or Spanish origin – Print, for 

example, Salvadoran, Dominican, Colombian, Guatemalan, 

Spaniard, Ecuadorian, etc. C

§,+!_¤

11100062

Some other race – Print race or origin. C

Chinese Vietnamese Native Hawaiian

Other Asian – 

Print, for example, 

Pakistani, Cambodian, 

Hmong, etc. C

Filipino Korean Samoan

Asian Indian Japanese Chamorro

Other Pacific Islander – 

Print, for example, 

Tongan, Fijian, 

Marshallese, etc. C

INFORMATIONAL COPY

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 188

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Questionnaire D-7

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Person 6

7

1. Print name of

Last Name(s)

First Name MI

➜ If more people were counted in Question 1 on 

the front page, continue with Person 7 on the 

next page.

2.

IJ

Does this person usually live or stay somewhere else?

Mark K all that apply.

No

Yes, for college

Yes, for a military assignment Yes, at a seasonal or 

second residence

Yes, for a job or business

Yes, for another reason

Yes, in a jail or prison

Yes, with a parent or 

other relative

Yes, in a nursing home

Male Female

4.

What is this person’s age and what is this person’s date of 

birth? For babies less than 1 year old, do not write the age in 

months. Write 0 as the age.

5.

Print numbers in boxes.

Age on April 1, 2020 Month Day Year of birth

years

What is this person’s sex? Mark IJK ONE box.

Same-sex husband/wife/spouse

Biological son or daughter

Adopted son or daughter

Stepson or stepdaughter

Parent-in-law

Son-in-law or daughter-in-law

Other relative

Roommate or housemate

Foster child

Brother or sister

Same-sex unmarried partner

3.

Other nonrelative

Father or mother

Grandchild

Opposite-sex husband/wife/spouse

Opposite-sex unmarried partner

How is this person related to Person 1? Mark K IJ ONE box.

White – Print, for example, German, Irish, English, Italian, 

Lebanese, Egyptian, etc. C

7.

IJ

What is this person’s race? 

Mark K one or more boxes AND print origins.

Black or African Am. – Print, for example, African American, 

Jamaican, Haitian, Nigerian, Ethiopian, Somali, etc. C

American Indian or Alaska Native – Print name of enrolled or 

principal tribe(s), for example, Navajo Nation, Blackfeet Tribe, 

Mayan, Aztec, Native Village of Barrow Inupiat Traditional 

Government, Nome Eskimo Community, etc. C

NOTE: Please answer BOTH Question 6 about Hispanic

origin and Question 7 about race. For this census, Hispanic

origins are not races.

➜

No, not of Hispanic, Latino, or Spanish origin

6. Is this person of Hispanic, Latino, or Spanish origin?

Yes, Mexican, Mexican Am., Chicano

Yes, Puerto Rican

Yes, Cuban

Yes, another Hispanic, Latino, or Spanish origin – Print, for 

example, Salvadoran, Dominican, Colombian, Guatemalan, 

Spaniard, Ecuadorian, etc. C

§,+!g¤

11100070

Some other race – Print race or origin. C

Chinese Vietnamese Native Hawaiian

Other Asian – 

Print, for example, 

Pakistani, Cambodian, 

Hmong, etc. C

Filipino Korean Samoan

Asian Indian Japanese Chamorro

Other Pacific Islander – 

Print, for example, 

Tongan, Fijian, 

Marshallese, etc. C

INFORMATIONAL COPY

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D-8 Questionnaire

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

8

Person 10

First Name MI

Sex Age on April 1, 2020 Month Day Year of birth

Date of Birth

Related to Person 1?

Male Female Yes No

FOR OFFICIAL USE ONLY

JIC1 JIC2

Person 9

Person 8

Person 7

Age on April 1, 2020 Month Day Year of birth

First Name MI Last Name(s)

Sex

Date of Birth

Related to Person 1?

Use this section to complete information for the rest of the people you counted in Question 1 on the front page.

We may call for additional information about them.

First Name MI

First Name MI

Male Female Yes No

Sex Age on April 1, 2020 Month Day Year of birth

Date of Birth

Related to Person 1?

Male Female Yes No

Sex Age on April 1, 2020 Month Day Year of birth

Date of Birth

Related to Person 1?

Male Female Yes No

years

Last Name(s)

years

Last Name(s)

years

Last Name(s)

years

U.S. Census Bureau

[Address Removed]

If your enclosed postage-paid envelope is missing, 

please mail your completed questionnaire to:

If you need help completing this questionnaire, call toll-free 1-844-330-2020, Sunday through Saturday from 7:00 a.m. to 2:00 a.m. ET.

TDD — Telephone display device for the hearing impaired. Call toll-free 1-844-467-2020, Sunday through Saturday from 7:00 a.m. to 2:00 a.m. ET.

Thank you for completing your 2020 Census questionnaire.

§,+!y¤

11100088

The U.S. Census Bureau estimates that completing the questionnaire will take 10 minutes on average. Send comments regarding this burden estimate or any other aspect 

of this burden to: Paperwork Reduction Project 0607-1006, U.S. Census Bureau, DCMD-2H174, 4600 Silver Hill Road, Washington, DC 20233. You may email comments 

to <2020.census.paperwork@census.gov>. Use “Paperwork Reduction Project 0607-1006” as the subject.

This collection of information has been approved by the Office of Management and Budget (OMB). The eight-digit OMB approval number 0607-1006 confirms this

approval. If this number were not displayed, we could not conduct the census.

INFORMATIONAL COPY

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Maps E-1

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

Appendix E.

Maps

CONTENTS

Introduction ...................................................................... E-1

Map Descriptions .................................................................. E-1

P.L. 94–171 County Block Map (2020 Census) ..................................... E-1

P.L. 94–171 State Legislative District With Voting Districts Reference (SLD/VTD) 

Map (2020 Census) ........................................................... E-2

2020 Census—Census Tract Reference Map ....................................... E-2

2020 Census—School District Reference Map ...................................... E-2

INTRODUCTION

There are four map types that support the 2020 Census Redistricting Data (Public Law 

94-171) program. Each of these large format reference map types are produced in Adobe’s 

portable document format (PDF). These georeferenced PDF files are available through the 

U.S. Census Bureau’s Map Products Internet site, linked through data.census.gov, and as 

state-based removable media products provided to official recipients. In addition to the maps, 

other geographic products include the State Redistricting Data (P.L. 94-171) Shapefiles, the 

2020 Census Block Assignment Files with corresponding name lookup tables (which provide 

census block relationships to voting districts, state legislative districts, school districts, and 

congressional districts), and the 2020 Census Block Relationship files (provides comparison of 

2010 census blocks to 2020 census blocks).

MAP DESCRIPTIONS

P.L. 94-171 County Block Map (2020 Census)

These large-scale maps show the boundaries and numbers for all census blocks within a 

county. In addition to state and county, these maps show the boundaries, names, and codes 

for American Indian areas, Alaska Native areas, Hawaiian home lands, county subdivisions, 

places, and census tracts. These maps also show and label state legislative districts and voting 

districts—the geographic entities that the states submitted during their participation in the 

early phases of the 2020 Census Redistricting Data Program. The P.L. 94-171 county block 

maps also show and label base features, such as roads, railroads, and hydrography. The intent 

of this series is to map each county on the fewest number of map sheets possible and at the 

maximum practical scale, depending on the size and shape of the county and the density of 

the tabulation census blocks patterns. Census block pattern density affects the display of 

census block numbers and feature identifiers. Each county will be covered by one or more 

parent map sheets at a single scale. Inset map sheets at larger scales are created as required 

to show the map content described above. An index map showing the sheet configuration is 

created for all counties requiring more than one parent map sheet. The map sheet size is 36 

by 32 inches.

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E-2 Maps

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

P.L. 94-171 State Legislative District With Voting Districts (SLD/VTD) Reference Map (2020 

Census)

These state legislative district-based reference maps show and label the state legislative 

districts and voting districts, the geographic entities that the states submitted during their 

participation in the early phases of the Census Redistricting Data Program. Two separate map 

types make up this series: one that displays State Legislative Districts—Upper Chamber and 

one that displays the State Legislative Districts—Lower Chamber. Each of these maps shows 

the extent of the subject SLD, as well as the surrounding SLDs of the same type. In addition to 

SLDs and VTDs,these maps also show and label American Indian reservations, Alaska Native 

areas, Hawaiian home lands, counties, county subdivisions (in states where they function as 

governmental units), and places. Additionally, these maps display a base feature network 

including roads, railroads, and water bodies. These features are labeled as map scale permits. 

The map sheet configuration is optimized to keep the number of map sheets for each SLD 

to a minimum. Each SLD will be covered by one or more parent map sheets at a single scale. 

Inset map sheets at larger scales are created as required to show the map content described 

above. An index map showing the sheet configuration is created for all SLDs requiring more 

than one parent map sheet. The map sheet size is 36 by 32 inches.

2020 Census—Census Tract Reference Map

These county-based reference maps show and label the census tracts as delineated to support 2020 Census data dissemination. These maps also show and label American Indian reservations, Alaska Native areas, Hawaiian home lands, counties, county subdivisions (in states 

where they function as governmental units), and places. Additionally, these maps display a 

base feature network including roads, railroads, and water bodies. The map sheet configuration is optimized to keep the number of map sheets for each county to a minimum. Each 

county will be covered by one or more parent map sheets at a single scale. Inset map sheets 

at larger scales are created where there are clusters of census tracts that cannot be identified at the parent map scale. An index map showing the sheet configuration is created for all 

counties requiring more than one parent map sheet. The map sheet size is 36 by 32 inches.

2020 Census—School District Reference Map

These reference maps show and label the unified, secondary, and elementary school districts 

as delineated by the state participants of the School District Review Program. These countybased maps also show and label states, counties, and places. Additionally, these maps display 

a base feature network including roads and water bodies. Major highways and selected water 

bodies are labeled. Each county will be covered by one or more parent map sheets at a single 

scale. Inset map sheets at larger scales are created where there are clusters of school districts 

that cannot be identified at the parent map scale. An index map showing the sheet configuration is created for all counties requiring more than one parent map sheet. For states and 

state-equivalents, including the District of Columbia, Florida, Hawaii, Maryland, Nevada, and 

West Virginia, where school districts are coextensive with counties, a state-based map identifying the counties and corresponding school districts is produced. The map sheet size is 36 by 

32 inches.

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Hispanic Origin and Race Code List F-1

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Appendix F.

Hispanic Origin and Race Code List

WHITE 1000-1999

White 1000-1009

White (Checkbox) 1000

White 1001

EUROPEAN (EXCEPT SPANISH) 1010-1749

Albanian 1010-1014

Albanian 1010

Alsatian 1015-1019

Alsatian 1015

Andorran 1020-1024

Andorran 1020

Armenian 1025-1029

Armenian 1025

Austrian 1030-1034

Austrian 1030

Tyrolean 1031

Azerbaijani 1035-1039

Azerbaijani 1035

Basque 1040-1044

Basque 1040

French Basque 1041

Belarusian 1045-1049

Belarusian 1045

Belgian 1050-1054

Belgian 1050

Fleming 1051

Bosnian and Herzegovinian 1055-1059

Bosnian and Herzegovinian 1055

Bulgarian 1060-1064

Bulgarian 1060

British 1065-1069

British 1065

British Islander 1070-1074

British Islander 1070

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F-2 Hispanic Origin and Race Code List

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Channel Islander 1071

Gibraltarian 1072

Carpatho Rusyn 1075-1079

Carpatho Rusyn 1075

Rusnak 1076

Ruthenian 1077

Celtic 1080-1084

Celtic 1080

Cornish 1085-1089

Cornish 1085

Croatian 1090-1094

Croatian 1090

Cypriot 1095-1099

Cypriot 1095

Turkish Cypriote 1096

Czech 1100-1104

Czech 1100

Bohemian 1101

Moravian 1102

Czechoslovakian 1105-1109

Czechoslovakian 1105

Danish 1110-1114

Danish 1110

Dutch 1115-1119

Dutch 1115

English 1120-1124

English 1121

Estonian 1125-1129

Estonian 1125

European 1130-1139

European 1130

Central European 1131

Eastern European 1132

Mediterranean 1133

Northern European 1134

Western European 1135

European, Not Elsewhere Classified 1139

Faroe Islander 1140-1144

Faroe Islander 1140

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Hispanic Origin and Race Code List F-3

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Finnish 1145-1149

Finnish 1145

Finno Ugrian 1150-1154

Finno Ugrian 1150

French 1155-1159

French 1156

Corsican 1157

Frisian 1160–1164

Frisian 1160

Georgian CIS 1165–1169

Georgian CIS 1165

German 1170-1179

German 1171

Bavarian 1172

Prussian 1173

Saxon 1174

German from Russia 1175

Germanic 1180-1184

Germanic 1180

Greek 1185-1189

Greek 1185

Hungarian 1190-1194

Hungarian 1190

Icelandic 1195-1199

Icelandic 1195

Irish 1200-1204

Irish 1201

Italian 1205-1209

Italian 1206

Sardinian 1207

Sicilian 1208

Kosovan 1210-1214

Kosovan 1210

Lapp 1215-1219

Lapp 1215

Latvian 1220–1224

Latvian 1220

Liechtensteiner 1225-1229

Liechtensteiner 1225

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F-4 Hispanic Origin and Race Code List

