A Technical Document Supporting the

2000 USDA Forest Service RPA Assessment

A Technical Document Supporting the

2000 USDA Forest Service RPA Assessment

U.S. DEPARTMENT OF AGRICULTURE FOREST SERVICE

Ecological Subregion Codes

by County, Coterminous

United States

Ecological Subregion Codes

by County, Coterminous

United States

VICTOR A . RUDIS
December 1999

Southern Research Station

P.O. Box 2680

Asheville, NC 28802

The Author:

Victor A. Rudis is a Research Forester with the Forest

Inventory and Analysis Research Work Unit, Southern

Research Station, U.S. Department of Agriculture,

Forest Service, Starkville, MS 39760–0928.

Cover image:

The image on the front cover illustrates county-scaled ecological section boundaries (white lines) for a satelliteinterpreted image in a portion of eastern Arkansas. Coded ecological sections are 122201, Ozark Highlands; 222201,

Boston Mountains; 123107, Arkansas Valley; 223101, Ouachita Mountains; and 123401, Mississippi Alluvial Basin.

The numbers on front cover correlate to the sections displayed on the title page (opposite).

Title page:

The composite forest density and forest type satellite image used Advanced High Resolution Radiometer (AVHRR)

data described in Powell and others (1993) and AVHRR forest density data documented elsewhere (Zhu 1994).

Bottomland hardwood

≥ 50 percent forest land by forest type:

Loblolly-shortleaf pine

Oak-pine

Oak-hickory

Water or < 10 percent forest land

30 to < 50 percent forest land

10 to < 30 percent forest land

Legend for cover image:
Ecological Subregion Codes by County,

Coterminous United States

Victor A. Rudis
ii

Table of Contents

 Page

Introduction ...................................................................................................................................... 1

Definitions......................................................................................................................................... 2

Ecoregion ........................................................................................................................................ 2

Domain and Division ...................................................................................................................... 2

Polar Domain .................................................................................................................................. 2

Humid Temperate Domain .............................................................................................................. 2

Dry Domain ..................................................................................................................................... 3

Humid Tropical Domain ................................................................................................................. 4

Province .......................................................................................................................................... 4

Section ............................................................................................................................................. 4

Federal Information Processing Standard ..................................................................................... 4

Resources Planning Act Assessment Region ................................................................................ 4

Codes .................................................................................................................................................. 4

Acknowledgements .......................................................................................................................... 13

Literature Cited ............................................................................................................................... 13

Appendix ............................................................................................................................................ 15

Table 1—Codes for political and ecological divisions of the coterminous United

States by State; Resources Planning Act (RPA) region; county, parish, or city; Federal

Information Processing Standard (FIPS); subregion, which is a combination of

mountain (M), province (P), and section codes (S); and the proportion of county,

parish, or city area represented by the coded ecological section ................................................ 17

Table 2—Codes for ecological sections of the coterminous United States by domain,

division, province, and section ....................................................................................................... 91

Figures

Figure 1—Forest Inventory and Analysis survey units, coterminous United States ...................... 1

Figure 2—County-scaled ecological divisions, coterminous United States .................................. 5

Figure 3—County-scaled ecological provinces, coterminous United States ................................ 6

Figure 4—County-scaled ecological section boundaries by State, coterminous United States .... 7

Figure 5—County-scaled ecological sections, Northern United States ........................................ 8

Figure 6—County-scaled ecological sections, Pacific Coast States ............................................. 9

Figure 7—County-scaled ecological sections, Rocky Mountain States ........................................ 10

Figure 8—County-scaled ecological sections, Southern United States......................................... 11

Figure 9—Proportion area in an ecological section by county, coterminous United States ......... 12
1

Abstract

This publication presents the National Hierarchical Framework of

Ecological Units (ECOMAP 1993) by county for the coterminous United

States. Assignment of the framework to individual counties is based on the

predominant area by province and section to facilitate integration of

county-referenced information with areas of uniform ecological potential.

Included are maps illustrating county-scaled ecological subregion

boundaries by division, province, and section; and numeric codes by

Federal Information Processing Standard and USDA Forest Service

Resources Planning Act region.

Keywords: County, ecological potential, ecological subregion, ecoregion,

forest resources, province.

Introduction

In the past, natural resource consultants, planners, and

analysts used off-the-shelf, within-State summaries of

surveys to compile historic, multi-State, and regional

agriculture, economic, hydrologic, timber, or wildlife

statistics for their clients. Today’s natural resource stakeholders often need reports that are far more multipurpose.

Whereas natural resource surveys historically presented

information grouped by primary resources or principal

administrative unit, i.e., owner class, management district,

or resource agency jurisdiction; land managers today need

the means to address an unprecedented variety of complex

and interrelated natural resource issues. They also may be

dealing with several jurisdictions, within which any

number of constraints may be imposed by dominating

natural processes, e.g., regional climate and physiography.

The information presented here groups areas, by county,

that have similar ecological potential.

Traditionally, the U.S. Department of Agriculture, Forest

Service, Forest Inventory and Analysis (FIA) program

grouped counties, by State, into survey sampling units for

forest resource reporting purposes (Hansen and others

1992). These FIA survey units (fig. 1) often conformed to

Federal jurisdictions and State timber resource administrative areas. In a few Eastern and many Western States

(Woudenberg and Farrenkopf 1995), FIA survey units were

counties with similar timber resource density and FIA

sampling intensity. For some portions of the Eastern

United States, FIA survey units were groups of counties

that approximated Fenneman’s (1938) physiographic

classes. At the national level, forest resource assessments

Figure 1—Forest Inventory and Analysis survey units, coterminous United States.
2

often grouped, by State, data that conformed to

Resources Planning Act (RPA) regions, e.g., Powell and

others (1993).

Aggregated inventory data from areas with similar

ecological potential can be useful to a wide variety of

natural resource disciplines. Forest resource information summarized by FIA survey unit, State, or Federal

administrative region may obscure dominating natural

processes that transcend these boundaries, reduce

precision in multi-State resource assessments, and limit

opportunities to identify timber and other resource

production potential. The National Hierarchical Framework of Ecological Units (ECOMAP 1993), drawn at

1:7,500,000 scale, offers an ordered classification of

ecological potential that begins with a global climate

organizational scheme and follows a global-to-local

organizational hierarchy (Bailey 1995, 1996; Bailey and

others 1994; McNab and Avers 1994). Identification of

map units may change in the future as the Forest Service

continues to refine and update ecological mapping units.

Integrating any ecological framework that has been

designed at one scale with data gathered at other scales

is not a straightforward process. This is particularly true

when relating data gathered from ground-based sample

locations to a national framework. Boundaries defining

areas of ecological potential are spatially referenced, but

may not be obvious in aerial photos or existing vegetation. Counties in the United States are logical bases for

integrating such data within a broad ecological framework, because their boundaries are discipline-neutral,

historically established, reinforced through courts of

law, defined with minimum error, and form the backbone

of a nested hierarchy that frames local, regional, and

many national planning and analysis efforts (Rudis

1998).

Definitions

Ecological types and units are developed at various

scales by integrating multiple components that include

climate, physiography, geology, soils, water, and potential natural vegetation. McNab and Avers (1994)

described a hierarchical framework that included

subdivisions that can be coded for use by resource

specialists who are increasingly finding a need to

consider a variety of scales when managing landscapes

within their jurisdiction. The definitions that follow

describe areas ranging from the largest (domain) to the

smallest (section), which Federal, State, and private

landowners can use to better coordinate their land

management efforts.

Ecoregion

An ecoregion is a broad area of regional extent and

includes domain, division, province, and section.

Domain and Division

Domain is an area within an ecoregion that describes a

subcontinental area of broad climatic similarity, which is

affected by latitude and global atmospheric conditions.

In North America, each of four domains was named

according to its principal climatic descriptive feature:

Polar, Humid Temperate, Dry, and Humid Tropical.

Within a domain, a division contains areas of definite

vegetational affinities, e.g., prairie or forest, that fall

within the same regional climate. A division is named for

the main climatic region it describes, e.g., steppe,

savannah, desert, mediterranean, marine, or tundra.

Polar Domain—Located at northern latitudes, polar and

arctic air masses control climates of the Polar Domain.

As a group, these climates have low temperatures, a

severe winter season, and only small amounts of precipitation. Maximum precipitation in all the polar climates

comes in summer. In areas where summers are short and

temperatures are generally low throughout the year,

temperature efficiency rather than effectiveness of

precipitation becomes critical in influencing plant

distribution and soil development. Two major divisions

were recognized and delimited in terms of temperature

efficiency—the tundra and the subarctic (taiga). In the

United States, the Polar Domain occurs only in Alaska.

Humid Temperate Domain—Climates of the Humid

Temperate group are those occupying the zone in which

both tropical and polar air masses are important climatic

factors. The midlatitudes are a belt subject to cyclones;

much of the precipitation in this belt comes from the

lifting of moist air along fronts within those cyclones.

Strong climatic seasons are characteristic of the

midlatitude climates—seasons in which temperatures as

well as precipitation show strong annual cycles. The

Humid Temperate Domain comprises humid, midlatitude

forests of broadleaf deciduous and needleleaf evergreen

trees. The variable importance of winter frost determines six divisions: Warm Continental, Hot Continental,

Subtropical, Marine, Prairie, and Mediterranean.

1. Warm Continental Division—South of the eastern

area of the subarctic climate between latitudes 40o

and 55o N. and extending from the continental

interior to the east coast lies the humid, warm

summer continental climate. Needleleaf and mixed

needleleaf-deciduous forests extend along the entire

length of the colder northern parts of the humid

continental climate zone.
3

2. Hot Continental Division—South of the warm

continental climate lies the humid, hot summer

continental climate. It has the same characteristics

as the warm continental, except that it is more

moderate and has hot summers and cool winters.

Natural vegetation is winter-deciduous forest

dominated by tall, broadleaf trees that provide a

continuous dense canopy in summer but shed their

leaves completely in the winter.

3. Subtropical Division—The humid subtropical

climate, a general pattern characterized by moderate

winters and high humidity (especially in summer)

prevails throughout the southern Atlantic and Gulf

Coast States. Forest is the natural vegetation of most

areas with much of the sandy coastal region of the

Southeastern United States covered by a secondgrowth forest of longleaf, loblolly, and slash pines;

whereas the inland region is deciduous forest.

4. Marine Division—On the Pacific west coast between

latitudes 40o

 and 60o N. is a zone that receives

abundant rainfall from maritime polar air masses and

has a rather narrow range of temperature because it

fronts on the ocean. Natural vegetation of the marine

west coast climate of North America is needleleaf

forest. In the coast range of the Pacific Northwest,

Douglas-fir, western redcedar, and Sitka spruce grow

in magnificent forests. Further inland the high,

snowcapped mountains have a well-marked subalpine

belt. Important trees there are mountain hemlock,

subalpine fir, whitebark pine, and Alaska-cedar. The

alpine zone has a rich flora of shrubs and herbs.

5. Prairie Division—Prairies are typically associated

with continental, midlatitude climates designated as

subhumid, i.e., evapotranspiration and precipitation

almost balance on an average yearly basis and range

between 20 and 40 inches (500 and 1000 millimeters). In summer, air and soil temperatures are high;

soil moisture in the uplands is not adequate for tree

growth and deeper sources of water are beyond the

reach of tree roots. Dominant natural vegetation on

the prairie are tall grasses associated with subdominant broad-leaved herbs. Trees and shrubs are almost

totally absent, but a few may grow as woodland

patches in valleys and other depressions.

6. Mediterranean Division—On the Pacific coast

between latitudes 30o

 and 45o N. is a zone subject to

alternate wet and dry seasons. It is in the transition

zone between the dry west coast desert and the wet

west coast. Occurrence of a wet winter followed by a

dry summer is unique among climate types and produces distinct natural vegetation of hardleaved evergreen trees and shrubs called sclerophyll forest.

Various forms of sclerophyll woodland and scrub are

also typical.

Dry Domain—The essential feature of a dry climate is

that annual losses of water through evapotranspiration at

the Earth’s surface exceed annual water gains from precipitation. This creates a water deficiency. Divisions are

on the basis of rainfall (steppe versus desert) and winter

temperature (cold versus warm). Two dry climates are

commonly recognized—the arid desert and the semiarid

steppe.

In deserts, direct-sun radiation is very strong; outgoing

radiation is similarly strong at night. The vegetation is

dry desert, a class of xerophytic plants widely dispersed

and providing almost negligible ground cover. In dry

periods, the visible vegetation is only small, hardleaved

or spiny shrubs, cacti, or hard grasses. Two desert divisions occur in the United States: Tropical/Subtropical

Desert and Temperate Desert.

In steppes, typical vegetation consists of numerous

species of short grasses and herbs that usually grow in

sparsely distributed bunches. Scattered shrubs and short

trees sometimes grow in the steppe, and all gradations of

cover in semidesert and woodland classes are present.

There are two divisions in the United States: Tropical/

Subtropical Steppe and Temperate Steppe.

1. Tropical/Subtropical Steppe Division—Tropical

steppes border the tropical deserts. Because of

altitude, plateaus and high plains within what would

otherwise be desert have a semiarid steppe climate.

2. Tropical/Subtropical Desert Division—South of the

Arizona-New Mexico mountains are the continental

desert climates which have not only extreme aridity

but also extremely high air and soil temperatures.

3. Temperate Steppe Division—Temperate steppes are

areas that have a semiarid continental climatic regime

in which, despite maximum summer rainfall, evaporation usually exceeds precipitation.

4. Temperate Desert Division—The intermountain

region of the Western United States between the

Pacific coast and Rocky Mountains contains temperate deserts. These areas have low rainfall and strong

temperature contrasts between summer and winter.

Most precipitation falls in winter. Even at intermediate elevations, winters are long and cold.
4

Humid Tropical Domain—The Humid Tropical group

of climates, largely controlled by equatorial and tropical

air masses, is at southern latitudes. There is no winter

season. Average annual rainfall is heavy and exceeds

annual evaporation; however, it varies in amount and in

seasonal and areal distribution. Two types of climates are

differentiated on the basis of the seasonal distribution of

precipitation. Tropical wet or rain forest has ample

rainfall throughout 10 or more months of the year.

Tropical wet-and-dry, or savanna, has a dry season lasting

longer than 2 months.

1. Rain Forest Division—Between the equator and

latitude 10o

 N. lies a region classified as wet equatorial or rain forest. Rainfall is heavy throughout the

year, but monthly averages differ considerably

because of the seasonal shifting of the equatorial

convergence zone and a consequent variation in airmass characteristics. Growth of a rain forest, or selva

vegetation type, which is unsurpassed in luxuriance of

tree growth and number of species, is characteristic

of the equatorial region. Broadleaf trees rise 100 to

150 feet (30 to 45 meters) forming a dense leaf

canopy through which little sunlight reaches the

ground. Giant lianas (woody vines) hang from the

trees. The forest is evergreen, but individual species

have a rhythm of leaf shedding.

2. Savanna Division—The latitude belt between 10o

 and

30o N. is intermediate between the equatorial and

midlatitude climates. This produces the tropical wetdry savanna climate which has a wet season controlled by moist, warm, maritime tropical air masses

at times of high sun, and a dry season controlled by

the continental tropical masses at times of low sun.

This is characterized by open expanses of tall grasses

interspersed with hardy, drought resistant shrubs and

trees. Other areas have savanna woodland, monsoon

forest, thornbush, and tropical scrub.

Province

A province is an area within a division that corresponds

to broad vegetation regions that conform to climatic

subzones. For the purpose of this publication, a province

is defined as either mountain or nonmountain.

Section

A section is a part of a province that has similar

geomorphology, geologic origin, drainage networks,

topography, and regional climate. Subsections, although

not considered in this publication, have similar surficial

geology, soils, regional climate, and potential natural

vegetation communities.

Federal Information Processing Standard

The Federal Information Processing Standard (FIPS) is a

code for States, counties, and county equivalents

(National Bureau of Standards 1980) with revisions for

Virginia counties of Charles City and Charlotte.

Resources Planning Act Assessment Region

The Resources Planning Act (RPA) code groups States,

except Alaska, Hawaii, and U.S. territories, according to

the RPA analysis regions described by Powell and others

(1993):

• 10 Northern

• 11 Northcentral: Illinois, Indiana, Iowa, Michigan,

Minnesota, Missouri, and Wisconsin

• 12 Northeastern: Connecticut, Delaware, Maine,

Maryland, Massachusetts, New Jersey, New York,

Ohio, Pennsylvania, Rhode Island, and West Virginia

• 20 Pacific coast

• 21 Northwest: Oregon and Washington

• 22 Southwest: California

• 30 Rocky Mountain

• 31 Great Plains: Kansas, Nebraska, North Dakota,

and South Dakota

• 32 Intermountain: Arizona, Colorado, Idaho,

Montana, Nevada, New Mexico, Utah, and Wyoming

• 40 Southern

• 41 Southcentral: Alabama, Arkansas, Kentucky,

Louisiana, Mississippi, Oklahoma, Tennessee, and

Texas

• 42 Southeastern: Florida, Georgia, North Carolina,

South Carolina, and Virginia

Codes

A subregion code (appendix table 1) is a six-digit

number that identifies the domain, division, province,

and section assigned to a U.S. county, based on the

predominant ecological province and the predominant

section within that province. The first digit identifies the

area as a mountain (1) or a nonmountain (2) province.

