DOI: 10.3886/icpsr09952.v3
title: Census of Population and Housing, 1990 [United States]: Public Use Microdata Sample: 5-Percent Sample
title: Version 3

description: The Public Use Microdata Sample (PUMS) 5-Percent Sample 
 contains household and person records for a sample of housing units 
 that received the "long form" of the 1990 Census questionnaire. Data 
 items cover the full range of population and housing information 
 collected in the 1990 Census, including 500 occupation categories, age 
 by single years up to 90, and wages in dollars up to $140,000. Each 
 person identified in the sample has an associated household record, 
 containing information on household characteristics such as type of 
household and family income.
description: A stratified sample, consisting of a sub-sample of the 
 household units that received the 1990 Census "long-form" 
questionnaire (approximately 15.9 percent of all housing units).
description: Datasets: 
DS0: Study-Level Files
DS256: Wyoming: Revised Group Quarters Data
DS1: Alabama
DS2: Alaska
DS4: Arizona
DS5: Arkansas
DS6: California
DS8: Colorado
DS9: Connecticut
DS10: Delaware
DS11: District of Columbia
DS12: Florida
DS13: Georgia
DS15: Hawaii
DS16: Idaho
DS17: Illinois
DS18: Indiana
DS19: Iowa
DS20: Kansas
DS21: Kentucky
DS22: Louisiana
DS23: Maine
DS24: Maryland
DS25: Massachusetts
DS26: Michigan
DS27: Minnesota
DS28: Mississippi
DS29: Missouri
DS30: Montana
DS31: Nebraska
DS32: Nevada
DS33: New Hampshire
DS34: New Jersey
DS35: New Mexico
DS36: New York
DS37: North Carolina
DS38: North Dakota
DS39: Ohio
DS40: Oklahoma
DS41: Oregon
DS42: Pennsylvania
DS44: Rhode Island
DS45: South Carolina
DS46: South Dakota
DS47: Tennessee
DS48: Texas
DS49: Utah
DS50: Vermont
DS51: Virginia
DS53: Washington
DS54: West Virginia
DS55: Wisconsin
DS56: Wyoming
DS72: Puerto Rico
DS84: Geographic Equivalency File for the Entire Nation
DS201: Alabama: Revised Group Quarters Data
DS202: Alaska: Revised Group Quarters Data
DS204: Arizona: Revised Group Quarters Data
DS205: Arkansas: Revised Group Quarters Data
DS206: California: Revised Group Quarters Data
DS208: Colorado: Revised Group Quarters Data
DS209: Connecticut: Revised Group Quarters Data
DS210: Delaware: Revised Group Quarters Data
DS211: District of Columbia: Revised Group Quarters Data
DS212: Florida: Revised Group Quarters Data
DS213: Georgia: Revised Group Quarters Data
DS215: Hawaii: Revised Group Quarters Data
DS216: Idaho: Revised Group Quarters Data
DS217: Illinois: Revised Group Quarters Data
DS218: Indiana: Revised Group Quarters Data
DS219: Iowa: Revised Group Quarters Data
DS220: Kansas: Revised Group Quarters Data
DS221: Kentucky: Revised Group Quarters Data
DS222: Louisiana: Revised Group Quarters Data
DS223: Maine: Revised Group Quarters Data
DS224: Maryland: Revised Group Quarters Data
DS225: Massachusetts: Revised Group Quarters Data
DS226: Michigan: Revised Group Quarters Data
DS227: Minnesota: Revised Group Quarters Data
DS228: Mississippi: Revised Group Quarters Data
DS229: Missouri: Revised Group Quarters Data
DS230: Montana: Revised Group Quarters Data
DS231: Nebraska: Revised Group Quarters Data
DS232: Nevada: Revised Group Quarters Data
DS233: New Hampshire: Revised Group Quarters Data
DS234: New Jersey: Revised Group Quarters Data
DS235: New Mexico: Revised Group Quarters Data
DS236: New York: Revised Group Quarters Data
DS237: North Carolina: Revised Group Quarters Data
DS238: North Dakota: Revised Group Quarters Data
DS239: Ohio: Revised Group Quarters Data
DS240: Oklahoma: Revised Group Quarters Data
DS241: Oregon: Revised Group Quarters Data
DS242: Pennsylvania: Revised Group Quarters Data
DS244: Rhode Island: Revised Group Quarters Data
DS245: South Carolina: Revised Group Quarters Data
DS246: South Dakota: Revised Group Quarters Data
DS247: Tennessee: Revised Group Quarters Data
DS248: Texas: Revised Group Quarters Data
DS249: Utah: Revised Group Quarters Data
DS250: Vermont: Revised Group Quarters Data
DS251: Virginia: Revised Group Quarters Data
DS253: Washington: Revised Group Quarters Data
DS254: West Virginia: Revised Group Quarters Data
DS255: Wisconsin: Revised Group Quarters Data
description: All persons and housing units in the United States.
description: (1) All PUMS files were resupplied by the Census
 Bureau during the summer of 1993 and Group Quarters data were
 resupplied in 1996. ICPSR has incorporated extensive user notes into
 the machine-readable codebook. The Revised Group Quarters data files
 contain group quarters data that supersede those included in the full
 data files (Datasets 0001 through 0056). The group quarters variables
 with errors in the original files are POWSTATE, POWPUMA, MIGSTATE, and
 MIGPUMA. These errors are corrected in the Revised Group Quarters Data
 files. (2) Although all records are 231 characters in length, each
 file is hierarchical in structure, containing a housing unit record
 followed by a variable number of person records. Both record types
 contain approximately 120 variables. Two improvements over the 1980
 PUMS files have been incorporated. First, the housing unit serial
 number is identified on both the housing unit record and on the person
 record, allowing the file to be processed as a rectangular file. In
 addition, each person record is assigned an individual weight,
 allowing users to more closely approximate published reports. Unlike
 previous years, the 1990 PUMS 1-Percent and 5-Percent Samples have not
 been released in separate geographic series (known as "A," "B,"
 etc. records). Instead, each sample has its own set of geographies,
 known as "Public Use Microdata Areas" (PUMAs), established by the
 Census Bureau with assistance from each State Data Center. The PUMAs
 in the 5-Percent Sample are based on counties and places within
 states. Each PUMA is a county or place, or groups thereof, except when
 the county or place contains more than 200,000 inhabitants. In that
 case, the county or place is divided into several PUMAs. PUMAs in this
5-Percent Sample do not cross state lines.