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Lithuanian 1230-1234

Lithuanian 1230

Luxembourger 1235-1239

Luxembourger 1235

Macedonian 1240-1244

Macedonian 1240

Maltese 1245-1249

Maltese 1245

Manx 1250-1254

Manx 1250

Moldovan 1255-1259

Moldovan 1255

Monegasque 1260-1264

Monegasque 1260

Montenegrin 1265-1269

Montenegrin 1265

North Caucasian 1270-1274

North Caucasian 1270

Northern Irelander 1275-1279

Northern Irelander 1275

Norwegian 1280-1284

Norwegian 1280

Polish 1285-1289

Polish 1286

Portuguese 1290-1294

Portuguese 1290

Azores Islander 1291

Madeiran 1292

Roma 1295-1299

Roma 1295

Romanian 1300-1304

Romanian 1300

Vlach 1301

Russian 1305-1309

Russian 1305

Scandinavian 1310-1314

Scandinavian 1310

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Hispanic Origin and Race Code List F-5

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Nordic 1311

Viking 1312

Scots-Irish 1315-1319

Scots-Irish 1315

Scottish 1320-1324

Scottish 1320

Serbian 1325-1329

Serbian 1325

Siberian 1330-1334

Siberian 1330

Slavic 1335-1339

Slavic 1335

Sorb 1336

Slovak 1340-1344

Slovak 1340

Slovenian 1345-1349

Slovenian 1345

Soviet Union 1350-1354

Soviet Union 1350

Swedish 1355-1359

Swedish 1355

Swiss 1360-1364

Swiss 1360

Tatar 1365-1369

Tatar 1365

Turkish 1370-1374

Turkish 1370

Ukrainian 1375-1384

Ukrainian 1375

Welsh 1385-1389

Welsh 1385

Yugoslavian 1390-1394

Yugoslavian 1390

OTHER WHITE 1750-1849

Afrikaner 1750-1754

Afrikaner 1750

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F-6 Hispanic Origin and Race Code List

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Australian 1755-1759

Australian 1755

Cajun 1760-1764

Cajun 1760

Canadian 1765-1769

Canadian 1765

Caucasian 1770-1774

Caucasian 1770

French Canadian 1775-1779

French Canadian 1775

Greenlandic 1780-1784

Greenlandic 1780

New Zealander 1785-1789

New Zealander 1785

Pennsylvania German 1790-1794

Pennsylvania German 1790

Turkic (White Turkic) 1795-1799

Other White Responses 1840-1849

Anglo 1840

White Responses, Not Elsewhere Classified 1849

HISPANIC, LATINO, OR SPANISH1 2000-2999

Hispanic, Latino, or Spanish 2000-2009

Hispanic, Latino, or Spanish (Checkbox) 2000

Hispanic, Latino, or Spanish (Write-in) 2001

Hispanic 2002

MEXICAN 2010-2099

Mexican 2010-2019

Yes, Mexican, Mexican Am., Chicano (Detailed Checkbox) 2010

Mexican 2011

Mexican American 2020-2029

Mexican American 2020

Chicano(a) 2030-2039

Chicano(a) 2030

La Raza 2040-2049

La Raza 2040

1 Responses in the Hispanic, Latino, or Spanish code range (2000–2999) are tabulated as Hispanic when reported in the 

Hispanic origin question. Responses in the 1000–1999 or 3000–8999 code range are considered Not Hispanic when reported in 

the Hispanic origin question. When reported in the race question, responses in the Hispanic, Latino, or Spanish code range are 

tabulated as Some Other Race.

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Hispanic Origin and Race Code List F-7

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Mexican Geography 2050-2054

Mexican Geography 2050

Mexican Indian 2055-2099

CENTRAL AMERICAN 2100-2199

Costa Rican 2100-2109

Costa Rican 2100

Guatemalan 2110-2119

Guatemalan 2110

Honduran 2120-2129

Honduran 2120

Nicaraguan 2130-2139

Nicaraguan 2130

Panamanian 2140-2149

Panamanian 2140

Canal Zone 2141

Salvadoran 2150-2159

Salvadoran 2151

Central American 2160-2199

Central American 2160

SOUTH AMERICAN 2200-2299

Argentinean 2200-2209

Argentinean 2200

Bolivian 2210-2219

Bolivian 2210

Chilean 2220-2229

Chilean 2220

Colombian 2230-2239

Colombian 2231

Ecuadorian 2240-2249

Ecuadorian 2240

Paraguayan 2250-2259

Paraguayan 2250

Peruvian 2260-2269

Peruvian 2260

Uruguayan 2270-2274

Uruguayan 2270

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F-8 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Venezuelan 2275-2279

Venezuelan 2275

South American 2280-2299

South American 2280

CARIBBEAN 2300-2399

Caribbean Hispanic 2300-2309

Caribbean Hispanic 2300

Cuban 2310-2319

Yes, Cuban (Detailed Checkbox) 2310

Cuban 2311

Dominican 2320-2329

Dominican 2321

Puerto Rican 2330-2339

Yes, Puerto Rican (Detailed Checkbox) 2330

Puerto Rican 2331

EUROPEAN (SPANIARD) 2400-2499

Spaniard 2400-2409

Spaniard 2400

Andalusian 2410-2419

Andalusian 2410

Asturian 2420-2429

Asturian 2420

Castillian 2430-2439

Castillian 2430

Catalan(a) 2440-2449

Catalan(a) 2440

Balearic Islander 2450-2459

Balearic Islander 2450

Gallego(a) 2460-2469

Gallego(a) 2460

Valencian 2470-2479

Valencian 2470

Canarian 2480-2489

Canarian 2480

Spanish Basque 2490-2499

Spanish Basque 2490

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Hispanic Origin and Race Code List F-9

2020 Census State Redistricting (Public Law 94-171) Summary File 

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AFRO DESCENDENT2 2500-2599

Afro Latino(a) 2500-2509

Afro Latino(a) 2500

Garifuna 2510-2519

Garifuna 2510

OTHER HISPANIC/SPANISH 2600-2799

Latin American 2600-2609

Latin American 2600

Latin 2610-2619

Latin 2610

Latino(a) 2620-2629

Latino(a) 2620

Latinx 2621

Spanish 2630-2639

Spanish 2630

Californio 2640-2649

Californio 2640

Tejano(a) 2650-2659

Tejano(a) 2650

Nuevo Mexicano(a) 2660-2669

Nuevo Mexicano(a) 2660

Spanish American 2670-2689

Spanish American 2670

Mesoamerican Indian (Hispanic) 2690-2699

Mesoamerican Indian (Hispanic) 2690

Other Hispanic Responses 2790-2799

Yes, another Hispanic, Latino, or Spanish origin (Checkbox) 2790

Mestizo(a) 2791

Hispanic Responses, Not Elsewhere Classified 2799

BLACK OR AFRICAN AMERICAN 3000-3999

Black or African American 3000-3009

Black or African Am. (Checkbox) 3000

Black or African American (Write-in) 3001

2 If a response of “Afro-Latino” (2500) or “Garifuna” (2510) is reported in the Hispanic origin question, it is tabulated 

as Hispanic. If a response of “Afro-Latino” or “Garifuna” is reported in the race question, it is tabulated as Black or African 

American and Some Other Race.

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F-10 Hispanic Origin and Race Code List

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MAJOR UNITED STATES TERMS 3010-3099

African American 3010-3014

African American 3011

Afro-American 3015-3019

Afro-American 3015

Afro 3016

Black 3020-3024

Black 3020

Negro 3025-3029

Negro 3025

Nigritian 3030-3034

Nigritian 3030

NATIONALITIES/REGIONAL TERMS—SUB-SAHARAN AFRICA 3100-3404

African 3100-3104

African 3100

Angolan 3105-3109

Angolan 3105

Beninese 3110-3114

Beninese (formerly Dahomey) 3110

Bisseau-Guinean 3115-3119

Bisseau-Guinean 3115

Burkinabe 3120-3124

Burkinabe (Burkina Faso; formerly the Republic of Upper Volta) 3120

Burundian 3125-3129

Burundian 3125

Cameroonian 3130-3134

Cameroonian 3130

Central African 3135-3139

Central African (Central African Republic) 3135

Chadian 3140-3144

Chadian 3140

Congolese 3145-3149

Congolese (Democratic Republic of the Congo [formerly Zaire]) 3145

Djiboutian 3150-3154

Djiboutian 3150

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Hispanic Origin and Race Code List F-11

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Equatorial Guinean 3155-3159

Equatorial Guinean 3155

Eritrean 3160-3164

Eritrean 3160

Ethiopian 3165-3169

Ethiopian 3166

Gabonese 3170-3174

Gabonese 3170

Gambian 3175-3179

Gambian 3175

Ghanaian 3180-3184

Ghanaian 3180

Guinean 3185-3189

Guinean 3185

Ivoirian 3190-3194

Ivoirian 3190

Kenyan 3195-3199

Kenyan 3195

Liberian 3200-3204

Liberian 3200

Malagasy 3205-3209

Malagasy 3205

Malawian 3210-3214

Malawian 3210

Malian 3215-3219

Malian 3215

Motswana 3220-3224

Motswana (Botswana) 3220

Mozambican 3225-3229

Mozambican 3225

Namibian 3230-3234

Namibian 3230

Nigerian 3235-3244

Nigerian (Nigeria) 3236

Yoruba 3237

Igbo 3238

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F-12 Hispanic Origin and Race Code List

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Nigerien 3245-3249

Nigerien (Niger) 3245

Rwandan 3250-3254

Rwandan 3250

Senegalese 3255-3259

Senegalese 3255

Sierra Leonean 3260-3264

Sierra Leonean 3260

Somali 3265-3269

Somali 3266

South African 3270-3274

South African 3270

South Sudanese 3275-3279

South Sudanese 3275

Sudanese 3280-3284

Sudanese 3280

Swazi 3285-3289

Swazi 3285

Tanzanian 3290-3294

Tanzanian 3290

Togolese 3295-3299

Togolese 3295

Ugandan 3300-3304

Ugandan 3300

Zambian 3305-3309

Zambian 3305

Zimbabwean 3310-3314

Zimbabwean 3310

Other Sub-Saharan African Responses 3400-3404

Fulani 3400

Sub-Saharan African Responses, Not Elsewhere Classified 3404

NATIONALITIES/REGIONAL TERMS—THE CARIBBEAN 3405-3704

Anguillan 3405-3409

Anguillan 3405

Antiguan and Barbudan 3410-3414

Antiguan and Barbudan 3410

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Hispanic Origin and Race Code List F-13

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Bahamian 3415-3419

Bahamian 3415

Barbadian 3420-3424

Barbadian 3420

British Virgin Islander 3425-3429

British Virgin Islander 3425

Dominica Islander 3430-3434

Dominica Islander 3430

Grenadian 3435-3439

Grenadian 3435

Haitian 3440-3444

Haitian 3441

Jamaican 3445-3449

Jamaican 3446

Kittian and Nevisian 3450-3454

Kittian and Nevisian 3450

Montserratian 3455-3459

Montserratian 3455

St. Lucian 3460-3464

St. Lucian 3460

Trinidadian and Tobagonian 3465-3469

Trinidadian and Tobagonian 3465

U.S. Virgin Islander 3470-3474

U.S. Virgin Islander 3470

St. Thomas Islander 3471

St. Croix Islander 3472

Vincentian 3475-3479

Vincentian 3475

West Indian 3480-3484

West Indian 3480

Other Caribbean Responses 3700-3704

Caribbean Responses, Not Elsewhere Classified 3704

OTHER BLACK OR AFRICAN AMERICAN RESPONSES 3705-3999

Other Black or African American Responses 3705-3709

Black ethnic group, Not Elsewhere Classified 3709

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F-14 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

ASIAN 4000-4999

Asian 4000-4009

Asian (Checkbox) 4000

Asian 4001

EAST ASIAN 4010-4099

East Asian 4010-4019

East Asian 4010

Chinese 4020-4039

Chinese (Detailed Checkbox) 4020

Chinese 4021

Hakka 4022

Han 4023

Hong Kong 4024

Macanese 4025

Tibetan 4026

Japanese 4040-4049

Japanese (Detailed Checkbox) 4040

Japanese 4041

Okinawan 4042

Iwo Jiman 4043

Korean 4050-4059

Korean (Detailed Checkbox) 4050

Korean 4051

Mongolian 4060-4069

Mongolian 4060

Taiwanese 4070-4079

Taiwanese 4070

Hmong 4080-4089

Hmong 4080

CENTRAL ASIAN 4100-4199

Central Asian 4100-4109

Central Asian 4100

Kazakh 4110-4119

Kazakh 4110

Kyrgyz 4120-4129

Kyrgyz 4120

Tajik 4130-4139

Tajik 4130

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Hispanic Origin and Race Code List F-15