The next three digits identify the domain (100 = Polar,

200 = Humid Temperate, 300 = Dry, and 400 = Humid

Tropical); division, e.g., 210 = Humid Temperate—

Warm Continental; and province, e.g., 212 = Humid

Temperate—Warm Continental—Lauretian Mixed
5

Forest Province. The section, e.g., 212A = Humid

Temperate—Warm Continental—Lauretian Mixed

Forest Province—Aroostook Hills and Lowlands, is

identified by an alpha code in appendix table 2 and a

numeric code in appendix table 1. The numeric codes in

appendix table 1 correspond to alpha codes in appendix

table 2 as follows: 1 = A, 2 = B, 3 = C, 4 = D, 5 = E,

6 = F, 7 = G, 8 = H, 9 = I, 10 = J, 11 = K, 12 = L,

13 = M, and 14 = N. Code numbers and names correspond to the province and section shown on the map

entitled “Ecoregions and subregions of the United

States” (Bailey and others 1994).

Mountain provinces are those exhibiting altitudinal

zonation and the climatic regime of adjacent lowlands. In

appendix table 2, mountain provinces are distinguished

by the first alpha character “M,” e.g., M212A, whereas

no alpha character precedes a nonmountain province,

e.g., 212A.

Within this publication, subregions may constitute a

division, province, or section. Subregion codes correspond to those described by McNab and Avers (1994)

for the coterminous United States. Appendix table 1

lists numbered codes assigned to each county by the

predominant ecological province and predominant

section within that province. Area, by province and

section, was digitized from a 1:7,500,000-scale map and

referenced by a FIPS (National Bureau of Standards

1980) State and county code.

Figures 2 and 3 show ecological subregion codes and

county-scaled boundaries by division and province,

respectively. Figure 4 illustrates section boundaries

within States. Section codes and subregion boundaries

appear in more detail by RPA regions: Northern (fig. 5),

coterminous Pacific coast (fig. 6), Rocky Mountain

(fig. 7), and Southern (fig. 8) United States.

Users should note that subregion resolution by county

was an approximation in counties containing more than

one section. Section predominance was less than 50

percent for a few counties, principally the larger ones

in the Western United States (fig. 9). For this reason, no

attempt was made to link subregions with county

equivalent boroughs of Alaska. Excluded from appendix

table 1 and appendix table 2 were subregions of Alaska,

Hawaii, and U.S. territories. The five counties in the

State of Hawaii were in Section M423A-Hawaiian

Islands. Puerto Rico was in Section M411A-Dry-Humid

Mountains.

Figure 2—County-scaled ecological divisions, coterminous United States.

division

division
6

Figure 3—County-scaled ecological provinces, coterminous United States.

Nonmountain

province

Mountain province
7

Figure 4—County-scaled ecological section boundaries by State, coterminous United States.
8

Figure 5—County-scaled ecological sections, Northern United States. (Divisions: peach = Temperate Steppe, orange = Mountainous Temperate Steppe, light gray = 

pink = Hot Continental, pink = Mountainous Hot Continental, moss green = Warm Continental, yellow-green = Mountainous Warm Continental, and light blue = Sub
9

Figure 6—County-scaled ecological sections, Pacific Coast States. (Divisions: blue-green = Mountainous

Marine, light blue-green = Marine, slate blue = Temperate Desert, orange = Mountainous Temperate Steppe,

peach = Temperate Steppe, yellow = Mountainous Mediterranean, light yellow = Mediterranean, and gray =

Tropical/Subtropical Desert.)
10

Figure 7—County-scaled ecological sections, Rocky Mountain States. (Divisions: slate blue = Temperate Desert, brown = Mountainous

Temperate Desert, orange = Mountainous Temperate Steppe, peach = Temperate Steppe, green = Tropical/Subtropical Steppe, dark

green = Mountainous Tropical/Subtropical Steppe, and gray = Tropical/Subtropical Desert.)
11

Figure 8—County-scaled ecological sections, Southern United States. (Divisions: medium gray = Tropical/Subtropical Desert, green = Tropical/Subtropical Steppe, pelight gray = Prairie, light pink = Hot Continental, pink = Mountainous Hot Continental, light blue = Subtropical, blue = Mountainous Subtropical, and dark gray = Savan
12

Figure 9—Proportion area in an ecological section by county, coterminous United States.
13

Acknowledgments

I thank W. Brad Smith for suggesting the need, Robert G.

Bailey for review comments, and the U.S. Geological

Survey for estimates of ecological subregion areas by

county.

Literature Cited

Bailey, Robert G. 1995. Description of the ecoregions of the United

States. Misc. Publ. 1391. Washington, DC: U.S. Department of

Agriculture, Forest Service. 108 p. + map.

Bailey, Robert G. 1996. Ecosystem geography. New York: SpringerVerlag, Inc. 204 p.

Bailey, Robert G.; Avers, Peter E.; King, Thomas; McNab, W. Henry,

eds. 1994. Ecoregions and subregions of the United States.

Washington, DC: U.S. Department of the Interior, Geological Survey.

1:7,500,000; colored. [Accompanied by a supplementary table of map

unit descriptions compiled and edited by W. Henry McNab and

Robert G. Bailey. Prepared for the U.S. Department of Agriculture,

Forest Service.]

ECOMAP. 1993. National hierarchical framework of ecological units.

Washington, DC: U.S. Department of Agriculture, Forest Service.

20 p.

Fenneman, N.M. 1938. Physiography of Eastern United States. 1st ed.

New York: McGraw-Hill. 714 p.

Hansen, Mark H.; Frieswyk, Thomas; Glover, Joseph F.; Kelly, John F.

1992. The eastwide forest inventory data base. Gen. Tech. Rep. NC151. St. Paul, MN: U.S. Department of Agriculture, Forest Service,

North Central Forest Experiment Station. 48 p.

McNab, William H.; Avers, Peter E. 1994. Ecological subregions of the

United States: section descriptions. WO-WSA-5. Washington, DC:

U.S. Department of Agriculture, Forest Service. 267 p.

National Bureau of Standards. 1980. Counties and county equivalents

of the States of the United States and the District of Columbia. FIPS6-3. American National Standard X3.31-1973. USGPO 304-466.

Washington, DC: U.S. Government Printing Office. 39 p.

Powell, Douglas S.; Faulkner, Joanne L.; Darr, David R. [and others].

1993. Forest resources of the United States, 1992. Revised 1994. Gen.

Tech. Rep. RM-234. Fort Collins, CO: U.S. Department of Agriculture,

Forest Service, Rocky Mountain Forest and Range Experiment

Station. 132 p. + map.

Rudis, Victor A. 1998. Regional forest resource assessment in an

ecological framework: the Southern United States. Natural Areas

Journal. 18(4): 319-332.

Woudenberg, Sharon W.; Farrenkopf, Thomas O. 1995. The westwide

forest inventory data base: user’s manual. Gen. Tech. Rep. INT-GTR317. Ogden, UT: U.S. Department of Agriculture, Forest Service,

Intermountain Research Station. 67 p.

Zhu, Zhiliang. 1994. Forest density mapping in the lower 48 States: a

regression procedure. Res. Pap. SO-280. New Orleans, LA: U.S.

Department of Agriculture, Forest Service, Southern Forest

Experiment Station. 11 p.
14
15

Appendix
16
17

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Alabama 41 Autauga 1001 123102 1 231 2 95.7

41 Baldwin 1003 123202 1 232 2 100.0

41 Barbour 1005 123102 1 231 2 100.0

41 Bibb 1007 123102 1 231 2 82.2

41 Blount 1009 123103 1 231 3 100.0

41 Bullock 1011 123102 1 231 2 100.0

41 Butler 1013 123102 1 231 2 92.7

41 Calhoun 1015 123104 1 231 4 99.4

41 Chambers 1017 123101 1 231 1 100.0

41 Cherokee 1019 123103 1 231 3 64.7

41 Chilton 1021 123102 1 231 2 47.7

41 Choctaw 1023 123102 1 231 2 97.9

41 Clarke 1025 123102 1 231 2 67.9

41 Clay 1027 123104 1 231 4 64.3

41 Cleburne 1029 123104 1 231 4 86.8

41 Coffee 1031 123202 1 232 2 67.0

41 Colbert 1033 123102 1 231 2 51.1

41 Conecuh 1035 123202 1 232 2 89.9

41 Coosa 1037 123104 1 231 4 50.5

41 Covington 1039 123202 1 232 2 99.7

41 Crenshaw 1041 123102 1 231 2 94.0

41 Cullman 1043 123103 1 231 3 100.0

41 Dale 1045 123102 1 231 2 51.3

41 Dallas 1047 123102 1 231 2 100.0

41 DeKalb 1049 123103 1 231 3 98.5

41 Elmore 1051 123102 1 231 2 55.4

41 Escambia 1053 123202 1 232 2 100.0

41 Etowah 1055 123103 1 231 3 95.7

41 Fayette 1057 123102 1 231 2 88.8

41 Franklin 1059 123102 1 231 2 67.9

41 Geneva 1061 123202 1 232 2 100.0

41 Greene 1063 123102 1 231 2 100.0

41 Hale 1065 123102 1 231 2 100.0

41 Henry 1067 123102 1 231 2 66.7

41 Houston 1069 123202 1 232 2 100.0

41 Jackson 1071 122108 1 221 8 59.4

41 Jefferson 1073 123103 1 231 3 94.8

41 Lamar 1075 123102 1 231 2 100.0

41 Lauderdale 1077 122205 1 222 5 52.4

41 Lawrence 1079 122205 1 222 5 53.1

41 Lee 1081 123101 1 231 1 100.0

41 Limestone 1083 122205 1 222 5 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section
18

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Alabama (cont.) 41 Lowndes 1085 123102 1 231 2 100.0

41 Macon 1087 123102 1 231 2 81.5

41 Madison 1089 122205 1 222 5 97.3

41 Marengo 1091 123102 1 231 2 100.0

41 Marion 1093 123102 1 231 2 98.1

41 Marshall 1095 123103 1 231 3 94.2

41 Mobile 1097 123202 1 232 2 100.0

41 Monroe 1099 123202 1 232 2 52.3

41 Montgomery 1101 123102 1 231 2 100.0

41 Morgan 1103 123103 1 231 3 66.8

41 Perry 1105 123102 1 231 2 100.0

41 Pickens 1107 123102 1 231 2 100.0

41 Pike 1109 123102 1 231 2 100.0

41 Randolph 1111 123101 1 231 1 94.7

41 Russell 1113 123102 1 231 2 69.6

41 St. Clair 1115 123103 1 231 3 50.9

41 Shelby 1117 123104 1 231 4 94.5

41 Sumter 1119 123102 1 231 2 100.0

41 Talladega 1121 123104 1 231 4 100.0

41 Tallapoosa 1123 123101 1 231 1 97.1

41 Tuscaloosa 1125 123102 1 231 2 79.9

41 Walker 1127 123103 1 231 3 92.9

41 Washington 1129 123202 1 232 2 99.8

41 Wilcox 1131 123102 1 231 2 100.0

41 Winston 1133 123103 1 231 3 79.5

Arizona 32 Apache 4001 131302 1 313 2 47.0

32 Cochise 4003 132101 1 321 1 100.0

32 Coconino 4005 131301 1 313 1 33.3

32 Gila 4007 131303 1 313 3 63.5

32 Graham 4009 132101 1 321 1 51.5

32 Greenlee 4011 132101 1 321 1 50.5

32 La Paz 4012 132202 1 322 2 99.8

32 Maricopa 4013 132202 1 322 2 86.5

32 Mohave 4015 132201 1 322 1 43.5

32 Navajo 4017 131302 1 313 2 43.3

32 Pima 4019 132202 1 322 2 90.9

32 Pinal 4021 132202 1 322 2 94.1

32 Santa Cruz 4023 132202 1 322 2 51.6

32 Yavapai 4025 131303 1 313 3 77.9

32 Yuma 4027 132202 1 322 2 85.7

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
19

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Arkansas 41 Arkansas 5001 123401 1 234 1 100.0

41 Ashley 5003 123401 1 234 1 55.6

41 Benton 5007 122201 1 222 1 100.0

41 Boone 5009 122201 1 222 1 100.0

41 Bradley 5011 123105 1 231 5 100.0

41 Calhoun 5013 123105 1 231 5 100.0

41 Carroll 5015 122201 1 222 1 100.0

41 Chicot 5017 123401 1 234 1 100.0

41 Clark 5019 123105 1 231 5 63.5

41 Clay 5021 123401 1 234 1 98.1

41 Cleburne 5023 222201 2 222 1 79.4

41 Cleveland 5025 123105 1 231 5 100.0

41 Columbia 5027 123105 1 231 5 100.0

41 Conway 5029 123107 1 231 7 95.0

41 Craighead 5031 123401 1 234 1 100.0

41 Crawford 5033 222201 2 222 1 99.9

41 Crittenden 5035 123401 1 234 1 100.0

41 Cross 5037 123401 1 234 1 100.0

41 Dallas 5039 123105 1 231 5 100.0

41 Desha 5041 123401 1 234 1 100.0

41 Drew 5043 123105 1 231 5 58.4

41 Faulkner 5045 123107 1 231 7 99.7

41 Franklin 5047 222201 2 222 1 74.7

41 Fulton 5049 122201 1 222 1 100.0

41 Garland 5051 223101 2 231 1 100.0

41 Grant 5053 123105 1 231 5 99.9

41 Greene 5055 123401 1 234 1 100.0

41 Hempstead 5057 123105 1 231 5 93.3

41 Hot Spring 5059 223101 2 231 1 75.3

41 Howard 5061 223101 2 231 1 51.6

41 Independence 5063 122201 1 222 1 65.9

41 Izard 5065 122201 1 222 1 100.0

41 Jackson 5067 123401 1 234 1 97.1

41 Jefferson 5069 123401 1 234 1 58.7

41 Johnson 5071 222201 2 222 1 94.0

41 Lafayette 5073 123105 1 231 5 51.1

41 Lawrence 5075 123401 1 234 1 56.0

41 Lee 5077 123401 1 234 1 100.0

41 Lincoln 5079 123401 1 234 1 55.3

41 Little River 5081 123105 1 231 5 92.4

41 Logan 5083 123107 1 231 7 99.4

41 Lonoke 5085 123401 1 234 1 57.8

41 Madison 5087 222201 2 222 1 56.9

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
20

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Arkansas (cont.) 41 Marion 5089 122201 1 222 1 100.0