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Turkmen 4140-4149

Turkmen 4140

Uzbek 4150-4159

Uzbek 4150

Afghan 4160-4169

Afghan 4160

SOUTH ASIAN 4200-4399

South Asian 4200-4209

South Asian 4200

Asian Indian 4220-4239

Asian Indian (Detailed Checkbox) 4220

Asian Indian 4221

Bengali 4223

Punjabi 4224

Bangladeshi 4240-4259

Bangladeshi 4240

Bhutanese 4260-4269

Bhutanese 4260

Maldivian 4270-4279

Maldivian 4270

Nepalese 4280-4289

Nepalese 4280

Pakistani 4290-4304

Pakistani 4290

Sikh 4305-4309

Sikh 4305

Sindhi 4310-4319

Sindhi 4310

Sri Lankan 4320-4329

Sri Lankan 4320

SOUTHEAST ASIAN 4400-4599

Southeast Asian 4400-4409

Southeast Asian 4400

Bruneian 4410-4419

Bruneian 4410

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F-16 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Burmese 4420-4439

Burmese 4420

Cambodian 4440-4449

Cambodian 4440

Khmer 4441

Filipino 4450-4459

Filipino (Detailed Checkbox) 4450

Filipino 4451

Indonesian 4460-4469

Indonesian 4460

Laotian 4470-4479

Laotian 4470

Malaysian 4480-4489

Malaysian 4480

Mien 4490-4499

Mien 4490

Singaporean 4500-4509

Singaporean 4500

Thai 4510-4519

Thai 4510

Vietnamese 4520-4539

Vietnamese (Detailed Checkbox) 4520

Vietnamese 4521

Montagnard 4522

Cham 4523

OTHER ASIAN 4600-4799

Buryat 4620-4629

Buryat 4620

Indo 4630-4639

Indo 4630

Indo-Chinese 4640-4649

Indo-Chinese 4640

Kalmyk 4650-4669

Kalmyk 4650

Kuki 4670-4679

Kuki 4670

Lahu 4680-4689

Lahu 4680

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Hispanic Origin and Race Code List F-17

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Malay 4690-4699

Malay 4690

Mizo 4700-4709

Mizo 4700

Pashtun 4720-4729

Pashtun 4720

Tai Dam 4730-4749

Tai Dam 4730

Urdu 4750-4759

Urdu 4750

Timorese 4760-4769

Timorese 4760

Other Asian Responses 4790-4799

Other Asian (Checkbox) 4790

Asian Responses, Not Elsewhere Classified 4799

AMERICAN INDIAN AND ALASKA NATIVE 5000-6999

American Indian or Alaska Native 5000-5009

American Indian or Alaska Native (Checkbox) 5000

American Indian or Alaska Native (Write-in) 5001

ALASKA NATIVE 5010-5499

Alaska Native (Not Specified) 5010-5019

Alaska Indian 5010

Alaska Native 5011

Alaska Native 5020-5499

Alaskan Athabascan 5020

Ahtna, Inc. Corporation 5021

Alanvik 5022

Alatna Village 5023

Alexander 5024

Allakaket Village 5025

Anvik Village 5026

Arctic Village 5027

Beaver Village 5028

Birch Creek Tribe 5029

Chalkyitsik Village 5030

Cheesh-Na Tribe (Chistochina) 5031

Chickaloon Native Village 5032

Circle Native Community 5033

Cook Inlet 5034

Copper River 5035

Doyon 5036

Eklutna Native Village 5037

Evansville Village (Bettles Field) 5038

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F-18 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Galena Village (Louden Village) 5039

Gulkana Village Council 5040

Healy Lake Village 5041

Holy Cross Tribe 5042

Hughes Village 5043

Huslia Village 5044

Knik Tribe 5045

Koyukuk Native Village 5046

Lake Minchumina 5047

Lime Village 5048

Manley Hot Springs Village 5049

McGrath Native Village 5050

Mentasta Traditional Council 5051

Native Village of Cantwell 5052

Native Village of Chitina 5053

Native Village of Eagle 5054

Native Village of Fort Yukon 5055

Native Village of Gakona 5056

Native Village of Kluti Kaah (Copper Center) 5057

Native Village of Minto 5058

Native Village of Ruby 5059

Native Village of Stevens 5060

Native Village of Tanacross 5061

Native Village of Tanana 5062

Native Village of Tazlina 5063

Native Village of Tetlin 5064

Native Village of Tyonek 5065

Nenana Native Association 5066

Nikolai Village 5067

Ninilchik Village 5068

Nondalton Village 5069

Northway Village 5070

Nulato Village 5071

Organized Village of Grayling (Holikachuk) 5072

Pedro Bay Village 5073

Rampart Village 5074

Seldovia Village Tribe 5075

Shageluk Native Village 5076

Slana 5077

Takotna Village 5078

Tanana Chiefs 5079

Telida Village 5080

Tok 5081

Village of Dot Lake 5082

Village of Iliamna 5083

Village of Kaltag 5084

Salamatof Tribe 5085

Village of Stony River 5086

Village of Venetie 5087

Wiseman 5088

Kenaitze Indian Tribe 5089

Aleut 5120

Agdaagux Tribe of King Cove 5121

Aleut Corporation 5122

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Hispanic Origin and Race Code List F-19

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Alutiiq 5123

Bristol Bay Aleut 5124

Chignik Bay Tribal Council (Native Village of Chignik) 5125

Chignik Lake Village 5126

Chugach Aleut 5127

Chugach Corporation 5128

Egegik Village 5129

Igiugig Village 5130

Ivanof Bay Village 5131

Kaguyak Village 5132

King Cove 5134

King Salmon Tribe 5135

Kodiak 5136

Kokhanok Village 5137

Koniag Aleut 5138

Tangirnaq Native Village 5139

Native Village of Afognak 5140

Native Village of Akhiok 5141

Native Village of Akutan 5142

Native Village of Atka 5143

Native Village of Belkofski 5144

Native Village of Chanega (Chenega) 5145

Native Village of Chignik Lagoon 5146

Native Village of Eyak (Cordova) 5147

Native Village of False Pass 5148

Native Village of Kanatak 5149

Native Village of Karluk 5150

Native Village of Larsen Bay 5151

Native Village of Nanwalek (English Bay) 5152

Native Village of Nelson Lagoon 5153

Native Village of Nikolski 5154

Native Village of Ouzinkie 5155

Native Village of Perryville 5156

Native Village of Pilot Point 5157

Native Village of Port Graham 5158

Native Village of Port Heiden 5159

Native Village of Port Lions 5160

Native Village of Tatitlek 5161

Native Village of Unga 5162

Pauloff Harbor Village 5163

Qagan Tayagungin Tribe of Sand Point Village 5164

Qawalangin Tribe of Unalaska 5165

Saint George Island 5166

Saint Paul Island 5167

South Naknek Village 5168

Sugpiaq 5169

Sun’aq Tribe of Kodiak 5170

Ugashik Village 5171

Unangan (Unalaska) 5172

Alutiiq Tribe of Old Harbor 5173

Eskimo 5220

Inupiat (Inupiaq) 5221

American Eskimo 5222

Arctic Slope Corporation 5223

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F-20 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Atqasuk Village (Atkasook) 5224

Bering Straits Inupiat 5225

Chevak Native Village 5226

Chinik Eskimo Community (Golovin) 5227

Greenland Inuit 5228

Inuit 5229

Inupiat Community of the Arctic Slope 5230

Kaktovik Village (Barter Island) 5231

Kawerak 5232

King Island Native Community 5233

Nana Inupiat 5234

Native Village of Ambler 5235

Native Village of Barrow Inupiat Traditional Government 5236

Native Village of Brevig Mission 5237

Native Village of Buckland 5238

Native Village of Council 5239

Native Village of Deering 5240

Native Village of Diomede (Inalik) 5241

Native Village of Elim 5242

Native Village of Kiana 5243

Native Village of Kivalina 5244

Native Village of Kobuk 5245

Native Village of Kotzebue 5246

Native Village of Koyuk 5247

Native Village of Mary’s Igloo 5248

Native Village of Mekoryuk 5249

Native Village of Noatak 5250

Native Village of Nuiqsut (Nooiksut) 5251

Native Village of Point Hope 5252

Native Village of Point Lay 5253

Native Village of Selawik 5254

Native Village of Shaktoolik 5255

Native Village of Shishmaref 5256

Native Village of Shungnak 5257

Native Village of Teller 5258

Native Village of Unalakleet 5259

Native Village of Wales 5260

Native Village of White Mountain 5261

Nome Eskimo Community 5262

Noorvik Native Community 5263

Village of Anaktuvuk Pass 5264

Village of Solomon 5265

Village of Wainwright 5266

Tlingit 5320

Central Council of the Tlingit and Haida Indian Tribes 5321

Chilkat Indian Village (Klukwan) 5322

Chilkoot Indian Association (Haines) 5323

Craig Tribal Association 5324

Douglas Indian Association 5325

Haida 5326

Hoonah Indian Association 5327

Hydaburg Cooperative Association 5328

Ketchikan Indian Corporation 5329

Klawock Cooperative Association 5330

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Hispanic Origin and Race Code List F-21

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Organized Village of Kake 5331

Organized Village of Kasaan 5332

Organized Village of Saxman 5333

Pelican 5334

Petersburg Indian Association 5335

Sealaska Corporation (Southeast Alaska) 5336

Sitka Tribe of Alaska 5337

Skagway Village 5338

Tenakee Springs 5339

Angoon Community Association 5340

Wrangell Cooperative Association 5341

Yakutat Tlingit Tribe 5342

Tsimshian 5395

Metlakatla Indian Community, Annette Island Reserve 5396

Yup’ik (Yup’ik Eskimo) 5410

Akiachak Native Community 5411

Akiak Native Community 5412

Algaaciq Native Village (St. Mary’s) 5413

Asa’carsarmiut Tribe 5414

Bristol Bay 5415

Calista 5416

Chuloonawick Native Village 5417

Curyung Tribal Council (Native Village of Dillingham) 5418

Native Village of Ekwok 5419

Emmonak Village 5420

Iqugmuit Traditional Council 5421

Levelock Village 5422

Manokotak Village 5423

Naknek Native Village 5424

Native Village of Aleknagik 5425

Native Village of Chuathbaluk 5426

Native Village of Eek 5427

Native Village of Ekuk 5428

Native Village of Gambell 5429

Native Village of Georgetown 5430

Native Village of Goodnews Bay 5431

Native Village of Hamilton 5432

Native Village of Hooper Bay (Naparyarmiut) 5433

Kasigluk Traditional Elders Council 5434

Native Village of Kipnuk 5435

Native Village of Kongiganak 5436

Native Village of Kwigillingok 5437

Native Village of Kwinhagak (Quinhagak) 5438

Native Village of Marshall (Fortuna Ledge) 5439

Native Village of Napaimute 5440

Native Village of Napakiak 5441

Native Village of Napaskiak 5442

Native Village of Nightmute 5443

Native Village of Nunam Iqua 5444

Native Village of Nunapitchuk 5445

Pitka's Point Traditional Council 5446

Native Village of Saint Michael 5447

Native Village of Savoonga 5448

Native Village of Scammon Bay 5449

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F-22 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Native Village of Tuntutuliak 5450

Native Village of Tununak 5451

New Koliganek Village Council 5452

New Stuyahok Village 5453

Newhalen Village 5454

Newtok Village 5455

Nunakauyarmiut Tribe (Toksook Bay) 5456

Organized Village of Kwethluk 5457

Orutsararmiut Traditional Native Council 5458

Oscarville Traditional Village 5459

Pilot Station Traditional Village 5460

Platinum Traditional Village 5461

Portage Creek Village (Ohgsenakale) 5462

Siberian Yupik 5463

Stebbins Community Association 5464

Traditional Village of Togiak 5465

Tuluksak Native Community 5466

Twin Hills Village 5467

Umkumiut Native Village 5468

Village of Alakanuk 5469

Village of Aniak 5470

Village of Atmautluak 5471

Village of Bill Moore’s Slough 5472

Village of Chefornak 5473

Village of Clark’s Point 5474

Village of Crooked Creek 5475

Village of Kalskag 5476

Village of Kotlik 5477

Village of Lower Kalskag 5478

Village of Ohogamiut 5479

Village of Red Devil 5480

Village of Sleetmute 5481

Yupiit of Andreafski 5482

Native Village of Paimiut 5483

AMERICAN INDIAN TRIBES 5500-6499

American Indian (Not Specified) 5500-5504

American Indian 5500

American Indian 5505-6499

Abenaki Nation of Missisquoi 5505

Elnu Abenaki Tribe 5506

Koasek (Cowasuck) Traditional Band of the Sovereign Abenaki Nation 5507

Nulhegan Band of the Coosuk Abenaki Nation 5508

Ak-Chin Indian Community 5510

Algonquian 5512

Apache 5514

Apache Tribe of Oklahoma 5515

Fort Sill Apache Tribe of Oklahoma 5516

Jicarilla Apache Nation 5517

Lipan Apache 5518

Mescalero Apache Tribe of the Mescalero Reservation, New Mexico 5519

San Carlos Apache Tribe of the San Carlos Reservation 5520

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Hispanic Origin and Race Code List F-23

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Tonto Apache Tribe of Arizona 5521

White Mountain Apache Tribe of the Fort Apache Reservation, Arizona 5522

Arapaho 5524

Arapaho Tribe of the Wind River Reservation, Wyoming 5525

Northern Arapaho Tribe 5526

Southern Arapaho 5527

Assiniboine 5529

Assiniboine and Sioux Tribes of The Fort Peck Indian Reservation, Montana 5531

Blackfeet Tribe of the Blackfeet Indian Reservation of Montana 5536

Brotherton 5541

Burt Lake Band of Ottawa and Chippewa Indians 5546

Caddo 5551

Caddo Adais Indians 5552

Caddo Nation of Oklahoma 5553

Natchitoches Tribe of Louisiana 5554

Cahuilla 5556

Agua Caliente Band of Cahuilla Indians 5557

Augustine Band of Cahuilla Indians, California 5558

Cabazon Band of Mission Indians 5559

Los Coyotes Band of Cahuilla and Cupeno Indians 5560

Morongo Band of Mission Indians, California 5561

Ramona Band of Cahuilla, California 5562

Santa Rosa Band of Cahuilla Indians 5563

Torres Martinez Desert Cahuilla Indians 5564

Bear River Band of Rohnerville Rancheria 5566

Cahto Indian Tribe of the Laytonville Rancheria 5567

California Valley Miwok Tribe 5568

Cher-Ae Heights Indian Community of the Trinidad Rancheria 5569

Chimariko 5570

Kern Valley Indian Community 5572

Red Wood 5574

Redding Rancheria, California 5575

Santa Rosa Indian Community 5576

Takelma 5577

Wappo 5578

Yana 5579

Yuki 5580

Catawba Indian Nation 5586

Cayuse 5588

Confederated Tribes of the Chehalis Reservation 5590

Chemakuan 5592

Hoh Indian Tribe 5593

Quileute Tribe of the Quileute Reservation, Washington 5594

Chemehuevi Indian Tribe 5597

Cherokee 5599

Cher-O-Creek Intratribal Indians 5600

Cherokee Alabama 5601

Cherokee Bear Clan of South Carolina 5602

Cherokee Nation 5603

Cherokee of Georgia 5604

Cherokee Tribe of Northeast Alabama 5605

Eastern Band of Cherokee Indians 5606

Echota Cherokee Tribe of Alabama 5607

Four Winds Cherokee 5608

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F-24 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Georgia Eastern Cherokee 5609

Northern Cherokee Nation of Missouri and Arkansas 5610

Piedmont American Indian Association-Lower Eastern Cherokee Nation SC (PAIA) 5611

Sac River Band of the Chickamauga-Cherokee 5612

Southeastern Cherokee Council 5613

Tuscola 5614

United Cherokee Ani-Yun-Wiya Nation 5615

United Keetoowah Band of Cherokee Indians in Oklahoma 5616

White River Band of the Chickamauga-Cherokee 5617

Cheyenne 5619

Northern Cheyenne Tribe of the Northern Cheyenne Reservation, Montana 5620

Southern Cheyenne 5621

Cheyenne and Arapaho Tribes, Oklahoma 5624

Chickahominy Indian Tribe - Eastern Division 5629

Chickahominy Indian Tribe 5630

Chaloklowa Chickasaw 5634

The Chickasaw Nation 5635

Chinook 5639

Clatsop 5640

Columbia River Chinook 5641

Kathlamet 5642

Upper Chinook 5643

Wakiakum Chinook 5644

Willapa Chinook 5645

Wishram 5646

Chippewa 5649

Bad River Band of the Lake Superior Tribe 5650

Bay Mills Indian Community 5651

Bois Forte Band (Nett Lake) 5652

Fond du Lac Band 5653

Grand Portage Band 5654

Grand Traverse Band of Ottawa and Chippewa Indians 5655

Keweenaw Bay Indian Community 5656

Lac Courte Oreilles Band of Lake Superior Chippewa 5657

Lac du Flambeau Band of Lake Superior Chippewa Indian 5658

Lac Vieux Desert Band of Lake Superior Chippewa Indians 5659

Lake Superior Chippewa 5660

Leech Lake Band 5661

Little Shell Tribe of Chippewa Indians of Montana 5662

Mille Lacs Band 5663

Minnesota Chippewa 5664

Red Cliff Band of Lake Superior Chippewa 5665

Red Lake Band of Chippewa Indians 5666

Saginaw Chippewa Indian Tribe 5667

Sault Ste. Marie Tribe of Chippewa Indians 5668

Sokaogon Chippewa Community 5669

St. Croix Chippewa Indians of Wisconsin 5670

Swan Creek Black River Confederate Tribe 5671

Turtle Mountain Band of Chippewa Indians of North Dakota 5672

White Earth Band 5673

Chippewa Cree Indians of the Rocky Boy's Reservation, Montana 5679

Chitimacha Tribe of Louisiana 5684

Pointe Au-Chien Indian Tribe 5685

Choctaw 5689

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Hispanic Origin and Race Code List F-25

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

The Choctaw Nation of Oklahoma 5690

Clifton Choctaw Tribe of Louisiana 5691

Jena Band of Choctaw Indians 5692

Louisiana Choctaw Tribe 5693

Mississippi Band of Choctaw Indians 5694

MOWA Band of Choctaw Indians 5695

Choctaw-Apache Community of Ebarb 5699

Chumash 5701

San Luis Rey Mission Indian 5702

Santa Ynez Band of Chumash Mission Indians 5703

Clear Lake 5706

Coeur D’Alene Tribe 5708

Coharie Indian Tribe 5710

Colorado River Indian Tribes 5712

Confederated Tribes of the Colville Reservation 5714

Comanche Nation, Oklahoma 5716

Coos 5718

Confederated Tribes of the Coos, Lower Umpqua, and Siuslaw Indians 5720

Coquille Indian Tribe 5722

Costanoan 5724

Coushatta 5726

Alabama-Coushatta Tribe of Texas 5727

Coushatta Tribe of Louisiana 5728

Cowlitz Indian Tribe 5731

Cree 5733

The Muscogee (Creek) Nation 5735

Alabama Quassarte Tribal Town 5736

Eastern Creek 5737

Eastern Muscogee 5738

Kialegee Tribal Town 5739

The Southeastern Mvskoke Nation, Inc. 5740

Lower Muskogee Creek Tribe 5741

Ma-Chis Lower Creek Indian Tribe of Alabama 5742

Alabama Creek 5743

Poarch Band of Creeks 5744

Principal Creek Indian Nation 5745

Thlopthlocco Tribal Town 5746

Tuckabachee 5747

Croatan 5750

Crow Tribe of Montana 5752

Cumberland County Association for Indian People 5754

Cupeno 5756

Agua Caliente 5757

Delaware (Lenni-Lenape) 5761

Allegheny Lenape 5762

Delaware Nation 5763

Delaware Tribe of Indians, Oklahoma 5764

Munsee 5765

New Jersey Sand Hill Band of Indians, Inc 5766

Ramapough Lenape Nation (Ramapough Mountain) 5767

Kumeyaay (Diegueno) 5771

Barona Group of Capitan Grande Band 5772

Campo Band of Diegueno Mission Indians 5773

Capitan Grande Band of Diegueno Mission Indians 5774

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F-26 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Ewiiaapaayp Band of Kumeyaay Indians 5775

Iipay Nation of Santa Ysabel 5776

Inaja Band of Diegueno Mission Indians of the Inaja and Cosmit Reservation 5777

Jamul Indian Village 5778

La Posta Band of Diegueno Mission Indians 5779

Manzanita Band of Diegueno Mission Indians 5780

Mesa Grande Band of Diegueno Mission Indians 5781

San Pasqual Band of Diegueno Mission Indians 5782

Sycuan Band of the Kumeyaay Nation 5783

Viejas (Baron Long) Group of Capitan Grande Band 5784

Atakapa 5786

Beaver Creek Indians 5787

Biloxi 5788

Biloxi-Chitimacha Confederation 5789

Cheroenhaka (Nottoway) 5790

Georgetown 5791

Golden Hill Paugussett 5792

Meherrin Indian Tribe 5793

Moor Indian 5794

Nansemond Indian Nation 5795

Edisto Natchez-Kusso Tribe of South Carolina (Natchez Indian Tribe) 5796

Nausu Waiwash 5797

Nottoway Indian Tribe of Virginia 5798

Patawomeck Indian Tribe of Virginia 5799

Pee Dee Indian Nation of Upper South Carolina 5800

Pee Dee Indian Tribe of South Carolina 5801

Pocomoke Acohonock 5802

Santee Indian Nation of South Carolina 5803

Santee Indian Organization 5804

Southeastern Indians 5805

Susquehanock 5806

The Waccamaw Indian People 5807

Tunica Biloxi Indian Tribe of Louisiana 5808

Waccamaw Siouan Indian Tribe 5809

Wassamasaw Tribe of Varnertown Indians 5810

Wicomico 5811

Esselen 5816

Fernandeno Tataviam Band of Mission Indians 5818

Fort Belknap Indian Community of the Fort Belknap Reservation 5820

Bannock 5822

Lemhi-Shoshone 5823

Shoshone-Bannock Tribes of the Fort Hall Reservation 5824

Fort McDowell Yavapai Nation 5827

Gabrieleno 5829

Confederated Tribes of the Grand Ronde Community of Oregon 5831

Gros Ventres 5833

Atsina 5834

Guilford Native American Association 5838

Haliwa-Saponi Indian Tribe 5840

Ho-Chunk Nation 5842

Hoopa Valley Tribe 5844

Trinity 5845

Whilkut 5846

Hoopa Extension 5849

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Hispanic Origin and Race Code List F-27

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Hopi Tribe of Arizona 5851

United Houma Nation 5856

Iowa (Tribe) 5858

Iowa Tribe of Kansas and Nebraska 5859

Iowa Tribe of Oklahoma 5860

Iroquois 5863

Cayuga Nation 5864

Mohawk 5865

Oneida 5866

Oneida Indian Nation 5867

Onondaga Nation 5868

Saint Regis Mohawk Tribe 5869

Seneca Nation of Indians 5870

Seneca-Cayuga Nation 5872

Tonawanda Band of Seneca 5873

Tuscarora Nation 5874

Wyandotte Nation 5875

Juaneno (Acjachemem) 5878

Kalispel Indian Community 5880

Karuk Tribe 5882

Kaw Nation 5884

Kickapoo 5886

Kickapoo Traditional Tribe of Texas 5887

Kickapoo Tribe of Indians of The Kickapoo Reservation in Kansas 5888

Kickapoo Tribe of Oklahoma 5889

Kiowa 5891

Kiowa Indian Tribe of Oklahoma 5892

Klamath Tribes 5896

Konkow 5898

Kootenai Tribe of Idaho 5900

Lassik 5905

Matinecock 5907

Montauk 5908

Poospatuck 5909

Setalcott Indians 5910

Luiseno 5912

La Jolla Band of Luiseno Indians, California 5913

Pala Band of Mission Indians 5914

Pauma Band of Luiseno Mission Indians 5915

Pechanga Band of Luiseno Mission Indians 5916

Rincon Band of Luiseno Mission Indians 5917

Soboba Band of Luiseno Indians 5918

Temecula 5919

Twenty-Nine Palms Band of Luiseno Mission Indians 5920

Lumbee Tribe of North Carolina 5922

Lummi Tribe 5924

Maidu 5926

Berry Creek Rancheria of Maidu Indians 5927

Enterprise Rancheria of Maidu Indians 5928

Greenville Rancheria 5929

Mechoopda Indian Tribe of Chico Rancheria 5930

Mooretown Rancheria of Maidu Indians 5931

Mountain Maidu 5932

Nisenen (Nishinam) 5933

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2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