41 Miller 5091 123105 1 231 5 52.3

41 Mississippi 5093 123401 1 234 1 100.0

41 Monroe 5095 123401 1 234 1 100.0

41 Montgomery 5097 223101 2 231 1 100.0

41 Nevada 5099 123105 1 231 5 100.0

41 Newton 5101 222201 2 222 1 79.8

41 Ouachita 5103 123105 1 231 5 100.0

41 Perry 5105 123107 1 231 7 52.8

41 Phillips 5107 123401 1 234 1 100.0

41 Pike 5109 223101 2 231 1 67.3

41 Poinsett 5111 123401 1 234 1 100.0

41 Polk 5113 223101 2 231 1 100.0

41 Pope 5115 222201 2 222 1 59.7

41 Prairie 5117 123401 1 234 1 67.7

41 Pulaski 5119 223101 2 231 1 38.7

41 Randolph 5121 122201 1 222 1 81.8

41 St. Francis 5123 123401 1 234 1 100.0

41 Saline 5125 223101 2 231 1 82.1

41 Scott 5127 123107 1 231 7 60.8

41 Searcy 5129 122201 1 222 1 76.8

41 Sebastian 5131 123107 1 231 7 87.4

41 Sevier 5133 123105 1 231 5 59.3

41 Sharp 5135 122201 1 222 1 100.0

41 Stone 5137 122201 1 222 1 97.7

41 Union 5139 123105 1 231 5 100.0

41 Van Buren 5141 222201 2 222 1 81.7

41 Washington 5143 122201 1 222 1 65.3

41 White 5145 123107 1 231 7 60.3

41 Woodruff 5147 123401 1 234 1 100.0

41 Yell 5149 123107 1 231 7 70.3

California 22 Alameda 6001 126101 1 261 1 62.2

22 Alpine 6003 226105 2 261 5 92.3

22 Amador 6005 226106 2 261 6 52.9

22 Butte 6007 226106 2 261 6 43.6

22 Calaveras 6009 226106 2 261 6 52.8

22 Colusa 6011 126201 1 262 1 55.7

22 Contra Costa 6013 126101 1 261 1 45.4

22 Del Norte 6015 226101 2 261 1 68.1

22 El Dorado 6017 226105 2 261 5 77.9

22 Fresno 6019 126201 1 262 1 40.4

22 Glenn 6021 126201 1 262 1 50.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
21

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

California (cont.) 22 Humboldt 6023 226102 2 261 2 34.9

 22 Imperial 6025 132203 1 322 3 70.2

22 Inyo 6027 132201 1 322 1 75.6

22 Kern 6029 226106 2 261 6 19.9

22 Kings 6031 126201 1 262 1 80.8

22 Lake 6033 226102 2 261 2 81.5

22 Lassen 6035 226107 2 261 7 58.2

22 Los Angeles 6037 226202 2 262 2 65.5

22 Madera 6039 226105 2 261 5 34.0

22 Marin 6041 126301 1 263 1 98.4

22 Mariposa 6043 226105 2 261 5 47.4

22 Mendocino 6045 226102 2 261 2 60.4

22 Merced 6047 126201 1 262 1 73.8

22 Modoc 6049 226107 2 261 7 86.1

22 Mono 6051 134104 1 341 4 74.4

22 Monterey 6053 226201 2 262 1 64.9

22 Napa 6055 226103 2 261 3 46.0

22 Nevada 6057 226105 2 261 5 78.3

22 Orange 6059 126102 1 261 2 84.7

22 Placer 6061 226105 2 261 5 69.8

22 Plumas 6063 226105 2 261 5 87.4

22 Riverside 6065 132202 1 322 2 35.2

22 Sacramento 6067 126201 1 262 1 95.6

22 San Benito 6069 226201 2 262 1 90.9

22 San Bernardino 6071 132201 1 322 1 83.9

22 San Diego 6073 226202 2 262 2 76.6

22 San Francisco 6075 126101 1 261 1 100.0

22 San Joaquin 6077 126201 1 262 1 87.9

22 San Luis Obispo 6079 226201 2 262 1 74.4

22 San Mateo 6081 126101 1 261 1 100.0

22 Santa Barbara 6083 226201 2 262 1 46.9

22 Santa Clara 6085 126101 1 261 1 75.3

22 Santa Cruz 6087 126101 1 261 1 100.0

22 Shasta 6089 226104 2 261 4 33.8

22 Sierra 6091 226105 2 261 5 96.0

22 Siskiyou 6093 226101 2 261 1 52.8

22 Solano 6095 126201 1 262 1 82.0

22 Sonoma 6097 226102 2 261 2 51.4

22 Stanislaus 6099 126201 1 262 1 64.8

22 Sutter 6101 126201 1 262 1 100.0

22 Tehama 6103 226103 2 261 3 21.0

22 Trinity 6105 226101 2 261 1 82.0

22 Tulare 6107 226105 2 261 5 46.2

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
22

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

California (cont.) 22 Tuolumne 6109 226105 2 261 5 78.4

 22 Ventura 6111 226201 2 262 1 29.5

22 Yolo 6113 126201 1 262 1 74.9

22 Yuba 6115 226106 2 261 6 45.1

Colorado 32 Adams 8001 133108 1 331 8 99.0

32 Alamosa 8003 133110 1 331 10 91.7

32 Arapahoe 8005 133109 1 331 9 67.7

32 Archuleta 8007 233107 2 331 7 91.6

32 Baca 8009 133109 1 331 9 67.4

32 Bent 8011 133109 1 331 9 98.2

32 Boulder 8013 233109 2 331 9 88.0

32 Chaffee 8015 233108 2 331 8 76.1

32 Cheyenne 8017 133108 1 331 8 66.4

32 Clear Creek 8019 233109 2 331 9 100.0

32 Conejos 8021 233107 2 331 7 77.2

32 Costilla 8023 133110 1 331 10 86.9

32 Crowley 8025 133109 1 331 9 100.0

32 Custer 8027 233106 2 331 6 100.0

32 Delta 8029 233108 2 331 8 59.2

32 Denver 8031 133108 1 331 8 95.9

32 Dolores 8033 233107 2 331 7 66.0

32 Douglas 8035 233109 2 331 9 54.1

32 Eagle 8037 233108 2 331 8 88.1

32 Elbert 8039 133109 1 331 9 99.8

32 El Paso 8041 133109 1 331 9 79.9

32 Fremont 8043 233109 2 331 9 45.2

32 Garfield 8045 234102 2 341 2 55.2

32 Gilpin 8047 233109 2 331 9 100.0

32 Grand 8049 233109 2 331 9 92.7

32 Gunnison 8051 233108 2 331 8 68.2

32 Hinsdale 8053 233107 2 331 7 100.0

32 Huerfano 8055 233106 2 331 6 59.7

32 Jackson 8057 233109 2 331 9 91.5

32 Jefferson 8059 233109 2 331 9 96.0

32 Kiowa 8061 133108 1 331 8 75.6

32 Kit Carson 8063 133108 1 331 8 62.9

32 Lake 8065 233108 2 331 8 87.7

32 La Plata 8067 233107 2 331 7 70.5

32 Larimer 8069 233109 2 331 9 88.0

32 Mesa 8077 233107 2 331 7 29.4

32 Mineral 8079 233107 2 331 7 100.0

32 Moffat 8081 134207 1 342 7 51.5

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
23

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Colorado (cont.) 32 Montezuma 8083 131301 1 313 1 63.7

 32 Montrose 8085 134102 1 341 2 61.1

32 Morgan 8087 133108 1 331 8 100.0

32 Otero 8089 133109 1 331 9 100.0

32 Ouray 8091 233107 2 331 7 97.2

32 Park 8093 233109 2 331 9 99.8

32 Phillips 8095 133103 1 331 3 100.0

32 Pitkin 8097 233108 2 331 8 100.0

32 Prowers 8099 133109 1 331 9 85.7

32 Pueblo 8101 133109 1 331 9 92.4

32 Rio Blanco 8103 234102 2 341 2 70.4

32 Rio Grande 8105 233107 2 331 7 95.4

32 Routt 8107 233108 2 331 8 91.8

32 Saguache 8109 233107 2 331 7 75.2

32 San Juan 8111 233107 2 331 7 100.0

32 San Miguel 8113 233107 2 331 7 54.0

32 Sedgwick 8115 133103 1 331 3 100.0

32 Summit 8117 233109 2 331 9 100.0

32 Teller 8119 233109 2 331 9 100.0

32 Washington 8121 133108 1 331 8 95.8

32 Weld 8123 133108 1 331 8 100.0

32 Yuma 8125 133103 1 331 3 96.6

Connecticut 12 Fairfield 9001 122101 1 221 1 100.0

12 Hartford 9003 122101 1 221 1 93.1

12 Litchfield 9005 122101 1 221 1 82.9

12 Middlesex 9007 122101 1 221 1 100.0

12 New Haven 9009 122101 1 221 1 100.0

12 New London 9011 122101 1 221 1 100.0

12 Tolland 9013 122101 1 221 1 100.0

12 Windham 9015 122101 1 221 1 100.0

Delaware 12 Kent 10001 123201 1 232 1 95.7

 12 New Castle 10003 122103 1 221 3 70.2

12 Sussex 10005 123201 1 232 1 100.0

District of Columbia 12 Washington 11001 123101 1 231 1 100.0

Florida 42 Bay 12005 123204 1 232 4 96.7

42 Bradford 12007 123202 1 232 2 100.0

42 Brevard 12009 123207 1 232 7 87.3

42 Broward 12011 141101 1 411 1 100.0

42 Calhoun 12013 123204 1 232 4 74.4

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
24

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Florida (cont.) 42 Charlotte 12015 123204 1 232 4 69.2

 42 Citrus 12017 123202 1 232 2 67.8

42 Clay 12019 123202 1 232 2 96.3

42 Collier 12021 141101 1 411 1 79.1

42 Columbia 12023 123202 1 232 2 100.0

42 Dade 12025 141101 1 411 1 100.0

42 De Soto 12027 123202 1 232 2 86.1

42 Dixie 12029 123204 1 232 4 99.9

42 Duval 12031 123207 1 232 7 89.4

42 Escambia 12033 123202 1 232 2 58.4

42 Flagler 12035 123207 1 232 7 77.9

42 Franklin 12037 123204 1 232 4 100.0

42 Gadsden 12039 123202 1 232 2 93.9

42 Gilchrist 12041 123202 1 232 2 93.7

42 Glades 12043 123202 1 232 2 84.4

42 Gulf 12045 123204 1 232 4 100.0

42 Hamilton 12047 123202 1 232 2 100.0

42 Hardee 12049 123202 1 232 2 100.0

42 Hendry 12051 123202 1 232 2 60.4

42 Hernando 12053 123202 1 232 2 63.7

42 Highlands 12055 123202 1 232 2 100.0

42 Hillsborough 12057 123202 1 232 2 55.2

42 Holmes 12059 123202 1 232 2 100.0

42 Indian River 12061 123207 1 232 7 67.9

42 Jackson 12063 123202 1 232 2 100.0

42 Jefferson 12065 123202 1 232 2 66.6

42 Lafayette 12067 123204 1 232 4 93.3

42 Lake 12069 123202 1 232 2 100.0

42 Lee 12071 123204 1 232 4 98.6

42 Leon 12073 123202 1 232 2 59.1

42 Levy 12075 123202 1 232 2 53.3

42 Liberty 12077 123204 1 232 4 93.3

42 Madison 12079 123202 1 232 2 91.4

42 Manatee 12081 123204 1 232 4 75.9

42 Marion 12083 123202 1 232 2 100.0

42 Martin 12085 123207 1 232 7 63.5

42 Monroe 12087 141101 1 411 1 100.0

42 Nassau 12089 123207 1 232 7 97.3

42 Okaloosa 12091 123202 1 232 2 74.3

42 Okeechobee 12093 123202 1 232 2 88.5

42 Orange 12095 123202 1 232 2 94.0

42 Osceola 12097 123202 1 232 2 99.4

42 Palm Beach 12099 141101 1 411 1 77.4

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
25

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Florida (cont.) 42 Pasco 12101 123202 1 232 2 53.6

 42 Pinellas 12103 123204 1 232 4 100.0

42 Polk 12105 123202 1 232 2 100.0

42 Putnam 12107 123202 1 232 2 100.0

42 St. Johns 12109 123207 1 232 7 87.8

42 St. Lucie 12111 123207 1 232 7 87.6

42 Santa Rosa 12113 123202 1 232 2 63.9

42 Sarasota 12115 123204 1 232 4 100.0

42 Seminole 12117 123202 1 232 2 90.9

42 Sumter 12119 123202 1 232 2 100.0

42 Suwannee 12121 123202 1 232 2 91.5

42 Taylor 12123 123204 1 232 4 100.0

42 Union 12125 123202 1 232 2 100.0

42 Volusia 12127 123207 1 232 7 59.0

42 Wakulla 12129 123204 1 232 4 100.0

42 Walton 12131 123202 1 232 2 70.7

42 Washington 12133 123202 1 232 2 76.0

Georgia 42 Appling 13001 123202 1 232 2 86.6

42 Atkinson 13003 123202 1 232 2 100.0

42 Bacon 13005 123202 1 232 2 100.0

42 Baker 13007 123202 1 232 2 100.0

42 Baldwin 13009 123101 1 231 1 100.0

42 Banks 13011 123101 1 231 1 100.0

42 Barrow 13013 123101 1 231 1 100.0

42 Bartow 13015 123104 1 231 4 92.0

42 Ben Hill 13017 123202 1 232 2 100.0

42 Berrien 13019 123202 1 232 2 100.0

42 Bibb 13021 123101 1 231 1 100.0

42 Bleckley 13023 123101 1 231 1 67.1

42 Brantley 13025 123203 1 232 3 95.8

42 Brooks 13027 123202 1 232 2 100.0

42 Bryan 13029 123203 1 232 3 100.0

42 Bulloch 13031 123202 1 232 2 74.0

42 Burke 13033 123202 1 232 2 66.8

42 Butts 13035 123101 1 231 1 100.0

42 Calhoun 13037 123202 1 232 2 100.0

42 Camden 13039 123207 1 232 7 66.7

42 Candler 13043 123202 1 232 2 100.0

42 Carroll 13045 123101 1 231 1 100.0

42 Catoosa 13047 123103 1 231 3 49.7

42 Charlton 13049 123207 1 232 7 56.8

42 Chatham 13051 123203 1 232 3 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
26

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Georgia (cont.) 42 Chattahoochee 13053 123101 1 231 1 66.2

 42 Chattooga 13055 123103 1 231 3 86.0

42 Cherokee 13057 222104 2 221 4 99.9

42 Clarke 13059 123101 1 231 1 100.0

42 Clay 13061 123102 1 231 2 73.2

42 Clayton 13063 123101 1 231 1 100.0

42 Clinch 13065 123202 1 232 2 100.0

42 Cobb 13067 123101 1 231 1 95.6

42 Coffee 13069 123202 1 232 2 100.0

42 Colquitt 13071 123202 1 232 2 100.0

42 Columbia 13073 123101 1 231 1 100.0

42 Cook 13075 123202 1 232 2 100.0

42 Coweta 13077 123101 1 231 1 100.0

42 Crawford 13079 123101 1 231 1 100.0

42 Crisp 13081 123202 1 232 2 100.0

42 Dade 13083 122108 1 221 8 63.5

42 Dawson 13085 222104 2 221 4 98.4

42 Decatur 13087 123202 1 232 2 100.0

42 DeKalb 13089 123101 1 231 1 100.0

42 Dodge 13091 123202 1 232 2 100.0

42 Dooly 13093 123202 1 232 2 88.8

42 Dougherty 13095 123202 1 232 2 100.0

42 Douglas 13097 123101 1 231 1 100.0

42 Early 13099 123202 1 232 2 100.0

42 Echols 13101 123202 1 232 2 100.0

42 Effingham 13103 123203 1 232 3 95.2

42 Elbert 13105 123101 1 231 1 100.0

42 Emanuel 13107 123202 1 232 2 100.0

42 Evans 13109 123202 1 232 2 77.4

42 Fannin 13111 222104 2 221 4 100.0

42 Fayette 13113 123101 1 231 1 100.0

42 Floyd 13115 123104 1 231 4 95.8

42 Forsyth 13117 123101 1 231 1 72.6

42 Franklin 13119 123101 1 231 1 100.0

42 Fulton 13121 123101 1 231 1 96.4

42 Gilmer 13123 222104 2 221 4 100.0

42 Glascock 13125 123101 1 231 1 100.0

42 Glynn 13127 123203 1 232 3 100.0

42 Gordon 13129 123104 1 231 4 95.8

42 Grady 13131 123202 1 232 2 100.0

42 Greene 13133 123101 1 231 1 100.0

42 Gwinnett 13135 123101 1 231 1 100.0

42 Habersham 13137 222104 2 221 4 92.1

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
27

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Georgia (cont.) 42 Hall 13139 123101 1 231 1 87.0

 42 Hancock 13141 123101 1 231 1 100.0

42 Haralson 13143 123104 1 231 4 74.5

42 Harris 13145 123101 1 231 1 100.0

42 Hart 13147 123101 1 231 1 100.0

42 Heard 13149 123101 1 231 1 100.0

42 Henry 13151 123101 1 231 1 100.0

42 Houston 13153 123101 1 231 1 96.6

42 Irwin 13155 123202 1 232 2 100.0

42 Jackson 13157 123101 1 231 1 100.0

42 Jasper 13159 123101 1 231 1 100.0

42 Jeff Davis 13161 123202 1 232 2 100.0

42 Jefferson 13163 123101 1 231 1 81.2

42 Jenkins 13165 123202 1 232 2 100.0

42 Johnson 13167 123202 1 232 2 69.5

42 Jones 13169 123101 1 231 1 100.0

42 Lamar 13171 123101 1 231 1 100.0

42 Lanier 13173 123202 1 232 2 100.0

42 Laurens 13175 123202 1 232 2 74.5

42 Lee 13177 123202 1 232 2 100.0

42 Liberty 13179 123203 1 232 3 100.0

42 Lincoln 13181 123101 1 231 1 100.0

42 Long 13183 123203 1 232 3 100.0

42 Lowndes 13185 123202 1 232 2 100.0

42 Lumpkin 13187 222104 2 221 4 100.0

42 McDuffie 13189 123101 1 231 1 100.0

42 McIntosh 13191 123203 1 232 3 100.0

42 Macon 13193 123101 1 231 1 87.8

42 Madison 13195 123101 1 231 1 100.0

42 Marion 13197 123101 1 231 1 68.8

42 Meriwether 13199 123101 1 231 1 100.0

42 Miller 13201 123202 1 232 2 100.0

42 Mitchell 13205 123202 1 232 2 100.0

42 Monroe 13207 123101 1 231 1 100.0

42 Montgomery 13209 123202 1 232 2 100.0

42 Morgan 13211 123101 1 231 1 100.0

42 Murray 13213 123104 1 231 4 74.2

42 Muscogee 13215 123101 1 231 1 100.0

42 Newton 13217 123101 1 231 1 100.0

42 Oconee 13219 123101 1 231 1 100.0

42 Oglethorpe 13221 123101 1 231 1 100.0

42 Paulding 13223 123101 1 231 1 54.5

42 Peach 13225 123101 1 231 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
28

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Georgia (cont.) 42 Pickens 13227 222104 2 221 4 100.0