United Auburn Indian Community of the Auburn Rancheria of California 5934

Makah Indian Tribe 5936

Maliseet 5938

Houlton Band of Maliseet Indians 5939

Mattaponi Indian Tribe 5943

Upper Mattaponi Tribe 5944

Menominee Indian Tribe 5948

Metrolina Native American Association 5950

Miami (Tribe) 5952

Illinois Miami 5953

Indiana Miami 5954

Miami Tribe of Oklahoma 5955

Miccosukee Tribe of Indians of Florida 5957

Micmac 5959

Aroostook Band of Micmacs 5960

Mission Indians 5964

Cahuilla Band of Indians 5965

Miwok/Me-Wuk 5969

Buena Vista Rancheria of Me-Wuk Indians of California 5970

Chicken Ranch Rancheria of Me-Wuk Indians 5971

Ione Band of Miwok Indians 5972

Jackson Band of Miwuk Indians 5973

Shingle Springs Band of Miwok Indians 5974

Tuolumne Band of Me-Wuk Indians of California 5975

Wilton Rancheria 5976

Modoc 5979

The Modoc Tribe of Oklahoma 5980

Mohegan Tribe of Indians of Connecticut 5984

Monacan Indian Nation 5986

Mono 5988

Big Sandy Rancheria of Western Mono Indians of California 5989

Cold Springs Rancheria of Mono Indians 5990

North Fork Rancheria of Mono Indians 5991

Nanticoke 5993

Nanticoke Lenni-Lenape 5995

Narragansett Indian Tribe 5997

Navajo Nation 5999

Nez Perce Tribe 6001

Nipmuc 6003

Chaubunagungamaug Nipmuck 6004

Hassanamisco Band of the Nipmuc Nation 6005

Nomlaki 6008

Paskenta Band of Nomlaki Indians 6009

Alsea 6013

Celilo 6014

Columbia 6015

Kalapuya 6016

Molalla 6017

Talakamish 6018

Tenino 6019

Tillamook 6020

Wenatchee 6021

Omaha Tribe of Nebraska 6023

Oneida Nation 6025

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Oregon Athabascan 6027

The Osage Nation 6029

Otoe-Missouria Tribe of Indians 6031

Ottawa 6033

Grand River Band of Ottawa Indians 6034

Little River Band of Ottawa Indians of Michigan 6035

Little Traverse Bay Bands of Odawa Indians 6036

Ottawa Tribe of Oklahoma 6037

Paiute 6043

Big Pine Paiute Tribe of the Owens Valley 6044

Bridgeport Paiute Indian Colony 6045

Burns Paiute Tribe 6046

Cedarville Rancheria 6047

Fort Bidwell Indian Community 6048

Fort Independence Indian Community 6049

Kaibab Band of Paiute Indians of the Kaibab Indian Reservation 6050

Las Vegas Tribe of Paiute Indians of the Las Vegas Indian Colony 6051

Lovelock Paiute Tribe of the Lovelock Indian Colony, Nevada 6052

Malheur Paiute 6053

Moapa Band of Paiute Indians of the Moapa River Indian Reservation, Nevada 6054

Northern Paiute 6055

Paiute Indian Tribe of Utah (Southern Paiute) 6056

Pyramid Lake Paiute Tribe of the Pyramid Lake Reservation, Nevada 6057

San Juan Southern Paiute Tribe of Arizona 6058

Summit Lake Paiute Tribe of Nevada 6059

Susanville Indian Rancheria, California 6060

Utu Utu Gwaitu Paiute Tribe of the Benton Paiute Reservation, California 6061

Walker River Paiute Tribe of the Walker River Reservation, Nevada 6062

Winnemucca Indian Colony of Nevada 6063

Yerington Paiute Tribe of the Yerington Colony and Campbell Ranch, Nevada 6065

Shoshone Paiute 6068

Fort McDermitt Paiute and Shoshone Tribe of Nevada and Oregon 6069

Lone Pine Paiute-Shoshone Tribe 6070

Paiute-Shoshone Tribe of the Fallon Reservation and Colony, Nevada 6071

Bishop Paiute Tribe 6072

Shoshone-Paiute Tribes of the Duck Valley Reservation 6073

Pamunkey Indian Tribe 6078

Indian Township 6080

Passamaquoddy Tribe 6081

Pleasant Point Passamaquoddy 6082

Pawnee 6085

Pawnee Nation of Oklahoma 6086

Penobscot Nation 6090

Peoria Tribe of Indians of Oklahoma 6093

Pequot 6097

Eastern Pequot 6098

Mashantucket Pequot Indian Tribe 6099

Paucatuck Eastern Pequot 6100

Pima 6102

Gila River Indian Community of the Gila River Indian Reservation 6103

Maricopa 6104

Salt River Pima-Maricopa Indian Community 6105

Piscataway 6107

Piscataway Conoy Tribe 6108

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U.S. Census Bureau

Piscataway Indian Nation 6109

Alturas Indian Rancheria 6112

Pit River Tribe of California 6113

Pomo 6117

Big Valley Band of Pomo Indians of the Big Valley Rancheria 6118

Central Pomo 6119

Cloverdale Rancheria of Pomo Indians of California 6120

Coyote Valley Band of Pomo Indians of California 6121

Dry Creek Rancheria Band of Pomo Indians, California 6122

Eastern Pomo 6123

Elem Indian Colony of the Sulphur Bank Rancheria 6124

Federated Indians of Graton Rancheria 6125

Guidiville Rancheria of California 6126

Habematolel Pomo of Upper Lake 6127

Hopland Band of Pomo Indians 6128

Kashia Band of Pomo Indians of the Stewarts Point Rancheria 6129

Koi Nation of Northern California 6130

Lytton Rancheria of California 6131

Manchester Band of Pomo Indians of the Manchester Rancheria, California 6132

Middletown Rancheria of Pomo Indians 6133

Northern Pomo 6134

Pinoleville Pomo Nation 6135

Potter Valley Tribe 6136

Redwood Valley or Little River Band of Pomo Indians of the Redwood Valley 

Rancheria California 6137

Robinson Rancheria 6138

Scotts Valley Band of Pomo Indians of California 6139

Sherwood Valley Rancheria of Pomo Indians of California 6140

Stonyford 6141

Ponca 6147

Ponca Tribe of Indians of Oklahoma 6148

Ponca Tribe of Nebraska 6149

Potawatomi 6152

Citizen Potawatomi Nation, Oklahoma 6153

Forest County Potawatomi Community, Wisconsin 6154

Hannahville Potawatomi Indian Tribe, Michigan 6155

Match-e-be-nash-she-wish Band of Pottawatomi Indians 6156

Nottawaseppi Huron Band of the Potawatomi, Michigan 6157

Pokagon Band of Potawatomi Indians 6158

Prairie Band Potawatomi Nation 6159

Powhatan 6162

Pueblo 6164

Ohkay Owingeh, New Mexico 6165

Piro Manso Tiwa Tribe 6166

Pueblo of Acoma 6167

Pueblo of Cochiti 6168

Pueblo of Isleta 6169

Pueblo of Jemez 6170

Pueblo of Laguna 6171

Pueblo of Nambe 6172

Pueblo of Picuris 6173

Pueblo of Pojoaque 6174

Pueblo of San Felipe 6175

Pueblo of San Ildefonso 6176

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Hispanic Origin and Race Code List F-31

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U.S. Census Bureau

Pueblo of Sandia 6177

Pueblo of Santa Ana 6178

Pueblo of Santa Clara 6179

Kewa Pueblo, New Mexico 6180

Pueblo of Taos 6181

Pueblo of Tesuque 6182

Pueblo of Zia 6183

San Juan 6184

Ysleta Del Sur Pueblo of Texas 6185

Zuni Tribe of the Zuni Reservation 6186

Puget Sound Salish 6189

Duwamish 6190

Kikiallus 6191

Lower Skagit 6192

Marietta Band of Nooksack 6193

Muckleshoot Indian Tribe 6194

Nisqually Indian Tribe 6195

Nooksack Indian Tribe 6196

Puyallup Tribe of The Puyallup Reservation 6197

Samish Indian Nation 6198

Sauk-Suiattle Indian Tribe 6199

Skokomish Indian Tribe 6200

Skykomish 6201

Snohomish 6202

Snoqualmie Indian Tribe 6203

Squaxin Island Tribe of the Squaxin Island Reservation, Washington 6204

Steilacoom 6205

Stillaguamish Tribe of Indians of Washington 6206

Swinomish Indian Tribal Community 6207

The Suquamish Tribe 6208

Tulalip Tribes of Washington 6209

Upper Skagit Indian Tribe 6210

Quapaw Nation 6214

Quinault Indian Nation 6216

Rappahannock Tribe, Inc. 6218

Reno-Sparks Indian Colony, Nevada 6220

Round Valley Indian Tribes 6222

Klallam 6224

Jamestown S’Klallam Tribe 6225

Lower Elwha Tribal Community 6226

Port Gamble S'Klallam Tribe 6227

Sac and Fox 6229

Sac and Fox Nation of Missouri in Kansas and Nebraska 6230

Sac and Fox Nation, Oklahoma 6231

Sac and Fox Tribe of the Mississippi in Iowa 6232

Salinan 6234

Salish 6236

Confederated Salish and Kootenai Tribes of the Flathead Nation 6238

Saponi 6240

Occaneechi Band of the Saponi Nation 6241

Sappony 6245

Schaghticoke 6247

Seminole 6249

Seminole Tribe of Florida 6250

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F-32 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

The Seminole Nation of Oklahoma 6251

Serrano 6259

San Manuel Band of Mission Indians, California 6260

Shasta 6264

Quartz Valley Indian Reservation 6265

Shawnee 6269

Absentee Shawnee Tribe of Indians of Oklahoma 6270

East of the River Shawnee 6271

Eastern Shawnee Tribe of Oklahoma 6272

Piqua Shawnee Tribe 6273

Shawnee Nation United Remnant Band 6274

Shawnee Tribe 6275

Shinnecock Indian Nation 6279

Shoalwater Bay Indian Tribe of the Shoalwater Bay Indian Reservation 6281

Shoshone 6283

Confederated Tribes of the Goshute Reservation 6284

Timbisha Shoshone Tribe 6285

Duckwater Shoshone Tribe 6286

Eastern Shoshone Tribe of the Wind River Reservation, Wyoming 6287

Ely Shoshone Tribe 6288

Northwestern Band of the Shoshone Nation 6289

Skull Valley Band of Goshute Indians of Utah 6290

Yomba Shoshone Tribe of the Yomba Reservation, Nevada 6291

Confederated Tribes of Siletz Indians of Oregon 6293

Sioux 6295

Brule Sioux 6296

Cheyenne River Sioux Tribe of the Cheyenne River Reservation, South Dakota 6297

Crow Creek Sioux Tribe of the Crow Creek Reservation, South Dakota 6298

Flandreau Santee Sioux Tribe of South Dakota 6300

Lower Brule Sioux Tribe of the Lower Brule Reservation, South Dakota 6301

Lower Sioux Indian Community in the State of Minnesota 6302

Mdewakanton Sioux 6303

Oglala Sioux Tribe 6304

Pipestone Sioux 6305

Prairie Island Indian Community 6306

Rosebud Sioux Tribe of the Rosebud Indian Reservation, South Dakota 6307

Santee Sioux Nation, Nebraska 6308

Shakopee Mdewakanton Sioux Community of Minnesota 6309

Sisseton-Wahpeton Oyate of the Lake Traverse Reservation, South Dakota 6310

Spirit Lake Tribe 6311

Standing Rock Sioux Tribe of North & South Dakota 6312

Teton Sioux 6313

Upper Sioux Community 6314

Wahpekute Sioux 6315

Wazhaza Sioux 6316

Yankton Sioux Tribe of South Dakota 6317

Yanktonai Sioux 6318

Siuslaw 6320

Spokane Tribe of The Spokane Reservation 6322

Stockbridge-Munsee Community 6324

Te-Moak Tribes of Western Shoshone Indians of Nevada 6326

Arikara (Sahnish) 6336

Hidatsa 6337

Mandan 6338

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Hispanic Origin and Race Code List F-33

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Three Affiliated Tribes of Ft. Berthold Reservation, North Dakota 6339

Tohono O’odham Nation of Arizona 6341

Tolowa 6346

Big Lagoon Rancheria 6347

Elk Valley Rancheria 6348

Tolowa Dee-Ni' Nation 6349

Tonkawa Tribe of Indians of Oklahoma 6351

Tygh 6353

Confederated Tribes of the Umatilla Indian Reservation 6355

Umpqua 6357

Cow Creek Band of Umpqua Tribe of Indians 6358

Ute 6362

Southern Ute Indian Tribe of the Southern Ute Reservation 6363

Ute Indian Tribe of the Uintah and Ouray Reservation, Utah 6364

Ute Mountain Ute Tribe 6365

Wailaki 6367

Walla Walla 6369

Wampanoag 6371

Assonet Band of the Wampanoag Nation 6372

Chappaquiddick Tribe of the Wampanoag Indian Nation 6373

Herring Pond Wampanoag Tribe 6374

Mashpee Wampanoag Tribe 6375

Pocasset Wampanoag 6376

Pokanoket (Royal House of Pokanoket) 6377

Ponkapoag 6378

Seaconke Wampanoag 6379

Wampanoag Tribe of Gay Head (Aquinnah) 6380

Confederated Tribes of Warm Springs 6386

Wasco 6388

Alpine 6390

Washoe Tribe of Nevada and California 6391

Wichita and Affiliated Tribes, Oklahoma 6395

Wind River 6400

Winnebago 6402

Winnebago Tribe of Nebraska 6403

Wintun 6407

Cachil Dehe Band of Wintun Indians of the Colusa Rancheria 6408

Kletsel Dehe Band of Wintun Indians 6409

Yocha Dehe Wintun Nation, California 6410

Grindstone Indian Rancheria of Wintun-Wailaki Indians 6412

Blue Lake Rancheria 6414

Wiyot Tribe, California 6415

Confederated Tribes and Bands of the Yakama Nation 6419

Yakama Cowlitz 6421

Yaqui 6423

Pascua Yaqui Tribe of Arizona 6424

Yavapai Apache Nation of the Camp Verde Indian Reservation 6428

Yokuts 6430

Picayune Rancheria of Chukchansi Indians 6431

Table Mountain Rancheria 6432

Tachi 6433

Tejon Indian Tribe 6434

Tule River Indian Tribe 6435

Yuchi 6440

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F-34 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Ani-stohini/Unami 6441

Cocopah Tribe of Arizona 6445

Fort Mojave Indian Tribe of Arizona, California, and Nevada 6446

Havasupai Tribe of the Havasupai Reservation 6447

Hualapai Indian Tribe of the Hualapai Indian Reservation 6448

Quechan Tribe of the Fort Yuma Indian Reservation, California and Arizona 6450

Yavapai-Prescott Tribe of the Yavapai Reservation 6451

Yurok Tribe 6455

Resighini Rancheria 6456

Tribal responses, Not Elsewhere Classified 6460

CANADIAN INDIAN 6500-6799

Canadian Indian 6500

French Canadian/French American Indian 6501

Abenaki Canadian 6502

Acadia Band 6503

Ache Dene Koe 6504

Ahousaht 6505

Alderville First Nation 6506

Alexandria Band 6507

Algonquins of Barriere Lake 6508

Batchewana First Nation 6509

Beardys and Okemasis Band 6510

Beausoleil 6511

Beecher Bay 6512

Bella Coola (Nuxalk Nation) 6513

Beothuk 6514

Big Cove 6515

Big Grassy 6516

Bigstone Cree Nation 6517

Bonaparte Band 6518

Boston Bar First Nation 6519

Bridge River 6520

Brokenhead Ojibway Nation 6521

Buffalo Point Band 6522

Caldwell 6523

Campbell River Band 6524

Cape Mudge Band 6525

Carcross/Tagish First Nation 6526

Caribou 6527

Carrier Nation 6528

Carry the Kettle Band 6529

Cheam Band 6530

Chemainus First Nation 6531

Chilcotin Nation 6532

Chippewa of Sarnia 6533

Chippewa of the Thames 6534

Chippewa/Ojibwe Canadian 6535

Clayoquot 6536

Cold Lake First Nations 6537

Coldwater Band 6538

Comox Band 6539

Coquitlam Band (Kwikwetlem First Nation) 6540

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Hispanic Origin and Race Code List F-35

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Cote First Nation 6541

Couchiching First Nation 6542

Cowessess Band 6543

Cowichan 6544

Cree Canadian 6545

Cross Lake First Nation 6546

Curve Lake Band 6547

Dene Band Nwt (NW Territory) 6548

Dene Canadian 6549

Ditidaht Band 6550

Dogrib 6551

Eagle Lake Band 6552

Eastern Cree 6553

Ebb and Flow Band 6554

English River First Nation 6555

Eskasoni 6556

Esquimalt 6557

Fisher River 6558

Five Nations 6559

Fort Alexander Band 6560

Garden River Nation 6561

Gibson Band (Wahta Mohawk) 6562

Gitksan 6563

Grassy Narrows First Nation 6565

Gull Bay Band 6566

Gwichya Gwich'in 6567

Heiltsuk Band 6568

Hesquiaht Band 6569

Hiawatha First Nation 6570

Hope Band (Chawathil Nation) 6571

Huron 6572

Huron of Lorretteville 6573

Innu (Montagnais) 6574

Interior Salish 6575

James Bay Cree 6576

James Smith Cree Nation 6577

Kahkewistahaw First Nation 6578

Kamloops Band 6579

Kanaka Bar 6580

Mohawks of Kanesatake 6581

Kaska Dena 6582

Keeseekoose Band 6583

Nisga'a Nation 6584

Kingsclear Band 6585

Kitamaat 6586

Kitigan Zibi Anishinabeg 6587

Klahoose First Nation 6588

Kwakiutl 6589

Kyuquot Band 6590

Lakahahmen Band 6591

Lake Manitoba Band 6592

Lake St. Martin Band 6593

Lennox Island Band 6594

Liard River First Nation 6595

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F-36 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Lillooet 6596

Little Shuswap Band 6597

Long Plain First Nation 6598

Lower Nicola Indian Band 6599

Malahat First Nation 6600

Matachewan Band 6601

Mcleod Lake 6602

Metis 6603

Millbrook First Nation 6604

Mississaugas of the Credit 6605

Mohawks of the Bay of Quinte 6606

Mohawk Canadian 6607

Mohawk Kahnawake 6608

Mohican Canadian 6609

Musqueam Band 6610

N’Quatqua (Anderson Lake) 6611

Namgis First Nation (Nimpkish) 6612

Nanaimo (Snuneymuxw) 6613

Nanoose First Nation 6614

Naskapi 6615

Nation Huronne Wendat 6616

Nipissing First Nation 6617

North Thompson Band (Simpcw First Nation) 6618

Nuu-chah-nulth (Nootka) 6619

Odanak 6620

Ohiaht Band (Huu-ay-aht First Nation) 6621

Oneida Nation of the Thames 6622

Opaskwayak Cree Nation 6623

Osoyoos Band 6624

Pacheedaht First Nation 6625

Pauquachin 6626

Peepeekisis 6627

Peguis 6628

Penelakut 6629

Penticton 6630

Pine Creek 6631

Plains Cree 6632

Rainy River First Nations 6633

Red Earth Band 6634

Listuguj Mi'Gmaq First Nation 6635

Roseau River 6636

Saddle Lake 6637

Sakimay First Nations 6638

Sandy Bay Band 6639

Sarcee (Tsuut'Ina Nation) 6640

Saugeen 6641

Saulteau First Nations 6642

Saulteaux 6643

Seabird Island 6644

Sechelt 6645

Seine River First Nation 6646

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Hispanic Origin and Race Code List F-37

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Serpent River 6647

Seton Lake 6648

Shoal Lake Cree Nation 6649

Shuswap 6650

Siksika Canadian 6651

Similkameen 6652

Six Nations Canada 6653

Six Nations of the Grand River 6654

Skawahlook First Nation 6655

Skeetchestn Indian Band 6656

Skookum Chuck Band 6657

Skowkale 6658

Skuppah 6659

Skwah First Nation 6660

Skway First Nation 6661

Songhees First Nation 6662

Soowahlie First Nation 6663

Spuzzum First Nation 6664

Squamish Nation 6665

Stanjikoming First Nation 6666

Sto:lo Nation 6667

Stone 6668

Sucker Creek First Nation 6669

Swampy Cree 6670

Tahltan 6671

Taku River Tlingit 6672

Tete De Boule (Attikamek) 6673

Thompson 6674

Tobacco Plains Band 6675

Tobique First Nation 6676

Toquaht 6677

Tsartlip 6678

Tsawout First Nation 6679

Tseycum 6680

Uchucklesaht 6681

Ucluelet First Nation 6682

Vuntut Gwitchin First Nation 6683

Wabauskang First Nation 6684

Walpole Island 6685

Wasauksing First Nation 6686

Waywayseecappo First Nation 6687

West Bay Band 6688

White Bear Band 6689

Whitefish Lake Band 6690

Wikwemikong 6691

Wolf Lake Band 6692

Woodland Cree First Nation 6693

Woodstock First Nation 6694

Xaxli'p First Nation (Fountain Band) 6695

Canadian Indian, Not Elsewhere Classified 6696

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F-38 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

LATIN AMERICAN INDIAN3 6800-6999

Central American Indian 6800-6839

Central American Indian 6800

Belizean Indian 6801

Cakchiquel 6802

Choco 6803

Costa Rican Indian 6804

Salvadoran Indian 6805

Guatemalan Indian 6806

Guatemalan Mayan 6807

Guaymi 6808

Honduran Indian 6809

Kanjobal 6810

Kekchi 6811

Kuna Indian 6812

Lenca 6813

Maya Central American 6814

Miskito 6815

Nicaraguan Indian 6816

Panamanian Indian 6817

Pipil 6818

Quiche 6819

Rama 6820

Sumo 6821

Nahua 6822

Central American Indian, Not Elsewhere Classified 6839

Mexican Indian 6840-6914

Mexican Indian 6840

Amuzgo 6841

Aztec 6843

Chatino 6844

Chinantec 6845

Chocho 6846

Concho 6847

Cora 6848

Cochimi 6849

Cuicatec 6850

Huastec 6851

Huave 6852

Huichol 6853

Ixcatec 6854

Lacandon 6855

Lagunero 6856

Mazahua 6857

Mazatec 6858

Mixe 6859

Mixtec 6860

Nahuatl 6861

3 When responses in the Mexican Indian, Central American Indian, South American Indian, Caribbean Indian, Spanish 

American Indian, and Mesoamerican Indian code range (6800-6999) are reported in the Hispanic origin question, they are 

tabulated as Hispanic. When responses in the Mexican Indian, Central American Indian, South American Indian, Caribbean 

Indian, Spanish American Indian, and Mesoamerican Indian code range are reported in the race question, they are tabulated as 

American Indian and Alaska Native.

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U.S. Census Bureau

Olmec 6862

Opata 6863

Otomi 6864

Popoluca 6865

Seri 6866

Tarahumara (Raramuri) 6867

Tarasco (Purepecha) 6868

Tepehua 6869

Tequistlatec 6870

Tlapanec 6871

Tojolabal 6872

Toltec 6873

Triqui (Trique) 6874

Tzeltal 6875

Tzotzil 6876

Zapotec 6877

Zoque 6878

Mexican American Indian 6879

Chichimeca 6880

Mexican Indian, Not Elsewhere Classified 6914

South American Indian 6915-6959

South American Indian 6915

Ache Indian 6916

Amazon Indian 6917

Andean Indian 6918

Arawak 6919

Argentinean Indian 6920

Aymara 6921

Bolivian Indian 6922

Brazilian Indian 6923

Canela 6924

Chilean Indian 6925

Colombian Indian 6926

Ecuadorian Indian 6927

Guarani 6928

Guyanese South American Indian 6929

Inca 6930

Mapuche (Araucanian) 6931

Maya South American 6932

Paraguayan Indian 6933

Peruvian Indian 6934

Quechua 6935

Quichua 6936

Tehuelche 6937

Tupi 6938

Uruguayan Indian 6939

Venezuelan Indian 6940

Zaparo 6941

South American Indian, Not Elsewhere Classified 6959

Caribbean Indian 6960-6974

Caribbean Indian 6960

Carib 6961

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F-40 Hispanic Origin and Race Code List

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Taino 6962

Dominican Indian 6963

Puerto Rican Indian 6964

Cuban Indian 6965

Caribbean Indian, Not Elsewhere Classified 6974

Spanish American Indian 6975-6979

Spanish American Indian 6975

Spanish American Indian, Not Elsewhere Classified 6979

Mesoamerican Indian 6980-6989

Mesoamerican Indian 6980

Mayo 6981

Maya 6982

Mesoamerican Indian, Not Elsewhere Classified 6989

MIDDLE EASTERN AND NORTH AFRICAN 7000-7499

Middle Eastern or North African 7000-7009

Middle Eastern or North African (Write-in) 7001

Algerian 7010-7019

Algerian 7010

Arab 7020-7029

Arab 7020

Assyrian 7030-7039

Assyrian 7030

Bahraini 7040-7049

Bahraini 7040

Berber 7050-7059

Berber 7050

Chaldean 7060-7069

Chaldean 7060

Egyptian 7070-7079

Egyptian 7071

Copt 7072

Emirati 7080-7089

Emirati 7080

Iranian 7090-7099

Iranian 7091

Iraqi 7100-7109

Iraqi 7100

Israeli 7110-7119

Israeli 7111

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Hispanic Origin and Race Code List F-41

2020 Census State Redistricting (Public Law 94-171) Summary File 

U.S. Census Bureau

Jordanian 7120-7129

Jordanian 7120

Kurdish 7130-7139

Kurdish 7130

Kuwaiti 7140-7149

Kuwaiti 7140

Lebanese 7150-7159

Lebanese 7151

Libyan 7160-7169

Libyan 7160

Middle Eastern 7170-7179

Middle Eastern 7170

Moroccan 7180-7189

Moroccan 7181

North African 7190-7199

North African 7190

Omani 7200-7209

Omani 7200

Palestinian 7210-7219

Palestinian 7210

Qatari 7220-7229

Qatari 7220

Saudi 7230-7239

Saudi 7230

Syriac 7240-7249

Syriac 7240

Syrian 7250-7259

Syrian 7251

Tunisian 7260-7269

Tunisian 7260

Yazidi 7270-7279

Yazidi 7270

Yemeni 7280-7289

Yemeni 7280

Other Middle Eastern or North African Responses 7290-7399

Middle Eastern or North African Responses, Not Elsewhere Classified 7399

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NATIVE HAWAIIAN AND OTHER PACIFIC ISLANDER 7500-7999

Native Hawaiian or Other Pacific Islander 7500-7504

Native Hawaiian or Other Pacific Islander (Checkbox) 7500

Native Hawaiian or Other Pacific Islander (Write-in) 7501

POLYNESIAN 7505-7604

Polynesian 7505-7509

Polynesian 7505

Cook Islander 7510-7514

Cook Islander 7510

Easter Islander 7515-7519

Easter Islander 7515

French Polynesian 7520-7524

French Polynesian 7520

Maori 7525-7529

Maori 7525

Native Hawaiian 7530-7539

Native Hawaiian (Detailed Checkbox) 7530

Native Hawaiian 7531

Hawaiian 7532

Part Hawaiian 7535

Niuean 7540-7544

Niuean 7540

Rotuman 7545-7549

Rotuman 7545

Samoan 7550-7554

Samoan (Detailed Checkbox) 7550

Samoan 7551

Tahitian 7555-7559

Tahitian 7555

Tongan 7560-7564

Tongan 7561

Tokelauan 7565-7569

Tokelauan 7565

Tuvaluan 7570-7574

Tuvaluan 7570

Wallisian and Futunan 7575-7579

Wallisian and Futunan 7575

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Other Polynesian Responses 7600-7604