 42 Pierce 13229 123202 1 232 2 52.6

42 Pike 13231 123101 1 231 1 100.0

42 Polk 13233 123104 1 231 4 100.0

42 Pulaski 13235 123202 1 232 2 94.1

42 Putnam 13237 123101 1 231 1 100.0

42 Quitman 13239 123102 1 231 2 100.0

42 Rabun 13241 222104 2 221 4 100.0

42 Randolph 13243 123102 1 231 2 84.1

42 Richmond 13245 123101 1 231 1 100.0

42 Rockdale 13247 123101 1 231 1 100.0

42 Schley 13249 123102 1 231 2 57.8

42 Screven 13251 123202 1 232 2 100.0

42 Seminole 13253 123202 1 232 2 100.0

42 Spalding 13255 123101 1 231 1 100.0

42 Stephens 13257 222104 2 221 4 58.1

42 Stewart 13259 123102 1 231 2 100.0

42 Sumter 13261 123102 1 231 2 56.9

42 Talbot 13263 123101 1 231 1 100.0

42 Taliaferro 13265 123101 1 231 1 100.0

42 Tattnall 13267 123202 1 232 2 78.2

42 Taylor 13269 123101 1 231 1 100.0

42 Telfair 13271 123202 1 232 2 100.0

42 Terrell 13273 123202 1 232 2 69.8

42 Thomas 13275 123202 1 232 2 100.0

42 Tift 13277 123202 1 232 2 100.0

42 Toombs 13279 123202 1 232 2 100.0

42 Towns 13281 222104 2 221 4 100.0

42 Treutlen 13283 123202 1 232 2 100.0

42 Troup 13285 123101 1 231 1 100.0

42 Turner 13287 123202 1 232 2 100.0

42 Twiggs 13289 123101 1 231 1 100.0

42 Union 13291 222104 2 221 4 100.0

42 Upson 13293 123101 1 231 1 100.0

42 Walker 13295 123103 1 231 3 77.4

42 Walton 13297 123101 1 231 1 100.0

42 Ware 13299 123202 1 232 2 96.6

42 Warren 13301 123101 1 231 1 100.0

42 Washington 13303 123101 1 231 1 99.8

42 Wayne 13305 123203 1 232 3 100.0

42 Webster 13307 123102 1 231 2 100.0

42 Wheeler 13309 123202 1 232 2 100.0

42 White 13311 222104 2 221 4 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
29

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Georgia (cont.) 42 Whitfield 13313 123104 1 231 4 81.8

 42 Wilcox 13315 123202 1 232 2 100.0

42 Wilkes 13317 123101 1 231 1 100.0

42 Wilkinson 13319 123101 1 231 1 100.0

42 Worth 13321 123202 1 232 2 100.0

Idaho 31 Ada 16001 134203 1 342 3 100.0

31 Adams 16003 233207 2 332 7 36.3

31 Bannock 16005 134202 1 342 2 77.5

31 Bear Lake 16007 233104 2 331 4 68.9

31 Benewah 16009 233304 2 333 4 80.5

31 Bingham 16011 134204 1 342 4 71.6

31 Blaine 16013 233206 2 332 6 46.7

31 Boise 16015 233201 2 332 1 93.7

31 Bonner 16017 233301 2 333 1 72.4

31 Bonneville 16019 233104 2 331 4 50.5

31 Boundary 16021 233301 2 333 1 77.1

31 Butte 16023 233205 2 332 5 50.7

31 Camas 16025 233201 2 332 1 41.4

31 Canyon 16027 134203 1 342 3 100.0

31 Caribou 16029 233104 2 331 4 74.5

31 Cassia 16031 134202 1 342 2 94.4

31 Clark 16033 233205 2 332 5 74.9

31 Clearwater 16035 233304 2 333 4 90.5

31 Custer 16037 233206 2 332 6 71.1

31 Elmore 16039 134203 1 342 3 58.9

31 Franklin 16041 233104 2 331 4 74.1

31 Fremont 16043 134204 1 342 4 68.2

31 Gem 16045 134203 1 342 3 89.9

31 Gooding 16047 134203 1 342 3 78.8

31 Idaho 16049 233201 2 332 1 69.8

31 Jefferson 16051 134204 1 342 4 93.0

31 Jerome 16053 134204 1 342 4 57.8

31 Kootenai 16055 233304 2 333 4 61.8

31 Latah 16057 133101 1 331 1 60.6

31 Lemhi 16059 233205 2 332 5 62.5

31 Lewis 16061 133101 1 331 1 100.0

31 Lincoln 16063 134204 1 342 4 97.2

31 Madison 16065 134204 1 342 4 65.2

31 Minidoka 16067 134204 1 342 4 90.0

31 Nez Perce 16069 133101 1 331 1 91.0

31 Oneida 16071 134202 1 342 2 100.0

31 Owyhee 16073 134203 1 342 3 97.3

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
30

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Idaho (cont.) 31 Payette 16075 134203 1 342 3 100.0

 31 Power 16077 134202 1 342 2 66.2

31 Shoshone 16079 233304 2 333 4 100.0

31 Teton 16081 233104 2 331 4 56.6

31 Twin Falls 16083 134203 1 342 3 55.0

31 Valley 16085 233201 2 332 1 94.9

31 Washington 16087 134203 1 342 3 90.5

Illinois 11 Adams 17001 125104 1 251 4 68.7

11 Alexander 17003 122201 1 222 1 43.0

11 Bond 17005 122207 1 222 7 100.0

11 Boone 17007 122211 1 222 11 100.0

11 Brown 17009 125104 1 251 4 100.0

11 Bureau 17011 125104 1 251 4 100.0

11 Calhoun 17013 125103 1 251 3 94.7

11 Carroll 17015 125104 1 251 4 75.1

11 Cass 17017 125104 1 251 4 100.0

11 Champaign 17019 125104 1 251 4 100.0

11 Christian 17021 125104 1 251 4 95.8

11 Clark 17023 122207 1 222 7 100.0

11 Clay 17025 122207 1 222 7 100.0

11 Clinton 17027 122207 1 222 7 100.0

11 Coles 17029 125104 1 251 4 79.9

11 Cook 17031 122211 1 222 11 100.0

11 Crawford 17033 122207 1 222 7 100.0

11 Cumberland 17035 122207 1 222 7 99.3

11 De Kalb 17037 125104 1 251 4 61.6

11 De Witt 17039 125104 1 251 4 100.0

11 Douglas 17041 125104 1 251 4 100.0

11 Du Page 17043 122211 1 222 11 100.0

11 Edgar 17045 125104 1 251 4 75.3

11 Edwards 17047 122207 1 222 7 100.0

11 Effingham 17049 122207 1 222 7 100.0

11 Fayette 17051 122207 1 222 7 100.0

11 Ford 17053 125104 1 251 4 100.0

11 Franklin 17055 122207 1 222 7 100.0

11 Fulton 17057 125104 1 251 4 100.0

11 Gallatin 17059 122204 1 222 4 81.2

11 Greene 17061 125104 1 251 4 98.6

11 Grundy 17063 125104 1 251 4 100.0

11 Hamilton 17065 122207 1 222 7 100.0

11 Hancock 17067 125104 1 251 4 63.0

11 Hardin 17069 122204 1 222 4 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
31

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Illinois (cont.) 11 Henderson 17071 125103 1 251 3 51.0

 11 Henry 17073 125104 1 251 4 100.0

11 Iroquois 17075 125104 1 251 4 100.0

11 Jackson 17077 122204 1 222 4 50.4

11 Jasper 17079 122207 1 222 7 100.0

11 Jefferson 17081 122207 1 222 7 100.0

11 Jersey 17083 125104 1 251 4 84.1

11 Jo Daviess 17085 122212 1 222 12 95.7

11 Johnson 17087 122204 1 222 4 72.8

11 Kane 17089 122211 1 222 11 91.4

11 Kankakee 17091 125104 1 251 4 99.0

11 Kendall 17093 125104 1 251 4 93.3

11 Knox 17095 125104 1 251 4 100.0

11 Lake 17097 122211 1 222 11 100.0

11 La Salle 17099 125104 1 251 4 100.0

11 Lawrence 17101 122207 1 222 7 100.0

11 Lee 17103 125104 1 251 4 100.0

11 Livingston 17105 125104 1 251 4 100.0

11 Logan 17107 125104 1 251 4 100.0

11 McDonough 17109 125104 1 251 4 100.0

11 McHenry 17111 122211 1 222 11 100.0

11 McLean 17113 125104 1 251 4 100.0

11 Macon 17115 125104 1 251 4 100.0

11 Macoupin 17117 125104 1 251 4 85.7

11 Madison 17119 122207 1 222 7 77.7

11 Marion 17121 122207 1 222 7 100.0

11 Marshall 17123 125104 1 251 4 100.0

11 Mason 17125 125104 1 251 4 100.0

11 Massac 17127 122203 1 222 3 100.0

11 Menard 17129 125104 1 251 4 100.0

11 Mercer 17131 125104 1 251 4 73.6

11 Monroe 17133 122201 1 222 1 79.6

11 Montgomery 17135 122207 1 222 7 68.4

11 Morgan 17137 125104 1 251 4 100.0

11 Moultrie 17139 125104 1 251 4 100.0

11 Ogle 17141 125104 1 251 4 97.5

11 Peoria 17143 125104 1 251 4 100.0

11 Perry 17145 122207 1 222 7 98.6

11 Piatt 17147 125104 1 251 4 100.0

11 Pike 17149 125104 1 251 4 59.6

11 Pope 17151 122204 1 222 4 72.9

11 Pulaski 17153 122203 1 222 3 77.3

11 Putnam 17155 125104 1 251 4 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
32

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Illinois (cont.) 11 Randolph 17157 122201 1 222 1 68.2

 11 Richland 17159 122207 1 222 7 100.0

11 Rock Island 17161 125103 1 251 3 61.2

11 St. Clair 17163 122207 1 222 7 89.0

11 Saline 17165 122204 1 222 4 55.7

11 Sangamon 17167 125104 1 251 4 100.0

11 Schuyler 17169 125104 1 251 4 100.0

11 Scott 17171 125104 1 251 4 100.0

11 Shelby 17173 122207 1 222 7 58.8

11 Stark 17175 125104 1 251 4 100.0

11 Stephenson 17177 125104 1 251 4 90.5

11 Tazewell 17179 125104 1 251 4 100.0

11 Union 17181 122204 1 222 4 54.9

11 Vermilion 17183 125104 1 251 4 88.4

11 Wabash 17185 122207 1 222 7 100.0

11 Warren 17187 125104 1 251 4 100.0

11 Washington 17189 122207 1 222 7 100.0

11 Wayne 17191 122207 1 222 7 100.0

11 White 17193 122207 1 222 7 98.9

11 Whiteside 17195 125104 1 251 4 90.5

11 Will 17197 122211 1 222 11 51.2

11 Williamson 17199 122204 1 222 4 63.7

11 Winnebago 17201 125104 1 251 4 61.7

11 Woodford 17203 125104 1 251 4 100.0

Indiana 11 Adams 18001 122208 1 222 8 98.5

11 Allen 18003 122208 1 222 8 72.3

11 Bartholomew 18005 122206 1 222 6 100.0

11 Benton 18007 125104 1 251 4 100.0

11 Blackford 18009 122208 1 222 8 100.0

11 Boone 18011 122208 1 222 8 100.0

11 Brown 18013 122205 1 222 5 79.1

11 Carroll 18015 122208 1 222 8 86.4

11 Cass 18017 122210 1 222 10 83.3

11 Clark 18019 122206 1 222 6 88.2

11 Clay 18021 122207 1 222 7 95.7

11 Clinton 18023 122208 1 222 8 100.0

11 Crawford 18025 122204 1 222 4 99.6

11 Daviess 18027 122207 1 222 7 63.2

11 Dearborn 18029 122206 1 222 6 91.3

11 Decatur 18031 122206 1 222 6 100.0

11 De Kalb 18033 122210 1 222 10 51.3

11 Delaware 18035 122208 1 222 8 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
33

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Indiana (cont.) 11 Dubois 18037 122204 1 222 4 100.0

 11 Elkhart 18039 122210 1 222 10 100.0

11 Fayette 18041 122206 1 222 6 85.5

11 Floyd 18043 122205 1 222 5 82.1

11 Fountain 18045 122208 1 222 8 98.9

11 Franklin 18047 122206 1 222 6 75.4

11 Fulton 18049 122210 1 222 10 100.0

11 Gibson 18051 122207 1 222 7 65.7

11 Grant 18053 122208 1 222 8 100.0

11 Greene 18055 122207 1 222 7 52.5

11 Hamilton 18057 122208 1 222 8 100.0

11 Hancock 18059 122208 1 222 8 100.0

11 Harrison 18061 122205 1 222 5 79.4

11 Hendricks 18063 122208 1 222 8 100.0

11 Henry 18065 122208 1 222 8 100.0

11 Howard 18067 122208 1 222 8 100.0

11 Huntington 18069 122208 1 222 8 95.1

11 Jackson 18071 122206 1 222 6 61.4

11 Jasper 18073 125104 1 251 4 100.0

11 Jay 18075 122208 1 222 8 100.0

11 Jefferson 18077 122206 1 222 6 100.0

11 Jennings 18079 122206 1 222 6 100.0

11 Johnson 18081 122208 1 222 8 72.6

11 Knox 18083 122207 1 222 7 100.0

11 Kosciusko 18085 122210 1 222 10 100.0

11 Lagrange 18087 122210 1 222 10 100.0

11 Lake 18089 122211 1 222 11 85.8

11 La Porte 18091 125104 1 251 4 53.5

11 Lawrence 18093 122205 1 222 5 90.0

11 Madison 18095 122208 1 222 8 100.0

11 Marion 18097 122208 1 222 8 100.0

11 Marshall 18099 122210 1 222 10 95.4

11 Martin 18101 122204 1 222 4 100.0

11 Miami 18103 122210 1 222 10 53.6

11 Monroe 18105 122205 1 222 5 98.9

11 Montgomery 18107 122208 1 222 8 100.0

11 Morgan 18109 122208 1 222 8 51.4

11 Newton 18111 125104 1 251 4 100.0

11 Noble 18113 122210 1 222 10 100.0

11 Ohio 18115 122206 1 222 6 100.0

11 Orange 18117 122204 1 222 4 82.9

11 Owen 18119 122204 1 222 4 69.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
34

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Indiana (cont.) 11 Parke 18121 122208 1 222 8 91.9

 11 Perry 18123 122204 1 222 4 100.0

11 Pike 18125 122204 1 222 4 73.7

11 Porter 18127 122211 1 222 11 74.9

11 Posey 18129 122204 1 222 4 63.0

11 Pulaski 18131 125104 1 251 4 96.5

11 Putnam 18133 122208 1 222 8 91.5

11 Randolph 18135 122208 1 222 8 100.0

11 Ripley 18137 122206 1 222 6 100.0

11 Rush 18139 122206 1 222 6 56.4

11 St. Joseph 18141 122210 1 222 10 78.5

11 Scott 18143 122206 1 222 6 100.0

11 Shelby 18145 122208 1 222 8 50.5

11 Spencer 18147 122204 1 222 4 100.0

11 Starke 18149 125104 1 251 4 98.5

11 Steuben 18151 122210 1 222 10 100.0

11 Sullivan 18153 122207 1 222 7 100.0

11 Switzerland 18155 122206 1 222 6 100.0

11 Tippecanoe 18157 122208 1 222 8 77.9

11 Tipton 18159 122208 1 222 8 100.0

11 Union 18161 122208 1 222 8 71.2

11 Vanderburgh 18163 122204 1 222 4 100.0

11 Vermillion 18165 122208 1 222 8 88.5

11 Vigo 18167 122207 1 222 7 100.0

11 Wabash 18169 122208 1 222 8 58.2

11 Warren 18171 125104 1 251 4 83.9

11 Warrick 18173 122204 1 222 4 100.0

11 Washington 18175 122205 1 222 5 80.5

11 Wayne 18177 122208 1 222 8 98.1

11 Wells 18179 122208 1 222 8 100.0

11 White 18181 125104 1 251 4 97.6

11 Whitley 18183 122210 1 222 10 93.5

Iowa 11 Adair 19001 125103 1 251 3 100.0

11 Adams 19003 125103 1 251 3 100.0

11 Allamakee 19005 122212 1 222 12 100.0

11 Appanoose 19007 125103 1 251 3 100.0

11 Audubon 19009 125103 1 251 3 100.0

11 Benton 19011 122213 1 222 13 94.1

11 Black Hawk 19013 122213 1 222 13 100.0

11 Boone 19015 125102 1 251 2 100.0

11 Bremer 19017 122213 1 222 13 100.0

11 Buchanan 19019 122213 1 222 13 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
35

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Iowa (cont.) 11 Buena Vista 19021 125102 1 251 2 99.9