Polynesian Responses, Not Elsewhere Classified 7604

MICRONESIAN 7605-7704

Micronesian 7605-7609

Micronesian 7605

Carolinian 7610-7614

Carolinian 7610

Chamorro 7615-7619

Chamorro (Detailed Checkbox) 7615

Chamorro 7616

Chuukese 7620-7624

Chuukese 7620

Guamanian 7625-7629

Guamanian 7625

I-Kiribati 7630-7634

I-Kiribati 7630

Kosraean 7635-7639

Kosraean 7635

Marshallese 7640-7654

Marshallese 7641

Bikinian 7642

Ejit 7643

Kili 7644

Mili 7645

Enewetak Islander 7646

Ujelang 7647

Ebeye 7648

Kwajalein Islander 7649

Nauruan 7655-7659

Nauruan 7655

Northern Mariana Islander 7660-7664

Northern Mariana Islander 7660

Palauan 7665-7669

Palauan 7665

Pohnpeian 7670-7674

Pohnpeian 7670

Saipanese 7675-7679

Saipanese 7675

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Yapese 7680-7684

Yapese 7680

Other Micronesian Responses 7700-7704

Micronesian Responses, Not Elsewhere Classified 7704

MELANESIAN 7705-7804

Melanesian 7705-7709

Melanesian 7705

Fijian 7710-7714

Fijian 7711

Indo Fijian 7712

Papua New Guinean 7715-7719

Papua New Guinean 7715

Solomon Islander 7720-7724

Solomon Islander 7720

Ni-Vanuatu 7725-7729

Ni-Vanuatu 7725

New Caledonian 7730-7734

New Caledonian 7730

Other Melanesian Responses 7800-7804

Melanesian Responses, Not Elsewhere Classified 7804

OTHER PACIFIC ISLANDER 7805-7999

Pacific Islander 7805-7809

Other Pacific Islander (Checkbox) 7805

Pacific Islander 7806

SOME OTHER RACE 8000-8999

SOME OTHER RACE RESPONSES 8000-8499

Some Other Race 8000-8009

Some Other Race (Checkbox) 8000

Some Other Race (Write-in) 8001

Other Race 8002

Aborigines 8010-8019

Aborigines 8010

Aruban 8020-8029

Aruban 8020

Aryan 8030-8039

Aryan 8030

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Belizean 8040-8049

Belizean 8040

Bermudan 8050-8059

Bermudan 8050

Brazilian 8060-8069

Brazilian 8060

Cabo Verdean 8080-8089

Cabo Verdean 8080

Caribbean 8090-8099

Caribbean 8090

Cayman Islander 8100-8109

Cayman Islander 8100

Comorian 8120-8129

Comorian 8120

Creole 8130-8139

Creole 8130

Guyanese 8140-8149

Guyanese 8140

Guyanese Indian 8141

Indian 8170-8179

Indian 8170

Indigenous 8180-8189

Indigenous 8180

Mauritanian 8190-8199

Mauritanian 8190

North American 8200-8209

North American 8200

Other Caribbean or South American Responses 8210-8219

Other Caribbean or South American Responses, Not Elsewhere Classified 8210

Surinamese 8220-8229

Surinamese 8220

Turkic 8230-8239

Turkic 8230

MULTIRACIAL/MULTIETHNIC RESPONSES 8500-8999

Amerasian 8500-8509

Amerasian 8500

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Biracial 8510-8519

Biracial 8510

Eurasian 8520-8529

Eurasian 8520

Interracial 8530-8539

Interracial 8530

Mixed 8540-8549

Mixed 8540

Mixed Responses, Not Elsewhere Classified 8549

Mulatto 8550-8559

Mulatto 8550

Multicultural 8560-8569

Multicultural 8560

Multiracial 8570-8579

Multiracial 8570

OTHER RESPONSES 9000-9999

Other Codes 9500-9999

No, Not of Hispanic, Latino, or Spanish Origin (Checkbox) 9950

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Appendix G.

Residence Criteria and Residence Situations for 

the 2020 Census of the United States

CONTENTS

Where You Are Counted Is Important ............................................ G-1

The Concept of Usual Residence ................................................. G-1

The Residence Criteria .......................................................... G-2

1. People Away From Their Usual Residence on Census Day .................... G-2

2. Visitors on Census Day ................................................... G-2

3. Foreign Citizens in the United States ....................................... G-3

4. People Living Outside the United States .................................... G-3

5. People Who Live or Stay in More Than One Place ............................ G-3

6. People Moving Into or out of a residence around Census Day ................. G-4

7. People Who Are Born or Who Die Around Census Day ....................... G-4

8. Relatives and Nonrelatives ................................................ G-4

9. People in Residential School-Related Facilities .............................. G-5

10. College Students (and staff living in college housing) ........................ G-5

11. People in Health Care Facilities ............................................ G-6

12. People in Housing for Older Adults ......................................... G-6

13. U.S. Military Personnel .................................................... G-6

14. Merchant Marine Personnel on U.S. Flag Maritime/Merchant Vessels ........... G-7

15. People in Correctional Facilities for Adults .................................. G-7

16. People in Group Homes and Residential Treatment Centers for Adults ......... G-8

17. People in Juvenile Facilities ............................................... G-8

18. People in Transitory Locations ............................................ G-8 

19. People in Workers’ Residential Facilities .................................... G-9

20. People in Religious-Related Residential Facilities ............................ G-9

21. People in Shelters and People Experiencing Homelessness ................... G-9

WHERE YOU ARE COUNTED IS IMPORTANT

The U.S. Census Bureau is committed to counting every person in the 2020 Census once, only 

once, and in the right place. The fundamental reason that the decennial census is conducted 

is to fulfill the Constitutional requirement (Article I, Section 2) to apportion the seats in the 

U.S. House of Representatives among the states1. For a fair and equitable apportionment, it is 

crucial that the Census Bureau counts everyone in the right place during the decennial census.

THE CONCEPT OF USUAL RESIDENCE

The Census Bureau's enumeration procedures are guided by the constitutional and statutory 

mandates to count all residents of the several states. [U.S. Const. Art. 1, Section 2, cl.3, Title 

13, United States Code, Section 141.] The state in which a person resides and the specific 

location within that state is determined in accordance with the concept of “usual residence,” 

which is defined by the Census Bureau as the place where a person lives and sleeps most of 

the time. This is not always the same as a person’s legal residence, voting residence, or where 

1 Apportionment is based on the resident population, plus a count of overseas federal employees, for each of the 50 states. Redistricting data include the resident population of the 50 states, District of Columbia, and Puerto Rico.

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they prefer to be counted. This concept of “usual residence” is grounded in the law providing 

for the first census, the Act of March 1, 1790, expressly specifying that persons be enumerated at their “usual place of abode.” 

Determining usual residence is straightforward for most people. However, given our nation’s 

wide diversity in types of living arrangements, the concept of usual residence has a variety 

of applications. Some examples of these living arrangements include people experiencing 

homelessness, people with a seasonal/second residence, people in group facilities2, people in 

the process of moving, people in hospitals, children in shared custody arrangements, college 

students, live-in employees, military personnel, and people who live in workers’ dormitories. 

Applying the usual residence concept to real living situations means that people will not 

always be counted at the place where they happen to be staying on Census Day (April 1, 

2020) or at the time they complete their census questionnaire. Therefore, this document lists 

many specific residence situations after defining the residence criteria, in order to illustrate 

how the criteria are applied. 

THE RESIDENCE CRITERIA

The Residence Criteria are used to determine where people are counted during the 2020 

Census. The Criteria say: 

• Count people at their usual residence, which is the place where they live and sleep most of 

the time. 

• People in certain types of group facilities on Census Day are counted at the group facility. 

• People who do not have a usual residence, or who cannot determine a usual residence, are 

counted where they are on Census Day. 

The following sections describe how the Residence Criteria apply to certain living situations 

for which people commonly request clarification. 

1. PEOPLE AWAY FROM THEIR USUAL RESIDENCE ON CENSUS DAY

a) People away from their usual residence on Census Day, such as on a vacation or a 

business trip, visiting, traveling outside the United States, or working elsewhere without a usual residence there (for example, as a truck driver or traveling salesperson)—

Counted at the residence where they live and sleep most of the time. 

2. VISITORS ON CENSUS DAY

a) Visitors on Census Day—Counted at the residence where they live and sleep most of 

the time. If they do not have a usual residence to return to, they are counted where 

they are staying on Census Day.

2 In this document, “group facilities” (referred to also as “group quarters” [GQ]) are defined as places where people live or stay 

in group living arrangements, which are owned or managed by an entity or organization providing housing and/or services for the 

residents.

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3. FOREIGN CITIZENS IN THE UNITED STATES

a) Citizens of foreign countries living in the United States—Counted at the U.S. residence 

where they live and sleep most of the time. 

b) Citizens of foreign countries living in the United States who are members of the diplomatic community—Counted at the embassy, consulate, United Nations’ facility, or 

other residences where diplomats live. 

c) Citizens of foreign countries visiting the United States, such as on a vacation or business trip—Not counted in the census. 

4. PEOPLE LIVING OUTSIDE THE UNITED STATES

a) People deployed outside the United States3 on Census Day (while stationed or 

assigned in the United States) who are military or civilian employees of the U.S. government—Counted at the U.S. residence where they live and sleep most of the time, 

using administrative data provided by federal agencies.4

b) People stationed or assigned outside the United States on Census Day who are military or civilian employees of the U.S. government, as well as their dependents living 

with them outside the United States—Counted as part of the U.S. federally affiliated 

overseas population, using administrative data provided by federal agencies.

c) People living outside the United States on Census Day who are not military or civilian employees of the U.S. government and are not dependents living with military or 

civilian employees of the U.S. government—Not counted in the stateside census. 

5. PEOPLE WHO LIVE IN MORE THAN ONE PLACE

a) People living away most of the time while working, such as people who live at a residence close to where they work and return regularly to another residence—Counted 

at the residence where they live and sleep most of the time. If they cannot determine 

a place where they live most of the time, they are counted where they are staying on 

Census Day. 

b) People who live or stay at two or more residences (during the week, month, or year), 

such as people who travel seasonally between residences (for example, snowbirds)—

Counted at the residence where they live and sleep most of the time. If they cannot 

determine a place where they live most of the time, they are counted where they are 

staying on Census Day.

c) Children in shared custody or other arrangements who live at more than one residence—Counted at the residence where they live and sleep most of the time. If they 

cannot determine a place where they live most of the time, they are counted where 

they are staying on Census Day. 

3 In this document, “Outside the United States” and “foreign port” are defined as being anywhere outside the geographical area 

of the 50 United States and the District of Columbia. Therefore, the Commonwealth of Puerto Rico, the U.S. Virgin Islands, the Pacific 

Island Areas (American Samoa, Guam, and the Commonwealth of the Northern Mariana Islands), and all foreign countries are considered to be “outside the United States.” Conversely, “stateside,” “U.S. homeport,” and “U.S. port” are defined as being anywhere in the 

50 United States and the District of Columbia. 4 Military and civilian employees of the U.S. government who are deployed or stationed/assigned outside the United States (and 

their dependents living with them outside the United States) are counted using administrative data provided by the Department of 

Defense and the other federal agencies that employ them. If they are deployed outside the United States (while stationed/assigned in 

the United States), the administrative data are used to count them at their usual residence in the United States. Otherwise, if they are 

stationed/assigned outside the United States, the administrative data are used to count them (and their dependents living with them 

outside the United States) in their home state for apportionment purposes only. 

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6. PEOPLE MOVING INTO OR OUT OF A RESIDENCE AROUND CENSUS DAY

a) People who move into a new residence on or before Census Day—Counted at the new 

residence where they are living on Census Day.

b) People who move out of a residence on Census Day and do not move into a new residence until after Census Day—Counted at the old residence where they were living on 

Census Day.

c) People who move out of a residence before Census Day and do not move into a new 

residence until after Census Day—Counted at the residence where they are staying on 

Census Day. 

7. PEOPLE WHO ARE BORN OR WHO DIE AROUND CENSUS DAY

a) Babies born on or before Census Day—Counted at the residence where they will live 

and sleep most of the time, even if they are still in a hospital on Census Day. 

b) Babies born after Census Day—Not counted in the census. 

c) People who die before Census Day—Not counted in the census. 

d) People who die on or after Census Day—Counted at the residence where they were 

living and sleeping most of the time as of Census Day. 

8. RELATIVES AND NONRELATIVES

a) Babies and children of all ages, including biological, step, and adopted children, as 

well as grandchildren—Counted at the residence where they live and sleep most of 

the time. If they cannot determine a place where they live most of the time, they are 

counted where they are staying on Census Day. (Only count babies born on or before 

Census Day.) 

b) Foster children—Counted at the residence where they live and sleep most of the time. 

If they cannot determine a place where they live most of the time, they are counted 

where they are staying on Census Day. 

c) Spouses and close relatives, such as parents or siblings—Counted at the residence 

where they live and sleep most of the time. If they cannot determine a place where 

they live most of the time, they are counted where they are staying on Census Day. 

d) Extended relatives, such as grandparents, nieces/nephews, aunts/uncles, cousins, or 

in-laws—Counted at the residence where they live and sleep most of the time. If they 

cannot determine a place where they live most of the time, they are counted where 

they are staying on Census Day. 

e) Unmarried partners—Counted at the residence where they live and sleep most of 

the time. If they cannot determine a place where they live most of the time, they are 

counted where they are staying on Census Day. 

f) Housemates or roommates—Counted at the residence where they live and sleep most 

of the time. If they cannot determine a place where they live most of the time, they are 

counted where they are staying on Census Day. 

g) Roomers or boarders—Counted at the residence where they live and sleep most of 

the time. If they cannot determine a place where they live most of the time, they are 

counted where they are staying on Census Day. 