 11 Butler 19023 122213 1 222 13 95.2

11 Calhoun 19025 125102 1 251 2 95.6

11 Carroll 19027 125103 1 251 3 96.6

11 Cass 19029 125103 1 251 3 100.0

11 Cedar 19031 125103 1 251 3 88.7

11 Cerro Gordo 19033 125102 1 251 2 79.4

11 Cherokee 19035 125102 1 251 2 85.2

11 Chickasaw 19037 122213 1 222 13 100.0

11 Clarke 19039 125103 1 251 3 100.0

11 Clay 19041 125102 1 251 2 100.0

11 Clayton 19043 122212 1 222 12 84.2

11 Clinton 19045 125103 1 251 3 99.7

11 Crawford 19047 125103 1 251 3 100.0

11 Dallas 19049 125102 1 251 2 58.6

11 Davis 19051 125103 1 251 3 100.0

11 Decatur 19053 125103 1 251 3 100.0

11 Delaware 19055 122213 1 222 13 100.0

11 Des Moines 19057 125103 1 251 3 100.0

11 Dickinson 19059 125102 1 251 2 100.0

11 Dubuque 19061 122213 1 222 13 65.0

11 Emmet 19063 125102 1 251 2 100.0

11 Fayette 19065 122213 1 222 13 62.9

11 Floyd 19067 122213 1 222 13 100.0

11 Franklin 19069 125102 1 251 2 99.2

11 Fremont 19071 125103 1 251 3 100.0

11 Greene 19073 125102 1 251 2 91.6

11 Grundy 19075 122213 1 222 13 77.7

11 Guthrie 19077 125103 1 251 3 89.8

11 Hamilton 19079 125102 1 251 2 100.0

11 Hancock 19081 125102 1 251 2 100.0

11 Hardin 19083 125102 1 251 2 96.4

11 Harrison 19085 125103 1 251 3 100.0

11 Henry 19087 125103 1 251 3 100.0

11 Howard 19089 122213 1 222 13 100.0

11 Humboldt 19091 125102 1 251 2 100.0

11 Ida 19093 125103 1 251 3 100.0

11 Iowa 19095 125103 1 251 3 99.9

11 Jackson 19097 122212 1 222 12 37.0

11 Jasper 19099 125103 1 251 3 85.3

11 Jefferson 19101 125103 1 251 3 100.0

11 Johnson 19103 125103 1 251 3 99.2

11 Jones 19105 122213 1 222 13 98.4

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
36

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Iowa (cont.) 11 Keokuk 19107 125103 1 251 3 100.0

 11 Kossuth 19109 125102 1 251 2 100.0

11 Lee 19111 125103 1 251 3 100.0

11 Linn 19113 122213 1 222 13 92.0

11 Louisa 19115 125103 1 251 3 100.0

11 Lucas 19117 125103 1 251 3 100.0

11 Lyon 19119 125102 1 251 2 100.0

11 Madison 19121 125103 1 251 3 100.0

11 Mahaska 19123 125103 1 251 3 100.0

11 Marion 19125 125103 1 251 3 100.0

11 Marshall 19127 125103 1 251 3 68.0

11 Mills 19129 125103 1 251 3 100.0

11 Mitchell 19131 122213 1 222 13 100.0

11 Monona 19133 125103 1 251 3 100.0

11 Monroe 19135 125103 1 251 3 100.0

11 Montgomery 19137 125103 1 251 3 100.0

11 Muscatine 19139 125103 1 251 3 100.0

11 O’Brien 19141 125102 1 251 2 100.0

11 Osceola 19143 125102 1 251 2 100.0

11 Page 19145 125103 1 251 3 100.0

11 Palo Alto 19147 125102 1 251 2 100.0

11 Plymouth 19149 125103 1 251 3 52.1

11 Pocahontas 19151 125102 1 251 2 100.0

11 Polk 19153 125102 1 251 2 66.8

11 Pottawattamie 19155 125103 1 251 3 100.0

11 Poweshiek 19157 125103 1 251 3 100.0

11 Ringgold 19159 125103 1 251 3 100.0

11 Sac 19161 125103 1 251 3 52.0

11 Scott 19163 125103 1 251 3 100.0

11 Shelby 19165 125103 1 251 3 100.0

11 Sioux 19167 125102 1 251 2 100.0

11 Story 19169 125102 1 251 2 100.0

11 Tama 19171 122213 1 222 13 75.9

11 Taylor 19173 125103 1 251 3 100.0

11 Union 19175 125103 1 251 3 100.0

11 Van Buren 19177 125103 1 251 3 100.0

11 Wapello 19179 125103 1 251 3 100.0

11 Warren 19181 125103 1 251 3 100.0

11 Washington 19183 125103 1 251 3 100.0

11 Wayne 19185 125103 1 251 3 100.0

11 Webster 19187 125102 1 251 2 100.0

11 Winnebago 19189 125102 1 251 2 100.0

11 Winneshiek 19191 122212 1 222 12 85.6

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
37

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Iowa (cont.) 11 Woodbury 19193 125103 1 251 3 100.0

 11 Worth 19195 125102 1 251 2 57.4

11 Wright 19197 125102 1 251 2 100.0

Kansas 32 Allen 20001 125105 1 251 5 100.0

32 Anderson 20003 125105 1 251 5 100.0

32 Atchison 20005 125103 1 251 3 100.0

32 Barber 20007 133205 1 332 5 100.0

32 Barton 20009 133205 1 332 5 100.0

32 Bourbon 20011 125105 1 251 5 100.0

32 Brown 20013 125103 1 251 3 100.0

32 Butler 20015 125106 1 251 6 72.4

32 Chase 20017 125106 1 251 6 100.0

32 Chautauqua 20019 125106 1 251 6 100.0

32 Cherokee 20021 125105 1 251 5 99.9

32 Cheyenne 20023 133103 1 331 3 100.0

32 Clark 20025 133205 1 332 5 83.3

32 Clay 20027 133205 1 332 5 53.5

32 Cloud 20029 133205 1 332 5 100.0

32 Coffey 20031 125105 1 251 5 89.5

32 Comanche 20033 133205 1 332 5 100.0

32 Cowley 20035 125106 1 251 6 78.1

32 Crawford 20037 125105 1 251 5 100.0

32 Decatur 20039 133103 1 331 3 56.5

32 Dickinson 20041 133205 1 332 5 72.2

32 Doniphan 20043 125103 1 251 3 100.0

32 Douglas 20045 125103 1 251 3 94.1

32 Edwards 20047 133205 1 332 5 100.0

32 Elk 20049 125106 1 251 6 100.0

32 Ellis 20051 133205 1 332 5 100.0

32 Ellsworth 20053 133205 1 332 5 100.0

32 Finney 20055 133103 1 331 3 45.2

32 Ford 20057 133205 1 332 5 100.0

32 Franklin 20059 125105 1 251 5 100.0

32 Geary 20061 125106 1 251 6 100.0

32 Gove 20063 133103 1 331 3 93.1

32 Graham 20065 133205 1 332 5 100.0

32 Grant 20067 133102 1 331 2 100.0

32 Gray 20069 133102 1 331 2 80.3

32 Greeley 20071 133103 1 331 3 100.0

32 Greenwood 20073 125106 1 251 6 100.0

32 Hamilton 20075 133102 1 331 2 89.3

32 Harper 20077 133205 1 332 5 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
38

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Kansas (cont.) 32 Harvey 20079 133205 1 332 5 100.0

 32 Haskell 20081 133102 1 331 2 100.0

32 Hodgeman 20083 133205 1 332 5 100.0

32 Jackson 20085 125106 1 251 6 51.6

32 Jefferson 20087 125103 1 251 3 100.0

32 Jewell 20089 133205 1 332 5 100.0

32 Johnson 20091 125103 1 251 3 90.0

32 Kearny 20093 133102 1 331 2 67.3

32 Kingman 20095 133205 1 332 5 100.0

32 Kiowa 20097 133205 1 332 5 100.0

32 Labette 20099 125105 1 251 5 100.0

32 Lane 20101 133103 1 331 3 92.0

32 Leavenworth 20103 125103 1 251 3 100.0

32 Lincoln 20105 133205 1 332 5 100.0

32 Linn 20107 125105 1 251 5 100.0

32 Logan 20109 133103 1 331 3 100.0

32 Lyon 20111 125106 1 251 6 95.8

32 McPherson 20113 133205 1 332 5 100.0

32 Marion 20115 133205 1 332 5 69.8

32 Marshall 20117 125107 1 251 7 57.9

32 Meade 20119 133102 1 331 2 73.9

32 Miami 20121 125105 1 251 5 97.6

32 Mitchell 20123 133205 1 332 5 100.0

32 Montgomery 20125 125105 1 251 5 50.7

32 Morris 20127 125106 1 251 6 100.0

32 Morton 20129 133102 1 331 2 100.0

32 Nemaha 20131 125103 1 251 3 87.1

32 Neosho 20133 125105 1 251 5 100.0

32 Ness 20135 133205 1 332 5 98.6

32 Norton 20137 133205 1 332 5 100.0

32 Osage 20139 125105 1 251 5 62.6

32 Osborne 20141 133205 1 332 5 100.0

32 Ottawa 20143 133205 1 332 5 100.0

32 Pawnee 20145 133205 1 332 5 100.0

32 Phillips 20147 133205 1 332 5 100.0

32 Pottawatomie 20149 125106 1 251 6 100.0

32 Pratt 20151 133205 1 332 5 100.0

32 Rawlins 20153 133103 1 331 3 100.0

32 Reno 20155 133205 1 332 5 100.0

32 Republic 20157 133205 1 332 5 97.2

32 Rice 20159 133205 1 332 5 100.0

32 Riley 20161 125106 1 251 6 85.6

32 Rooks 20163 133205 1 332 5 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
39

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Kansas (cont.) 32 Rush 20165 133205 1 332 5 100.0

 32 Russell 20167 133205 1 332 5 100.0

32 Saline 20169 133205 1 332 5 100.0

32 Scott 20171 133103 1 331 3 100.0

32 Sedgwick 20173 133205 1 332 5 100.0

32 Seward 20175 133102 1 331 2 100.0

32 Shawnee 20177 125103 1 251 3 67.7

32 Sheridan 20179 133103 1 331 3 83.6

32 Sherman 20181 133103 1 331 3 100.0

32 Smith 20183 133205 1 332 5 100.0

32 Stafford 20185 133205 1 332 5 100.0

32 Stanton 20187 133102 1 331 2 100.0

32 Stevens 20189 133102 1 331 2 100.0

32 Sumner 20191 133205 1 332 5 100.0

32 Thomas 20193 133103 1 331 3 100.0

32 Trego 20195 133205 1 332 5 100.0

32 Wabaunsee 20197 125106 1 251 6 100.0

32 Wallace 20199 133103 1 331 3 100.0

32 Washington 20201 125107 1 251 7 86.6

32 Wichita 20203 133103 1 331 3 100.0

32 Wilson 20205 125106 1 251 6 81.6

32 Woodson 20207 125106 1 251 6 74.5

32 Wyandotte 20209 125103 1 251 3 100.0

Kentucky 41 Adair 21001 122205 1 222 5 100.0

41 Allen 21003 122205 1 222 5 100.0

41 Anderson 21005 122206 1 222 6 100.0

41 Ballard 21007 122203 1 222 3 82.3

41 Barren 21009 122205 1 222 5 100.0

41 Bath 21011 122206 1 222 6 62.6

41 Bell 21013 122109 1 221 9 59.4

41 Boone 21015 122206 1 222 6 100.0

41 Bourbon 21017 122206 1 222 6 100.0

41 Boyd 21019 122105 1 221 5 100.0

41 Boyle 21021 122206 1 222 6 100.0

41 Bracken 21023 122206 1 222 6 100.0

41 Breathitt 21025 122108 1 221 8 100.0

41 Breckinridge 21027 122204 1 222 4 100.0

41 Bullitt 21029 122206 1 222 6 83.6

41 Butler 21031 122204 1 222 4 100.0

41 Caldwell 21033 122204 1 222 4 52.2

41 Calloway 21035 122203 1 222 3 100.0

41 Campbell 21037 122206 1 222 6 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
40

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Kentucky (cont.) 41 Carlisle 21039 122203 1 222 3 74.8

 41 Carroll 21041 122206 1 222 6 100.0

41 Carter 21043 122105 1 221 5 88.8

41 Casey 21045 122205 1 222 5 87.8

41 Christian 21047 122204 1 222 4 53.6

41 Clark 21049 122206 1 222 6 100.0

41 Clay 21051 122108 1 221 8 100.0

41 Clinton 21053 122205 1 222 5 100.0

41 Crittenden 21055 122204 1 222 4 74.1

41 Cumberland 21057 122205 1 222 5 100.0

41 Daviess 21059 122204 1 222 4 100.0

41 Edmonson 21061 122204 1 222 4 88.4

41 Elliott 21063 122108 1 221 8 88.4

41 Estill 21065 122108 1 221 8 89.1

41 Fayette 21067 122206 1 222 6 100.0

41 Fleming 21069 122206 1 222 6 88.1

41 Floyd 21071 122105 1 221 5 87.6

41 Franklin 21073 122206 1 222 6 100.0

41 Fulton 21075 123401 1 234 1 64.7

41 Gallatin 21077 122206 1 222 6 100.0

41 Garrard 21079 122206 1 222 6 100.0

41 Grant 21081 122206 1 222 6 100.0

41 Graves 21083 122203 1 222 3 100.0

41 Grayson 21085 122204 1 222 4 100.0

41 Green 21087 122205 1 222 5 100.0

41 Greenup 21089 122105 1 221 5 100.0

41 Hancock 21091 122204 1 222 4 100.0

41 Hardin 21093 122205 1 222 5 63.9

41 Harlan 21095 122109 1 221 9 76.5

41 Harrison 21097 122206 1 222 6 100.0

41 Hart 21099 122205 1 222 5 67.3

41 Henderson 21101 122204 1 222 4 100.0

41 Henry 21103 122206 1 222 6 100.0

41 Hickman 21105 122203 1 222 3 74.0

41 Hopkins 21107 122204 1 222 4 100.0

41 Jackson 21109 122108 1 221 8 100.0

41 Jefferson 21111 122206 1 222 6 91.0

41 Jessamine 21113 122206 1 222 6 100.0

41 Johnson 21115 122105 1 221 5 62.2

41 Kenton 21117 122206 1 222 6 100.0

41 Knott 21119 122108 1 221 8 83.3

41 Knox 21121 122108 1 221 8 100.0

41 Larue 21123 122205 1 222 5 88.9

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
41

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Kentucky (cont.) 41 Laurel 21125 122108 1 221 8 100.0

 41 Lawrence 21127 122105 1 221 5 95.2

41 Lee 21129 122108 1 221 8 100.0

41 Leslie 21131 122108 1 221 8 100.0

41 Letcher 21133 122108 1 221 8 51.8

41 Lewis 21135 122105 1 221 5 58.7

41 Lincoln 21137 122205 1 222 5 51.8

41 Livingston 21139 122205 1 222 5 55.5

41 Logan 21141 122205 1 222 5 52.8

41 Lyon 21143 122205 1 222 5 100.0

41 McCracken 21145 122203 1 222 3 100.0

41 McCreary 21147 122108 1 221 8 100.0

41 McLean 21149 122204 1 222 4 100.0

41 Madison 21151 122206 1 222 6 89.5

41 Magoffin 21153 122108 1 221 8 100.0

41 Marion 21155 122206 1 222 6 86.4

41 Marshall 21157 122203 1 222 3 89.5

41 Martin 21159 122105 1 221 5 100.0

41 Mason 21161 122206 1 222 6 100.0

41 Meade 21163 122204 1 222 4 72.4

41 Menifee 21165 122108 1 221 8 100.0

41 Mercer 21167 122206 1 222 6 100.0

41 Metcalfe 21169 122205 1 222 5 100.0

41 Monroe 21171 122205 1 222 5 100.0

41 Montgomery 21173 122206 1 222 6 85.2

41 Morgan 21175 122108 1 221 8 100.0

41 Muhlenberg 21177 122204 1 222 4 100.0

41 Nelson 21179 122206 1 222 6 97.1

41 Nicholas 21181 122206 1 222 6 100.0

41 Ohio 21183 122204 1 222 4 100.0

41 Oldham 21185 122206 1 222 6 100.0

41 Owen 21187 122206 1 222 6 100.0

41 Owsley 21189 122108 1 221 8 100.0

41 Pendleton 21191 122206 1 222 6 100.0

41 Perry 21193 122108 1 221 8 100.0

41 Pike 21195 222103 2 221 3 65.8

41 Powell 21197 122108 1 221 8 85.8

41 Pulaski 21199 122205 1 222 5 72.7

41 Robertson 21201 122206 1 222 6 100.0

41 Rockcastle 21203 122108 1 221 8 53.5

41 Rowan 21205 122108 1 221 8 92.9

41 Russell 21207 122205 1 222 5 100.0

41 Scott 21209 122206 1 222 6 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
42

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Kentucky (cont.) 41 Shelby 21211 122206 1 222 6 100.0