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h) Live-in employees, such as caregivers or domestic workers—Counted at the residence 

where they live and sleep most of the time. If they cannot determine a place where 

they live most of the time, they are counted where they are staying on Census Day. 

i) Other nonrelatives, such as friends—Counted at the residence where they live and 

sleep most of the time. If they cannot determine a place where they live most of the 

time, they are counted where they are staying on Census Day. 

9. PEOPLE IN RESIDENTIAL SCHOOL-RELATED FACILITIES

a) Boarding school students living away from their parents’ or guardians’ home while 

attending boarding school below the college level, including Bureau of Indian Affairs 

boarding schools—Counted at their parents’ or guardians’ home. 

b) Students in residential schools for people with disabilities on Census Day—Counted at 

the school. 

c) Staff members living at boarding schools or residential schools for people with disabilities on Census Day—Counted at the residence where they live and sleep most of 

the time. If they do not have a usual home elsewhere, they are counted at the school. 

10. COLLEGE STUDENTS (AND STAFF LIVING IN COLLEGE HOUSING)

a) College students living at their parents’ or guardians’ home while attending college in 

the United States—Counted at their parents’ or guardians’ home. 

b) College students living away from their parents’ or guardians’ home while attending 

college in the United States (living either on-campus or off-campus)—Counted at the 

on-campus or off-campus residence where they live and sleep most of the time. If they 

are living in college/university student housing (such as dormitories or residence halls) 

on Census Day, they are counted at the college/university student housing. 

c) College students living away from their parents’ or guardians’ home while attending 

college in the United States (living either on-campus or off-campus) but staying at 

their parents’ or guardians’ home while on break or vacation—Counted at the on-campus or off-campus residence where they live and sleep most of the time. If they are 

living in college/university student housing (such as dormitories or residence halls) on 

Census Day, they are counted at the college/university student housing. 

d) College students who are U.S. citizens living outside the United States while attending college outside the United States—Not counted in the stateside census. 

e) College students who are foreign citizens living in the United States while attending 

college in the United States (living either on-campus or off-campus)—Counted at the 

on-campus or off-campus U.S. residence where they live and sleep most of the time. If 

they are living in college/university student housing (such as dormitories or residence 

halls) on Census Day, they are counted at the college/university student housing. 

f) Staff members living in college/university student housing (such as dormitories or 

residence halls) on Census Day—Counted at the residence where they live and sleep 

most of the time. If they do not have a usual home elsewhere, they are counted at the 

college/university student housing. 

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11. PEOPLE IN HEALTH CARE FACILITIES

a) People in general or Veterans Affairs hospitals (except psychiatric units) on Census 

Day, including newborn babies still in the hospital on Census Day—Counted at the 

residence where they live and sleep most of the time. Newborn babies are counted at 

the residence where they will live and sleep most of the time. If patients or staff members do not have a usual home elsewhere, they are counted at the hospital. 

b) People in mental (psychiatric) hospitals and psychiatric units in other hospitals 

(where the primary function is for long-term non-acute care) on Census Day—Patients 

are counted at the facility. Staff members are counted at the residence where they live 

and sleep most of the time. If staff members do not have a usual home elsewhere, they 

are counted at the facility. 

c) People in assisted living facilities5 where care is provided for individuals who need 

help with the activities of daily living but do not need the skilled medical care that is 

provided in a nursing home—Residents and staff members are counted at the residence where they live and sleep most of the time. 

d) People in nursing facilities/skilled-nursing facilities (which provide long-term nonacute care) on Census Day—Patients are counted at the facility. Staff members are 

counted at the residence where they live and sleep most of the time. If staff members 

do not have a usual home elsewhere, they are counted at the facility. 

e) People staying at in-patient hospice facilities on Census Day—Counted at the residence where they live and sleep most of the time. If patients or staff members do not 

have a usual home elsewhere, they are counted at the facility. 

12. PEOPLE IN HOUSING FOR OLDER ADULTS 

a) People in housing intended for older adults, such as active adult communities, independent living, senior apartments, or retirement communities—Residents and staff 

members are counted at the residence where they live and sleep most of the time. 

13. U.S. MILITARY PERSONNEL 

a) U.S. military personnel assigned to military barracks/dormitories in the United States 

on Census Day—Counted at the military barracks/dormitories. 

b) U.S. military personnel (and dependents living with them) living in the United States 

(living either on base or off base) who are not assigned to barracks/dormitories on 

Census Day—Counted at the residence where they live and sleep most of the time. 

c) U.S. military personnel assigned to U.S. military vessels with a U.S. homeport on 

Census Day—Counted at the onshore U.S. residence where they live and sleep most 

of the time. If they have no onshore U.S. residence, they are counted at their vessel’s 

homeport. 

d) People who are active duty patients assigned to a military treatment facility in the 

United States on Census Day—Patients are counted at the facility. Staff members are 

5 Nursing facilities/skilled-nursing facilities, in-patient hospice facilities, assisted living facilities, and housing intended for older 

adults may coexist within the same entity or organization in some cases. For example, an assisted living facility may have a skillednursing floor or wing that meets the nursing facility criteria, which means that specific floor or wing is counted according to the 

guidelines for nursing facilities/skilled-nursing facilities, while the rest of the living quarters in that facility are counted according to the 

guidelines for assisted living facilities. 

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counted at the residence where they live and sleep most of the time. If staff members 

do not have a usual home elsewhere, they are counted at the facility. 

e) People in military disciplinary barracks and jails in the United States on Census Day—

Prisoners are counted at the facility. Staff members are counted at the residence 

where they live and sleep most of the time. If staff members do not have a usual home 

elsewhere, they are counted at the facility. 

f) U.S. military personnel who are deployed outside the United States (while stationed 

in the United States) and are living on or off a military installation outside the United 

States on Census Day—Counted at the U.S. residence where they live and sleep most 

of the time, using administrative data provided by the Department of Defense. 

g) U.S. military personnel who are stationed outside the United States and are living 

on or off a military installation outside the United States on Census Day, as well as 

their dependents living with them outside the United States—Counted as part of the 

U.S. federally affiliated overseas population, using administrative data provided by 

the Department of Defense.

h) U.S. military personnel assigned to U.S. military vessels with a homeport outside the 

United States on Census Day—Counted as part of the U.S. federally affiliated overseas 

population, using administrative data provided by the Department of Defense. 

14. MERCHANT MARINE PERSONNEL ON U.S. FLAG MARITIME/MERCHANT 

VESSELS

a) Crews of U.S. flag maritime/merchant vessels docked in a U.S. port, sailing from one 

U.S. port to another U.S. port, sailing from a U.S. port to a foreign port, or sailing from 

a foreign port to a U.S. port on Census Day—Counted at the onshore U.S. residence 

where they live and sleep most of the time. If they have no onshore U.S. residence, they 

are counted at their vessel. If the vessel is docked in a U.S. port, sailing from a U.S. port 

to a foreign port, or sailing from a foreign port to a U.S. port, crewmembers with no 

onshore U.S. residence are counted at the U.S. port. If the vessel is sailing from one 

U.S. port to another U.S. port, crewmembers with no onshore U.S. residence are 

counted at the port of departure. 

b) Crews of U.S. flag maritime/merchant vessels engaged in U.S. inland waterway transportation on Census Day—Counted at the onshore U.S. residence where they live and 

sleep most of the time. 

c) Crews of U.S. flag maritime/merchant vessels docked in a foreign port or sailing from 

one foreign port to another foreign port on Census Day—Not counted in the stateside 

census. 

15. PEOPLE IN CORRECTIONAL FACILITIES FOR ADULTS

a) People in federal and state prisons on Census Day—Prisoners are counted at the facility. Staff members are counted at the residence where they live and sleep most of the 

time. If staff members do not have a usual home elsewhere, they are counted at the 

facility. 

b) People in local jails and other municipal confinement facilities on Census Day—

Prisoners are counted at the facility. Staff members are counted at the residence 

where they live and sleep most of the time. If staff members do not have a usual home 

elsewhere, they are counted at the facility. 

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c) People in federal detention centers on Census Day, such as Metropolitan Correctional 

Centers, Metropolitan Detention Centers, Bureau of Indian Affairs Detention Centers, 

Immigration and Customs Enforcement (ICE) Service Processing Centers, and ICE 

contract detention facilities—Prisoners are counted at the facility. Staff members are 

counted at the residence where they live and sleep most of the time. If staff members 

do not have a usual home elsewhere, they are counted at the facility.

d) People in correctional residential facilities on Census Day, such as halfway houses, 

restitution centers, and prerelease, work release, and study centers—Residents are 

counted at the facility. Staff members are counted at the residence where they live and 

sleep most of the time. If staff members do not have a usual home elsewhere, they are 

counted at the facility. 

16. PEOPLE IN GROUP HOMES AND RESIDENTIAL TREATMENT CENTERS FOR 

ADULTS

a) People in group homes intended for adults (non-correctional) on Census Day—

Residents are counted at the facility. Staff members are counted at the residence 

where they live and sleep most of the time. If staff members do not have a usual home 

elsewhere, they are counted at the facility. 

b) People in residential treatment centers for adults (non-correctional) on Census Day—

Counted at the residence where they live and sleep most of the time. If residents or 

staff members do not have a usual home elsewhere, they are counted at the facility. 

17. PEOPLE IN JUVENILE FACILITIES

a) People in correctional facilities intended for juveniles on Census Day—Juvenile residents are counted at the facility. Staff members are counted at the residence where 

they live and sleep most of the time. If staff members do not have a usual home elsewhere, they are counted at the facility. 

b) People in group homes for juveniles (non-correctional) on Census Day—Juvenile residents are counted at the facility. Staff members are counted at the residence where 

they live and sleep most of the time. If staff members do not have a usual home elsewhere, they are counted at the facility. 

c) People in residential treatment centers for juveniles (non-correctional) on Census 

Day—Counted at the residence where they live and sleep most of the time. If juvenile 

residents or staff members do not have a usual home elsewhere, they are counted at 

the facility. 

18. PEOPLE IN TRANSITORY LOCATIONS

a) People at transitory locations such as recreational vehicle (RV) parks, campgrounds, 

hotels and motels, hostels, marinas, racetracks, circuses, or carnivals—Anyone, including staff members, staying at the transitory location is counted at the residence where 

they live and sleep most of the time. If they do not have a usual home elsewhere, or 

they cannot determine a place where they live most of the time, they are counted at 

the transitory location. 

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 246

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Residence Criteria and Residence Situations for the 2020 Census of the United States G-9

2020 Census State Redistricting Data (Public Law 94-171) Summary File 

U.S. Census Bureau

19. PEOPLE IN WORKERS’ RESIDENTIAL FACILITIES

a) People in workers’ group living quarters and Job Corps Centers on Census Day—

Counted at the residence where they live and sleep most of the time. If residents or 

staff members do not have a usual home elsewhere, they are counted at the facility. 

20. PEOPLE IN RELIGIOUS-RELATED RESIDENTIAL FACILITIES

a) People in religious group quarters, such as convents and monasteries, on Census 

Day—Counted at the facility. 

21. PEOPLE IN SHELTERS AND PEOPLE EXPERIENCING HOMELESSNESS 

a) People in domestic violence shelters on Census Day—People staying at the shelter 

(who are not staff) are counted at the shelter. Staff members are counted at the residence where they live and sleep most of the time. If staff members do not have a usual 

home elsewhere, they are counted at the shelter. 

b) People who, on Census Day, are in temporary group living quarters established for 

victims of natural disasters—Anyone, including staff members, staying at the facility 

is counted at the residence where they live and sleep most of the time. If they do not 

have a usual home elsewhere, they are counted at the facility. 

c) People who, on Census Day, are in emergency and transitional shelters with sleeping 

facilities for people experiencing homelessness—People staying at the shelter (who 

are not staff) are counted at the shelter. Staff members are counted at the residence 

where they live and sleep most of the time. If staff members do not have a usual home 

elsewhere, they are counted at the shelter. 

d) People who, on Census Day, are at soup kitchens and regularly scheduled mobile 

food vans that provide food to people experiencing homelessness—Counted at the 

residence where they live and sleep most of the time. If they do not have a usual home 

elsewhere, they are counted at the soup kitchen or mobile food van location where 

they are on Census Day. 

e) People who, on Census Day, are at targeted non-sheltered outdoor locations where 

people experiencing homelessness stay without paying—Counted at the outdoor location where they are on Census Day. 

f) People who, on Census Day, are temporarily displaced or experiencing homelessness 

and are staying in a residence for a short or indefinite period of time—Counted at the 

residence where they live and sleep most of the time. If they cannot determine a place 

where they live most of the time, they are counted where they are staying on Census 

Day. 

Case 1:22-cv-24066-KMM Document 171-16 Entered on FLSD Docket 02/02/2024 Page 247

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