 41 Simpson 21213 122205 1 222 5 100.0

41 Spencer 21215 122206 1 222 6 100.0

41 Taylor 21217 122205 1 222 5 100.0

41 Todd 21219 122204 1 222 4 68.4

41 Trigg 21221 122205 1 222 5 97.6

41 Trimble 21223 122206 1 222 6 100.0

41 Union 21225 122204 1 222 4 100.0

41 Warren 21227 122205 1 222 5 63.2

41 Washington 21229 122206 1 222 6 100.0

41 Wayne 21231 122205 1 222 5 55.0

41 Webster 21233 122204 1 222 4 100.0

41 Whitley 21235 122108 1 221 8 97.4

41 Wolfe 21237 122108 1 221 8 100.0

41 Woodford 21239 122206 1 222 6 100.0

Louisiana 41 Acadia 22001 123205 1 232 5 100.0

41 Allen 22003 123206 1 232 6 92.5

41 Ascension 22005 123401 1 234 1 89.6

41 Assumption 22007 123401 1 234 1 74.9

41 Avoyelles 22009 123401 1 234 1 99.8

41 Beauregard 22011 123206 1 232 6 100.0

41 Bienville 22013 123105 1 231 5 74.6

41 Bossier 22015 123401 1 234 1 72.2

41 Caddo 22017 123105 1 231 5 85.5

41 Calcasieu 22019 123205 1 232 5 55.0

41 Caldwell 22021 123206 1 232 6 98.4

41 Cameron 22023 123205 1 232 5 96.7

41 Catahoula 22025 123401 1 234 1 51.8

41 Claiborne 22027 123105 1 231 5 100.0

41 Concordia 22029 123401 1 234 1 100.0

41 De Soto 22031 123105 1 231 5 99.3

41 East Baton Rouge 22033 123401 1 234 1 64.2

41 East Carroll 22035 123401 1 234 1 100.0

41 East Feliciana 22037 123102 1 231 2 90.7

41 Evangeline 22039 123205 1 232 5 57.8

41 Franklin 22041 123401 1 234 1 97.8

41 Grant 22043 123401 1 234 1 55.2

41 Iberia 22045 123401 1 234 1 56.4

41 Iberville 22047 123401 1 234 1 100.0

41 Jackson 22049 123105 1 231 5 53.7

41 Jefferson 22051 123205 1 232 5 100.0

41 Jefferson Davis 22053 123205 1 232 5 86.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
43

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Louisiana (cont.) 41 Lafayette 22055 123205 1 232 5 75.8

 41 Lafourche 22057 123205 1 232 5 95.6

41 La Salle 22059 123206 1 232 6 98.2

41 Lincoln 22061 123105 1 231 5 100.0

41 Livingston 22063 123202 1 232 2 77.3

41 Madison 22065 123401 1 234 1 100.0

41 Morehouse 22067 123401 1 234 1 80.2

41 Natchitoches 22069 123206 1 232 6 78.8

41 Orleans 22071 123205 1 232 5 100.0

41 Ouachita 22073 123105 1 231 5 67.0

41 Plaquemines 22075 123205 1 232 5 100.0

41 Pointe Coupee 22077 123401 1 234 1 100.0

41 Rapides 22079 123206 1 232 6 59.6

41 Red River 22081 123401 1 234 1 77.5

41 Richland 22083 123401 1 234 1 96.1

41 Sabine 22085 123206 1 232 6 88.9

41 St. Bernard 22087 123205 1 232 5 100.0

41 St. Charles 22089 123205 1 232 5 95.8

41 St. Helena 22091 123102 1 231 2 56.7

41 St. James 22093 123401 1 234 1 100.0

41 St. John the Baptist 22095 123401 1 234 1 66.9

41 St. Landry 22097 123401 1 234 1 68.7

41 St. Martin 22099 123401 1 234 1 86.2

41 St. Mary 22101 123205 1 232 5 90.4

41 St. Tammany 22103 123202 1 232 2 60.5

41 Tangipahoa 22105 123202 1 232 2 73.5

41 Tensas 22107 123401 1 234 1 100.0

41 Terrebonne 22109 123205 1 232 5 100.0

41 Union 22111 123105 1 231 5 100.0

41 Vermilion 22113 123205 1 232 5 100.0

41 Vernon 22115 123206 1 232 6 100.0

41 Washington 22117 123202 1 232 2 100.0

41 Webster 22119 123105 1 231 5 98.5

41 West Baton Rouge 22121 123401 1 234 1 100.0

41 West Carroll 22123 123401 1 234 1 100.0

41 West Feliciana 22125 123401 1 234 1 92.6

41 Winn 22127 123206 1 232 6 88.7

Maine 12 Androscoggin 23001 121204 1 212 4 63.7

12 Aroostook 23003 121201 1 212 1 48.4

12 Cumberland 23005 122101 1 221 1 81.5

12 Franklin 23007 221201 2 212 1 88.6

12 Hancock 23009 121203 1 212 3 43.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
44

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Maine (cont.) 12 Kennebec 23011 121204 1 212 4 82.5

 12 Knox 23013 121204 1 212 4 100.0

12 Lincoln 23015 121204 1 212 4 100.0

12 Oxford 23017 221201 2 212 1 83.4

12 Penobscot 23019 121202 1 212 2 59.7

12 Piscataquis 23021 221201 2 212 1 75.7

12 Sagadahoc 23023 121204 1 212 4 100.0

12 Somerset 23025 221201 2 212 1 78.6

12 Waldo 23027 121204 1 212 4 100.0

12 Washington 23029 121203 1 212 3 61.4

12 York 23031 122101 1 221 1 100.0

Maryland 12 Allegany 24001 222101 2 221 1 75.2

12 Anne Arundel 24003 123201 1 232 1 100.0

12 Baltimore 24005 122104 1 221 4 79.6

12 Baltimore City 24510 123201 1 232 1 68.6

12 Calvert 24009 123201 1 232 1 100.0

12 Caroline 24011 123201 1 232 1 100.0

12 Carroll 24013 122104 1 221 4 100.0

12 Cecil 24015 123201 1 232 1 50.6

12 Charles 24017 123201 1 232 1 80.0

12 Dorchester 24019 123201 1 232 1 100.0

12 Frederick 24021 122104 1 221 4 57.0

12 Garrett 24023 222102 2 221 2 100.0

12 Harford 24025 122104 1 221 4 61.8

12 Howard 24027 122104 1 221 4 90.3

12 Kent 24029 123201 1 232 1 100.0

12 Montgomery 24031 123101 1 231 1 65.9

12 Prince Georges 24033 123201 1 232 1 72.0

12 Queen Annes 24035 123201 1 232 1 100.0

12 St. Marys 24037 123201 1 232 1 100.0

12 Somerset 24039 123201 1 232 1 100.0

12 Talbot 24041 123201 1 232 1 100.0

12 Washington 24043 222101 2 221 1 62.4

12 Wicomico 24045 123201 1 232 1 100.0

12 Worcester 24047 123201 1 232 1 100.0

Massachusetts 12 Barnstable 25001 122101 1 221 1 100.0

12 Berkshire 25003 221203 2 212 3 97.7

12 Bristol 25005 122101 1 221 1 100.0

12 Dukes 25007 122101 1 221 1 100.0

12 Essex 25009 122101 1 221 1 100.0

12 Franklin 25011 221203 2 212 3 44.9

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
45

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Massachusetts (cont.) 12 Hampden 25013 122101 1 221 1 61.3

 12 Hampshire 25015 122101 1 221 1 50.8

12 Middlesex 25017 122101 1 221 1 94.4

12 Nantucket 25019 122101 1 221 1 100.0

12 Norfolk 25021 122101 1 221 1 100.0

12 Plymouth 25023 122101 1 221 1 100.0

12 Suffolk 25025 122101 1 221 1 100.0

12 Worcester 25027 122101 1 221 1 73.0

Michigan 11 Alcona 26001 121208 1 212 8 100.0

11 Alger 26003 121208 1 212 8 100.0

11 Allegan 26005 122210 1 222 10 100.0

11 Alpena 26007 121208 1 212 8 100.0

11 Antrim 26009 121208 1 212 8 100.0

11 Arenac 26011 121208 1 212 8 99.4

11 Baraga 26013 121210 1 212 10 100.0

11 Barry 26015 122210 1 222 10 100.0

11 Bay 26017 122210 1 222 10 93.7

11 Benzie 26019 121208 1 212 8 100.0

11 Berrien 26021 122210 1 222 10 100.0

11 Branch 26023 122210 1 222 10 100.0

11 Calhoun 26025 122210 1 222 10 100.0

11 Cass 26027 122210 1 222 10 100.0

11 Charlevoix 26029 121208 1 212 8 100.0

11 Cheboygan 26031 121208 1 212 8 100.0

11 Chippewa 26033 121208 1 212 8 100.0

11 Clare 26035 121208 1 212 8 92.7

11 Clinton 26037 122210 1 222 10 100.0

11 Crawford 26039 121208 1 212 8 100.0

11 Delta 26041 121208 1 212 8 100.0

11 Dickinson 26043 121208 1 212 8 52.0

11 Eaton 26045 122210 1 222 10 100.0

11 Emmet 26047 121208 1 212 8 100.0

11 Genesee 26049 122210 1 222 10 100.0

11 Gladwin 26051 121208 1 212 8 63.5

11 Gogebic 26053 121210 1 212 10 100.0

11 Grand Traverse 26055 121208 1 212 8 100.0

11 Gratiot 26057 122210 1 222 10 100.0

11 Hillsdale 26059 122210 1 222 10 100.0

11 Houghton 26061 121210 1 212 10 100.0

11 Huron 26063 122210 1 222 10 100.0

11 Ingham 26065 122210 1 222 10 100.0

11 Ionia 26067 122210 1 222 10 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
46

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Michigan (cont.) 11 Iosco 26069 121208 1 212 8 100.0

 11 Iron 26071 121210 1 212 10 100.0

11 Isabella 26073 121208 1 212 8 60.0

11 Jackson 26075 122210 1 222 10 100.0

11 Kalamazoo 26077 122210 1 222 10 100.0

11 Kalkaska 26079 121208 1 212 8 100.0

11 Kent 26081 122210 1 222 10 100.0

11 Keweenaw 26083 121210 1 212 10 63.1

11 Lake 26085 121208 1 212 8 100.0

11 Lapeer 26087 122210 1 222 10 96.0

11 Leelanau 26089 121208 1 212 8 100.0

11 Lenawee 26091 122209 1 222 9 63.5

11 Livingston 26093 122210 1 222 10 99.3

11 Luce 26095 121208 1 212 8 100.0

11 Mackinac 26097 121208 1 212 8 100.0

11 Macomb 26099 122209 1 222 9 100.0

11 Manistee 26101 121208 1 212 8 100.0

11 Marquette 26103 121210 1 212 10 58.4

11 Mason 26105 121208 1 212 8 100.0

11 Mecosta 26107 121208 1 212 8 100.0

11 Menominee 26109 121208 1 212 8 100.0

11 Midland 26111 122210 1 222 10 100.0

11 Missaukee 26113 121208 1 212 8 100.0

11 Monroe 26115 122209 1 222 9 100.0

11 Montcalm 26117 122210 1 222 10 58.1

11 Montmorency 26119 121208 1 212 8 100.0

11 Muskegon 26121 121208 1 212 8 50.1

11 Newaygo 26123 121208 1 212 8 98.8

11 Oakland 26125 122209 1 222 9 73.1

11 Oceana 26127 121208 1 212 8 100.0

11 Ogemaw 26129 121208 1 212 8 100.0

11 Ontonagon 26131 121210 1 212 10 100.0

11 Osceola 26133 121208 1 212 8 100.0

11 Oscoda 26135 121208 1 212 8 100.0

11 Otsego 26137 121208 1 212 8 100.0

11 Ottawa 26139 122210 1 222 10 100.0

11 Presque Isle 26141 121208 1 212 8 100.0

11 Roscommon 26143 121208 1 212 8 100.0

11 Saginaw 26145 122210 1 222 10 100.0

11 St. Clair 26147 122210 1 222 10 59.8

11 St. Joseph 26149 122210 1 222 10 100.0

11 Sanilac 26151 122210 1 222 10 100.0

11 Schoolcraft 26153 121208 1 212 8 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
47

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Michigan (cont.) 11 Shiawassee 26155 122210 1 222 10 100.0

 11 Tuscola 26157 122210 1 222 10 100.0

11 Van Buren 26159 122210 1 222 10 100.0

11 Washtenaw 26161 122209 1 222 9 52.8

11 Wayne 26163 122209 1 222 9 100.0

11 Wexford 26165 121208 1 212 8 100.0

Minnesota 11 Aitkin 27001 121214 1 212 14 61.2

11 Anoka 27003 122213 1 222 13 100.0

11 Becker 27005 122213 1 222 13 51.6

11 Beltrami 27007 121213 1 212 13 59.9

11 Benton 27009 122213 1 222 13 53.6

11 Big Stone 27011 125102 1 251 2 99.0

11 Blue Earth 27013 125102 1 251 2 92.7

11 Brown 27015 125102 1 251 2 100.0

11 Carlton 27017 121211 1 212 11 69.4

11 Carver 27019 122213 1 222 13 100.0

11 Cass 27021 121214 1 212 14 94.3

11 Chippewa 27023 125102 1 251 2 100.0

11 Chisago 27025 121211 1 212 11 65.1

11 Clay 27027 125101 1 251 1 100.0

11 Clearwater 27029 122213 1 222 13 62.0

11 Cook 27031 121212 1 212 12 100.0

11 Cottonwood 27033 125102 1 251 2 100.0

11 Crow Wing 27035 121214 1 212 14 90.0

11 Dakota 27037 122213 1 222 13 100.0

11 Dodge 27039 122213 1 222 13 86.1

11 Douglas 27041 122213 1 222 13 89.0

11 Faribault 27043 125102 1 251 2 100.0

11 Fillmore 27045 122212 1 222 12 64.3

11 Freeborn 27047 125102 1 251 2 62.1

11 Goodhue 27049 122213 1 222 13 70.1

11 Grant 27051 125101 1 251 1 100.0

11 Hennepin 27053 122213 1 222 13 100.0

11 Houston 27055 122212 1 222 12 100.0

11 Hubbard 27057 121214 1 212 14 99.7

11 Isanti 27059 121211 1 212 11 60.2

11 Itasca 27061 121214 1 212 14 92.3

11 Jackson 27063 125102 1 251 2 100.0

11 Kanabec 27065 121211 1 212 11 100.0

11 Kandiyohi 27067 125102 1 251 2 61.7

11 Kittson 27069 125101 1 251 1 80.4

11 Koochiching 27071 121213 1 212 13 94.5

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
48

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Minnesota (cont.) 11 Lac qui Parle 27073 125102 1 251 2 100.0

 11 Lake 27075 121212 1 212 12 100.0

11 Lake of the Woods 27077 121213 1 212 13 100.0

11 Le Sueur 27079 122213 1 222 13 92.9

11 Lincoln 27081 125102 1 251 2 100.0

11 Lyon 27083 125102 1 251 2 100.0

11 McLeod 27085 125102 1 251 2 68.8

11 Mahnomen 27087 125101 1 251 1 80.6

11 Marshall 27089 122214 1 222 14 49.2

11 Martin 27091 125102 1 251 2 100.0

11 Meeker 27093 122213 1 222 13 69.5

11 Mille Lacs 27095 121211 1 212 11 100.0

11 Morrison 27097 122213 1 222 13 70.8

11 Mower 27099 122213 1 222 13 100.0

11 Murray 27101 125102 1 251 2 100.0

11 Nicollet 27103 125102 1 251 2 99.8

11 Nobles 27105 125102 1 251 2 100.0

11 Norman 27107 125101 1 251 1 100.0

11 Olmsted 27109 122212 1 222 12 81.7

11 Otter Tail 27111 122213 1 222 13 68.4

11 Pennington 27113 122214 1 222 14 78.8

11 Pine 27115 121211 1 212 11 100.0

11 Pipestone 27117 125102 1 251 2 100.0

11 Polk 27119 125101 1 251 1 78.8

11 Pope 27121 125102 1 251 2 43.8

11 Ramsey 27123 122213 1 222 13 100.0

11 Red Lake 27125 122214 1 222 14 59.8

11 Redwood 27127 125102 1 251 2 100.0

11 Renville 27129 125102 1 251 2 100.0

11 Rice 27131 122213 1 222 13 100.0

11 Rock 27133 125102 1 251 2 100.0

11 Roseau 27135 122214 1 222 14 69.4

11 St. Louis 27137 121212 1 212 12 46.3

11 Scott 27139 122213 1 222 13 100.0

11 Sherburne 27141 122213 1 222 13 85.3

11 Sibley 27143 125102 1 251 2 81.0

11 Stearns 27145 122213 1 222 13 100.0

11 Steele 27147 122213 1 222 13 97.1

11 Stevens 27149 125101 1 251 1 73.9

11 Swift 27151 125102 1 251 2 100.0

11 Todd 27153 122213 1 222 13 100.0

11 Traverse 27155 125101 1 251 1 81.4

11 Wabasha 27157 122212 1 222 12 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
49

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Minnesota (cont.) 11 Wadena 27159 122213 1 222 13 76.5

 11 Waseca 27161 125102 1 251 2 53.0

11 Washington 27163 122213 1 222 13 100.0

11 Watonwan 27165 125102 1 251 2 100.0

11 Wilkin 27167 125101 1 251 1 100.0

11 Winona 27169 122212 1 222 12 100.0

11 Wright 27171 122213 1 222 13 100.0

11 Yellow Medicine 27173 125102 1 251 2 100.0

Mississippi 41 Adams 28001 123401 1 234 1 71.3

41 Alcorn 28003 123102 1 231 2 100.0

41 Amite 28005 123102 1 231 2 100.0

41 Attala 28007 123102 1 231 2 100.0

41 Benton 28009 123102 1 231 2 100.0

41 Bolivar 28011 123401 1 234 1 100.0

41 Calhoun 28013 123102 1 231 2 100.0

41 Carroll 28015 123102 1 231 2 71.8

41 Chickasaw 28017 123102 1 231 2 100.0

41 Choctaw 28019 123102 1 231 2 100.0

41 Claiborne 28021 123102 1 231 2 81.2

41 Clarke 28023 123102 1 231 2 100.0

41 Clay 28025 123102 1 231 2 100.0

41 Coahoma 28027 123401 1 234 1 100.0

41 Copiah 28029 123102 1 231 2 100.0

41 Covington 28031 123102 1 231 2 50.8

41 De Soto 28033 123401 1 234 1 51.9

41 Forrest 28035 123202 1 232 2 100.0

41 Franklin 28037 123102 1 231 2 100.0

41 George 28039 123202 1 232 2 100.0

41 Greene 28041 123202 1 232 2 100.0

41 Grenada 28043 123102 1 231 2 77.0

41 Hancock 28045 123205 1 232 5 52.1

41 Harrison 28047 123202 1 232 2 63.7

41 Hinds 28049 123102 1 231 2 100.0

41 Holmes 28051 123102 1 231 2 65.6

41 Humphreys 28053 123401 1 234 1 100.0

41 Issaquena 28055 123401 1 234 1 100.0

41 Itawamba 28057 123102 1 231 2 100.0

41 Jackson 28059 123202 1 232 2 100.0

41 Jasper 28061 123102 1 231 2 100.0

41 Jefferson 28063 123102 1 231 2 75.2

41 Jefferson Davis 28065 123202 1 232 2 55.8

41 Jones 28067 123202 1 232 2 69.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
50

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Mississippi (cont.) 41 Kemper 28069 123102 1 231 2 100.0

 41 Lafayette 28071 123102 1 231 2 100.0

41 Lamar 28073 123202 1 232 2 100.0

41 Lauderdale 28075 123102 1 231 2 100.0

41 Lawrence 28077 123102 1 231 2 64.7

41 Leake 28079 123102 1 231 2 100.0

41 Lee 28081 123102 1 231 2 100.0

41 Leflore 28083 123401 1 234 1 100.0

41 Lincoln 28085 123102 1 231 2 97.1

41 Lowndes 28087 123102 1 231 2 100.0

41 Madison 28089 123102 1 231 2 100.0

41 Marion 28091 123202 1 232 2 100.0

41 Marshall 28093 123102 1 231 2 100.0

41 Monroe 28095 123102 1 231 2 100.0

41 Montgomery 28097 123102 1 231 2 100.0

41 Neshoba 28099 123102 1 231 2 100.0

41 Newton 28101 123102 1 231 2 100.0

41 Noxubee 28103 123102 1 231 2 100.0

41 Oktibbeha 28105 123102 1 231 2 100.0

41 Panola 28107 123102 1 231 2 55.1

41 Pearl River 28109 123202 1 232 2 100.0

41 Perry 28111 123202 1 232 2 100.0

41 Pike 28113 123202 1 232 2 52.1

41 Pontotoc 28115 123102 1 231 2 100.0

41 Prentiss 28117 123102 1 231 2 100.0

41 Quitman 28119 123401 1 234 1 100.0

41 Rankin 28121 123102 1 231 2 100.0

41 Scott 28123 123102 1 231 2 100.0

41 Sharkey 28125 123401 1 234 1 100.0

41 Simpson 28127 123102 1 231 2 100.0

41 Smith 28129 123102 1 231 2 100.0

41 Stone 28131 123202 1 232 2 100.0

41 Sunflower 28133 123401 1 234 1 100.0

41 Tallahatchie 28135 123401 1 234 1 98.4

41 Tate 28137 123102 1 231 2 61.2

41 Tippah 28139 123102 1 231 2 100.0

41 Tishomingo 28141 123102 1 231 2 100.0

41 Tunica 28143 123401 1 234 1 100.0

41 Union 28145 123102 1 231 2 100.0

41 Walthall 28147 123202 1 232 2 100.0

41 Warren 28149 123401 1 234 1 66.0

41 Washington 28151 123401 1 234 1 100.0

41 Wayne 28153 123202 1 232 2 70.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
51

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Mississippi (cont.) 41 Webster 28155 123102 1 231 2 100.0

 41 Wilkinson 28157 123401 1 234 1 50.2

41 Winston 28159 123102 1 231 2 100.0

41 Yalobusha 28161 123102 1 231 2 100.0

41 Yazoo 28163 123102 1 231 2 57.9

Missouri 11 Adair 29001 125103 1 251 3 100.0

11 Andrew 29003 125103 1 251 3 100.0

11 Atchison 29005 125103 1 251 3 100.0

11 Audrain 29007 125103 1 251 3 100.0

11 Barry 29009 122201 1 222 1 100.0

11 Barton 29011 125105 1 251 5 84.3

11 Bates 29013 125105 1 251 5 100.0

11 Benton 29015 122201 1 222 1 90.2

11 Bollinger 29017 122201 1 222 1 99.2

11 Boone 29019 125103 1 251 3 80.0

11 Buchanan 29021 125103 1 251 3 100.0

11 Butler 29023 123401 1 234 1 67.3

11 Caldwell 29025 125103 1 251 3 100.0

11 Callaway 29027 125103 1 251 3 90.5

11 Camden 29029 122201 1 222 1 100.0

11 Cape Girardeau 29031 122201 1 222 1 95.6

11 Carroll 29033 125103 1 251 3 100.0

11 Carter 29035 122201 1 222 1 100.0

11 Cass 29037 125105 1 251 5 86.0

11 Cedar 29039 125105 1 251 5 69.4

11 Chariton 29041 125103 1 251 3 100.0

11 Christian 29043 122201 1 222 1 100.0

11 Clark 29045 125103 1 251 3 100.0

11 Clay 29047 125103 1 251 3 100.0

11 Clinton 29049 125103 1 251 3 100.0

11 Cole 29051 122201 1 222 1 100.0

11 Cooper 29053 122201 1 222 1 94.4

11 Crawford 29055 122201 1 222 1 100.0

11 Dade 29057 122201 1 222 1 89.6

11 Dallas 29059 122201 1 222 1 100.0

11 Daviess 29061 125103 1 251 3 100.0

11 De Kalb 29063 125103 1 251 3 100.0

11 Dent 29065 122201 1 222 1 100.0

11 Douglas 29067 122201 1 222 1 100.0

11 Dunklin 29069 123401 1 234 1 100.0

11 Franklin 29071 122201 1 222 1 97.6

11 Gasconade 29073 122201 1 222 1 83.9

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
52

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Missouri (cont.) 11 Gentry 29075 125103 1 251 3 100.0

 11 Greene 29077 122201 1 222 1 100.0

11 Grundy 29079 125103 1 251 3 100.0

11 Harrison 29081 125103 1 251 3 100.0

11 Henry 29083 125105 1 251 5 88.0

11 Hickory 29085 122201 1 222 1 100.0

11 Holt 29087 125103 1 251 3 100.0

11 Howard 29089 125103 1 251 3 95.2

11 Howell 29091 122201 1 222 1 100.0

11 Iron 29093 122201 1 222 1 100.0

11 Jackson 29095 125103 1 251 3 99.2

11 Jasper 29097 122201 1 222 1 75.0

11 Jefferson 29099 122201 1 222 1 100.0

11 Johnson 29101 125105 1 251 5 93.1

11 Knox 29103 125103 1 251 3 100.0

11 Laclede 29105 122201 1 222 1 100.0

11 Lafayette 29107 125103 1 251 3 100.0

11 Lawrence 29109 122201 1 222 1 100.0

11 Lewis 29111 125103 1 251 3 100.0

11 Lincoln 29113 125103 1 251 3 100.0

11 Linn 29115 125103 1 251 3 100.0

11 Livingston 29117 125103 1 251 3 100.0

11 McDonald 29119 122201 1 222 1 100.0

11 Macon 29121 125103 1 251 3 100.0

11 Madison 29123 122201 1 222 1 100.0

11 Maries 29125 122201 1 222 1 100.0

11 Marion 29127 125103 1 251 3 100.0

11 Mercer 29129 125103 1 251 3 100.0

11 Miller 29131 122201 1 222 1 100.0

11 Mississippi 29133 123401 1 234 1 100.0

11 Moniteau 29135 122201 1 222 1 100.0

11 Monroe 29137 125103 1 251 3 100.0

11 Montgomery 29139 125103 1 251 3 100.0

11 Morgan 29141 122201 1 222 1 100.0

11 New Madrid 29143 123401 1 234 1 100.0

11 Newton 29145 122201 1 222 1 99.6

11 Nodaway 29147 125103 1 251 3 100.0

11 Oregon 29149 122201 1 222 1 100.0

11 Osage 29151 122201 1 222 1 82.8

11 Ozark 29153 122201 1 222 1 100.0

11 Pemiscot 29155 123401 1 234 1 100.0

11 Perry 29157 122201 1 222 1 100.0

11 Pettis 29159 125105 1 251 5 59.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
53

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Missouri (cont.) 11 Phelps 29161 122201 1 222 1 100.0

 11 Pike 29163 125103 1 251 3 100.0

11 Platte 29165 125103 1 251 3 100.0

11 Polk 29167 122201 1 222 1 100.0

11 Pulaski 29169 122201 1 222 1 100.0

11 Putnam 29171 125103 1 251 3 100.0

11 Ralls 29173 125103 1 251 3 100.0

11 Randolph 29175 125103 1 251 3 100.0

11 Ray 29177 125103 1 251 3 100.0

11 Reynolds 29179 122201 1 222 1 100.0

11 Ripley 29181 122201 1 222 1 95.0

11 St. Charles 29183 125103 1 251 3 88.5

11 St. Clair 29185 122201 1 222 1 50.5

11 St. Francois 29187 122201 1 222 1 100.0

11 St. Louis 29189 122201 1 222 1 88.5

11 St. Louis City 29510 122201 1 222 1 100.0

11 Ste. Genevieve 29186 122201 1 222 1 100.0

11 Saline 29195 125103 1 251 3 99.9

11 Schuyler 29197 125103 1 251 3 100.0

11 Scotland 29199 125103 1 251 3 100.0

11 Scott 29201 123401 1 234 1 98.0

11 Shannon 29203 122201 1 222 1 100.0

11 Shelby 29205 125103 1 251 3 100.0

11 Stoddard 29207 123401 1 234 1 97.5

11 Stone 29209 122201 1 222 1 100.0

11 Sullivan 29211 125103 1 251 3 100.0

11 Taney 29213 122201 1 222 1 100.0

11 Texas 29215 122201 1 222 1 100.0

11 Vernon 29217 125105 1 251 5 100.0

11 Warren 29219 125103 1 251 3 92.7

11 Washington 29221 122201 1 222 1 100.0

11 Wayne 29223 122201 1 222 1 100.0

11 Webster 29225 122201 1 222 1 100.0

11 Worth 29227 125103 1 251 3 100.0

11 Wright 29229 122201 1 222 1 100.0

Montana 32 Beaverhead 30001 233205 2 332 5 99.0

32 Big Horn 30003 133107 1 331 7 76.9

32 Blaine 30005 133104 1 331 4 100.0

32 Broadwater 30007 233204 2 332 4 68.0

32 Carbon 30009 233107 2 331 7 32.5

32 Carter 30011 133106 1 331 6 52.2

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
54

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Montana (cont.) 32 Cascade 30013 133104 1 331 4 75.2

 32 Chouteau 30015 133104 1 331 4 100.0

32 Custer 30017 133107 1 331 7 100.0

32 Daniels 30019 133104 1 331 4 67.6

32 Dawson 30021 133106 1 331 6 67.6

32 Deer Lodge 30023 233205 2 332 5 86.2

32 Fallon 30025 133106 1 331 6 71.9

32 Fergus 30027 133104 1 331 4 64.3

32 Flathead 30029 233303 2 333 3 50.7

32 Gallatin 30031 233204 2 332 4 37.9

32 Garfield 30033 133107 1 331 7 57.9

32 Glacier 30035 133104 1 331 4 51.4

32 Golden Valley 30037 133107 1 331 7 77.5

32 Granite 30039 233202 2 332 2 99.8

32 Hill 30041 133104 1 331 4 100.0

32 Jefferson 30043 233205 2 332 5 83.6

32 Judith Basin 30045 233204 2 332 4 64.4

32 Lake 30047 233302 2 333 2 59.7

32 Lewis and Clark 30049 233202 2 332 2 39.2

32 Liberty 30051 133104 1 331 4 100.0

32 Lincoln 30053 233302 2 333 2 96.4

32 McCone 30055 133104 1 331 4 51.6

32 Madison 30057 233205 2 332 5 94.8

32 Meagher 30059 233204 2 332 4 100.0

32 Mineral 30061 233304 2 333 4 100.0

32 Missoula 30063 233304 2 333 4 46.5

32 Musselshell 30065 133107 1 331 7 90.8

32 Park 30067 233101 2 331 1 67.2

32 Petroleum 30069 133104 1 331 4 36.6

32 Phillips 30071 133104 1 331 4 100.0

32 Pondera 30073 133104 1 331 4 80.5

32 Powder River 30075 133107 1 331 7 100.0

32 Powell 30077 233202 2 332 2 79.9

32 Prairie 30079 133107 1 331 7 93.9

32 Ravalli 30081 233202 2 332 2 60.2

32 Richland 30083 133105 1 331 5 51.3

32 Roosevelt 30085 133105 1 331 5 63.6

32 Rosebud 30087 133107 1 331 7 100.0

32 Sanders 30089 233304 2 333 4 78.7

32 Sheridan 30091 133105 1 331 5 100.0

32 Silver Bow 30093 233205 2 332 5 100.0

32 Stillwater 30095 133107 1 331 7 72.7

32 Sweet Grass 30097 133107 1 331 7 43.4

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
55

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Montana (cont.) 32 Teton 30099 133104 1 331 4 66.4

 32 Toole 30101 133104 1 331 4 100.0

32 Treasure 30103 133107 1 331 7 100.0

32 Valley 30105 133104 1 331 4 100.0

32 Wheatland 30107 233204 2 332 4 62.2

32 Wibaux 30109 133106 1 331 6 100.0

32 Yellowstone 30111 133107 1 331 7 95.3

32 Yellowstone National Park (Part) 30113 233101 2 331 1 100.0

Nebraska 31 Adams 31001 133205 1 332 5 77.4

31 Antelope 31003 125102 1 251 2 67.4

31 Arthur 31005 133203 1 332 3 99.7

31 Banner 31007 133108 1 331 8 100.0

31 Blaine 31009 133203 1 332 3 100.0

31 Boone 31011 125102 1 251 2 54.0

31 Box Butte 31013 133106 1 331 6 97.0

31 Boyd 31015 133204 1 332 4 99.4

31 Brown 31017 133203 1 332 3 78.5

31 Buffalo 31019 133205 1 332 5 100.0

31 Burt 31021 125103 1 251 3 89.6

31 Butler 31023 125107 1 251 7 98.2

31 Cass 31025 125103 1 251 3 100.0

31 Cedar 31027 125102 1 251 2 100.0

31 Chase 31029 133103 1 331 3 100.0

31 Cherry 31031 133203 1 332 3 90.6

31 Cheyenne 31033 133103 1 331 3 87.4

31 Clay 31035 125107 1 251 7 100.0

31 Colfax 31037 125102 1 251 2 95.9

31 Cuming 31039 125102 1 251 2 97.2

31 Custer 31041 133205 1 332 5 85.0

31 Dakota 31043 125103 1 251 3 98.8

31 Dawes 31045 133106 1 331 6 100.0

31 Dawson 31047 133205 1 332 5 100.0

31 Deuel 31049 133103 1 331 3 100.0

31 Dixon 31051 125102 1 251 2 89.7

31 Dodge 31053 125102 1 251 2 76.6

31 Douglas 31055 125103 1 251 3 100.0

31 Dundy 31057 133103 1 331 3 100.0

31 Fillmore 31059 125107 1 251 7 100.0

31 Franklin 31061 133205 1 332 5 100.0

31 Frontier 31063 133205 1 332 5 74.1

31 Furnas 31065 133205 1 332 5 100.0

31 Gage 31067 125107 1 251 7 91.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
56

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Nebraska (cont.) 31 Garden 31069 133108 1 331 8 34.2

 31 Garfield 31071 133203 1 332 3 79.7

31 Gosper 31073 133205 1 332 5 100.0

31 Grant 31075 133203 1 332 3 100.0

31 Greeley 31077 133205 1 332 5 96.3

31 Hall 31079 133205 1 332 5 99.3

31 Hamilton 31081 125107 1 251 7 91.0

31 Harlan 31083 133205 1 332 5 100.0

31 Hayes 31085 133103 1 331 3 96.4

31 Hitchcock 31087 133103 1 331 3 73.6

31 Holt 31089 133203 1 332 3 51.2

31 Hooker 31091 133203 1 332 3 100.0

31 Howard 31093 133205 1 332 5 100.0

31 Jefferson 31095 125107 1 251 7 100.0

31 Johnson 31097 125103 1 251 3 100.0

31 Kearney 31099 133205 1 332 5 100.0

31 Keith 31101 133103 1 331 3 76.0

31 Keya Paha 31103 133204 1 332 4 98.2

31 Kimball 31105 133108 1 331 8 100.0

31 Knox 31107 125102 1 251 2 59.4

31 Lancaster 31109 125103 1 251 3 51.3

31 Lincoln 31111 133103 1 331 3 51.0

31 Logan 31113 133203 1 332 3 93.1

31 Loup 31115 133203 1 332 3 81.7

31 McPherson 31117 133203 1 332 3 100.0

31 Madison 31119 125102 1 251 2 100.0

31 Merrick 31121 133205 1 332 5 53.1

31 Morrill 31123 133108 1 331 8 81.6

31 Nance 31125 133107 1 331 7 39.3

31 Nemaha 31127 125103 1 251 3 100.0

31 Nuckolls 31129 133205 1 332 5 60.6

31 Otoe 31131 125103 1 251 3 100.0

31 Pawnee 31133 125103 1 251 3 80.5

31 Perkins 31135 133103 1 331 3 100.0

31 Phelps 31137 133205 1 332 5 100.0

31 Pierce 31139 125102 1 251 2 100.0

31 Platte 31141 125102 1 251 2 85.8

31 Polk 31143 125107 1 251 7 99.9

31 Red Willow 31145 133205 1 332 5 99.3

31 Richardson 31147 125103 1 251 3 100.0

31 Rock 31149 133203 1 332 3 57.0

31 Saline 31151 125107 1 251 7 100.0

31 Sarpy 31153 125103 1 251 3 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
57

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Nebraska (cont.) 31 Saunders 31155 125103 1 251 3 73.7

 31 Scotts Bluff 31157 133108 1 331 8 90.1

31 Seward 31159 125107 1 251 7 100.0

31 Sheridan 31161 133106 1 331 6 67.5

31 Sherman 31163 133205 1 332 5 100.0

31 Sioux 31165 133106 1 331 6 92.7

31 Stanton 31167 125102 1 251 2 100.0

31 Thayer 31169 125107 1 251 7 76.7

31 Thomas 31171 133203 1 332 3 100.0

31 Thurston 31173 125103 1 251 3 72.3

31 Valley 31175 133205 1 332 5 100.0

31 Washington 31177 125103 1 251 3 100.0

31 Wayne 31179 125102 1 251 2 100.0

31 Webster 31181 133205 1 332 5 96.3

31 Wheeler 31183 133203 1 332 3 93.6

31 York 31185 125107 1 251 7 100.0

Nevada 22 Carson City 32510 134104 1 341 4 85.0

22 Churchill 32001 134105 1 341 5 83.8

22 Clark 32003 132201 1 322 1 91.4

22 Douglas 32005 134104 1 341 4 83.5

22 Elko 32007 134107 1 341 7 49.2

22 Esmeralda 32009 134105 1 341 5 66.3

22 Eureka 32011 234101 2 341 1 64.4

22 Humboldt 32013 134105 1 341 5 53.9

22 Lander 32015 234101 2 341 1 74.2

22 Lincoln 32017 134106 1 341 6 90.4

22 Lyon 32019 134104 1 341 4 87.6

22 Mineral 32021 134104 1 341 4 50.1

22 Nye 32023 234101 2 341 1 44.3

22 Pershing 32027 134105 1 341 5 86.5

22 Storey 32029 134104 1 341 4 91.1

22 Washoe 32031 134202 1 342 2 95.8

22 White Pine 32033 234101 2 341 1 71.8

New Hampshire 12 Belknap 33001 221201 2 212 1 57.2

12 Carroll 33003 221201 2 212 1 75.4

12 Cheshire 33005 221202 2 212 2 100.0

12 Coos 33007 221201 2 212 1 100.0

12 Grafton 33009 221201 2 212 1 57.5

12 Hillsborough 33011 221202 2 212 2 58.3

12 Merrimack 33013 221202 2 212 2 54.6

12 Rockingham 33015 122101 1 221 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
58

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

New Hampshire (cont.) 12 Strafford 33017 122101 1 221 1 100.0

 12 Sullivan 33019 221202 2 212 2 100.0

New Jersey 12 Atlantic 34001 122103 1 221 3 100.0

12 Bergen 34003 122104 1 221 4 74.2

12 Burlington 34005 122103 1 221 3 100.0

12 Camden 34007 122103 1 221 3 100.0

12 Cape May 34009 122103 1 221 3 100.0

12 Cumberland 34011 122103 1 221 3 100.0

12 Essex 34013 122104 1 221 4 100.0

12 Gloucester 34015 122103 1 221 3 100.0

12 Hudson 34017 122104 1 221 4 100.0

12 Hunterdon 34019 122104 1 221 4 99.6

12 Mercer 34021 122103 1 221 3 67.3

12 Middlesex 34023 122103 1 221 3 60.6

12 Monmouth 34025 122103 1 221 3 100.0

12 Morris 34027 122104 1 221 4 60.9

12 Ocean 34029 122103 1 221 3 100.0

12 Passaic 34031 122101 1 221 1 65.6

12 Salem 34033 122103 1 221 3 100.0

12 Somerset 34035 122104 1 221 4 100.0

12 Sussex 34037 122102 1 221 2 85.3

12 Union 34039 122104 1 221 4 100.0

12 Warren 34041 122101 1 221 1 60.0

New Mexico 32 Bernalillo 35001 131305 1 313 5 85.6

32 Catron 35003 231301 2 313 1 96.7

32 Chaves 35005 131501 1 315 1 55.5

32 Cibola 35006 231301 2 313 1 84.7

32 Colfax 35007 233106 2 331 6 48.0

32 Curry 35009 131502 1 315 2 98.9

32 De Baca 35011 131501 1 315 1 100.0

32 Dona Ana 35013 132101 1 321 1 100.0

32 Eddy 35015 132101 1 321 1 88.1

32 Grant 35017 132101 1 321 1 81.3

32 Guadalupe 35019 131501 1 315 1 90.2

32 Harding 35021 131501 1 315 1 92.0

32 Hidalgo 35023 132101 1 321 1 100.0

32 Lea 35025 131502 1 315 2 58.9

32 Lincoln 35027 231302 2 313 2 45.3

32 Los Alamos 35028 233107 2 331 7 86.6

32 Luna 35029 132101 1 321 1 100.0

32 McKinley 35031 231301 2 313 1 60.4

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
59

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

New Mexico (cont.) 32 Mora 35033 231302 2 313 2 49.4

 32 Otero 35035 132101 1 321 1 63.0

32 Quay 35037 131502 1 315 2 63.1

32 Rio Arriba 35039 233107 2 331 7 43.3

32 Roosevelt 35041 131502 1 315 2 72.9

32 Sandoval 35043 231301 2 313 1 43.4

32 San Juan 35045 131302 1 313 2 73.7

32 San Miguel 35047 231302 2 313 2 52.2

32 Santa Fe 35049 133110 1 331 10 50.1

32 Sierra 35051 132101 1 321 1 86.2

32 Socorro 35053 231301 2 313 1 39.9

32 Taos 35055 133110 1 331 10 79.9

32 Torrance 35057 231302 2 313 2 89.8

32 Union 35059 131501 1 315 1 52.4

32 Valencia 35061 131305 1 313 5 82.8

0

New York 12 Albany 36001 122102 1 221 2 78.7

12 Allegany 36003 121206 1 212 6 97.5

12 Bronx 36005 122104 1 221 4 100.0

12 Broome 36007 121206 1 212 6 100.0

12 Cattaraugus 36009 121206 1 212 6 79.3

12 Cayuga 36011 122209 1 222 9 72.8

12 Chautauqua 36013 122106 1 221 6 59.3

12 Chemung 36015 121206 1 212 6 100.0

12 Chenango 36017 121206 1 212 6 100.0

12 Clinton 36019 221204 2 212 4 70.6

12 Columbia 36021 122102 1 221 2 62.9

12 Cortland 36023 121206 1 212 6 100.0

12 Delaware 36025 221205 2 212 5 75.6

12 Dutchess 36027 122102 1 221 2 52.6

12 Erie 36029 122209 1 222 9 89.0

12 Essex 36031 221204 2 212 4 83.7

12 Franklin 36033 221204 2 212 4 76.4

12 Fulton 36035 121206 1 212 6 51.2

12 Genesee 36037 122209 1 222 9 94.6

12 Greene 36039 122102 1 221 2 52.7

12 Hamilton 36041 221204 2 212 4 100.0

12 Herkimer 36043 221204 2 212 4 57.7

12 Jefferson 36045 122209 1 222 9 92.4

12 Kings 36047 122101 1 221 1 100.0

12 Lewis 36049 221204 2 212 4 80.0

12 Livingston 36051 121206 1 212 6 69.7

12 Madison 36053 121206 1 212 6 97.2

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
60

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

New York (cont.) 12 Monroe 36055 122209 1 222 9 100.0

 12 Montgomery 36057 121206 1 212 6 100.0

12 Nassau 36059 122101 1 221 1 100.0

12 New York 36061 122104 1 221 4 100.0

12 Niagara 36063 122209 1 222 9 100.0

12 Oneida 36065 121206 1 212 6 72.8

12 Onondaga 36067 121206 1 212 6 73.1

12 Ontario 36069 122209 1 222 9 56.0

12 Orange 36071 122102 1 221 2 83.9

12 Orleans 36073 122209 1 222 9 100.0

12 Oswego 36075 122209 1 222 9 90.0

12 Otsego 36077 121206 1 212 6 100.0

12 Putnam 36079 122101 1 221 1 100.0

12 Queens 36081 122101 1 221 1 100.0

12 Rensselaer 36083 122102 1 221 2 55.7

12 Richmond 36085 122104 1 221 4 100.0

12 Rockland 36087 122101 1 221 1 89.8

12 St. Lawrence 36089 121205 1 212 5 58.2

12 Saratoga 36091 122102 1 221 2 60.3

12 Schenectady 36093 122102 1 221 2 53.5

12 Schoharie 36095 121206 1 212 6 68.8

12 Schuyler 36097 121206 1 212 6 100.0

12 Seneca 36099 122209 1 222 9 59.8

12 Steuben 36101 121206 1 212 6 100.0

12 Suffolk 36103 122101 1 221 1 100.0

12 Sullivan 36105 121206 1 212 6 56.2

12 Tioga 36107 121206 1 212 6 100.0

12 Tompkins 36109 121206 1 212 6 100.0

12 Ulster 36111 122102 1 221 2 53.4

12 Warren 36113 221204 2 212 4 96.0

12 Washington 36115 122102 1 221 2 63.9

12 Wayne 36117 122209 1 222 9 100.0

12 Westchester 36119 122101 1 221 1 80.4

12 Wyoming 36121 121206 1 212 6 85.2

12 Yates 36123 121206 1 212 6 100.0

North Carolina 42 Alamance 37001 123101 1 231 1 100.0

42 Alexander 37003 123101 1 231 1 96.5

42 Alleghany 37005 222104 2 221 4 100.0

42 Anson 37007 123101 1 231 1 100.0

42 Ashe 37009 222104 2 221 4 99.8

42 Avery 37011 222104 2 221 4 100.0

42 Beaufort 37013 123203 1 232 3 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
61

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

North Carolina (cont.) 42 Bertie 37015 123201 1 232 1 56.0

 42 Bladen 37017 123202 1 232 2 76.1

42 Brunswick 37019 123203 1 232 3 100.0

42 Buncombe 37021 222104 2 221 4 100.0

42 Burke 37023 222104 2 221 4 60.4

42 Cabarrus 37025 123101 1 231 1 100.0

42 Caldwell 37027 222104 2 221 4 82.4

42 Camden 37029 123201 1 232 1 100.0

42 Carteret 37031 123203 1 232 3 100.0

42 Caswell 37033 123101 1 231 1 100.0

42 Catawba 37035 123101 1 231 1 100.0

42 Chatham 37037 123101 1 231 1 100.0

42 Cherokee 37039 222104 2 221 4 100.0

42 Chowan 37041 123201 1 232 1 100.0

42 Clay 37043 222104 2 221 4 100.0

42 Cleveland 37045 123101 1 231 1 100.0

42 Columbus 37047 123203 1 232 3 71.4

42 Craven 37049 123203 1 232 3 100.0

42 Cumberland 37051 123202 1 232 2 81.6

42 Currituck 37053 123201 1 232 1 100.0

42 Dare 37055 123203 1 232 3 94.1

42 Davidson 37057 123101 1 231 1 100.0

42 Davie 37059 123101 1 231 1 100.0

42 Duplin 37061 123202 1 232 2 76.1

42 Durham 37063 123101 1 231 1 100.0

42 Edgecombe 37065 123202 1 232 2 95.3

42 Forsyth 37067 123101 1 231 1 100.0

42 Franklin 37069 123101 1 231 1 100.0

42 Gaston 37071 123101 1 231 1 100.0

42 Gates 37073 123201 1 232 1 100.0

42 Graham 37075 222104 2 221 4 100.0

42 Granville 37077 123101 1 231 1 100.0

42 Greene 37079 123202 1 232 2 100.0

42 Guilford 37081 123101 1 231 1 100.0

42 Halifax 37083 123201 1 232 1 53.2

42 Harnett 37085 123101 1 231 1 94.1

42 Haywood 37087 222104 2 221 4 100.0

42 Henderson 37089 222104 2 221 4 100.0

42 Hertford 37091 123201 1 232 1 100.0

42 Hoke 37093 123101 1 231 1 62.0

42 Hyde 37095 123203 1 232 3 100.0

42 Iredell 37097 123101 1 231 1 100.0

42 Jackson 37099 222104 2 221 4 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
62

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

North Carolina (cont.) 42 Johnston 37101 123202 1 232 2 52.2

 42 Jones 37103 123203 1 232 3 99.0

42 Lee 37105 123101 1 231 1 100.0

42 Lenoir 37107 123202 1 232 2 78.4

42 Lincoln 37109 123101 1 231 1 100.0

42 McDowell 37111 222104 2 221 4 100.0

42 Macon 37113 222104 2 221 4 100.0

42 Madison 37115 222104 2 221 4 99.7

42 Martin 37117 123203 1 232 3 99.8

42 Mecklenburg 37119 123101 1 231 1 100.0

42 Mitchell 37121 222104 2 221 4 100.0

42 Montgomery 37123 123101 1 231 1 100.0

42 Moore 37125 123101 1 231 1 100.0

42 Nash 37127 123101 1 231 1 56.4

42 New Hanover 37129 123203 1 232 3 100.0

42 Northampton 37131 123201 1 232 1 89.2

42 Onslow 37133 123203 1 232 3 100.0

42 Orange 37135 123101 1 231 1 100.0

42 Pamlico 37137 123203 1 232 3 100.0

42 Pasquotank 37139 123201 1 232 1 100.0

42 Pender 37141 123203 1 232 3 98.9

42 Perquimans 37143 123201 1 232 1 100.0

42 Person 37145 123101 1 231 1 100.0

42 Pitt 37147 123203 1 232 3 66.2

42 Polk 37149 222104 2 221 4 66.1

42 Randolph 37151 123101 1 231 1 100.0

42 Richmond 37153 123101 1 231 1 100.0

42 Robeson 37155 123202 1 232 2 100.0

42 Rockingham 37157 123101 1 231 1 100.0

42 Rowan 37159 123101 1 231 1 100.0

42 Rutherford 37161 123101 1 231 1 51.0

42 Sampson 37163 123202 1 232 2 98.1

42 Scotland 37165 123101 1 231 1 58.5

42 Stanly 37167 123101 1 231 1 100.0

42 Stokes 37169 123101 1 231 1 99.8

42 Surry 37171 222104 2 221 4 58.5

42 Swain 37173 222104 2 221 4 100.0

42 Transylvania 37175 222104 2 221 4 100.0

42 Tyrrell 37177 123203 1 232 3 100.0

42 Union 37179 123101 1 231 1 100.0

42 Vance 37181 123101 1 231 1 100.0

42 Wake 37183 123101 1 231 1 100.0

42 Warren 37185 123101 1 231 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
63

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

North Carolina (cont.) 42 Washington 37187 123203 1 232 3 100.0

 42 Watauga 37189 222104 2 221 4 100.0

42 Wayne 37191 123202 1 232 2 100.0

42 Wilkes 37193 222104 2 221 4 80.4

42 Wilson 37195 123202 1 232 2 99.9

42 Yadkin 37197 123101 1 231 1 100.0

42 Yancey 37199 222104 2 221 4 100.0

North Dakota 31 Adams 38001 133106 1 331 6 100.0

31 Barnes 38003 133201 1 332 1 100.0

31 Benson 38005 133201 1 332 1 100.0

31 Billings 38007 133106 1 331 6 100.0

31 Bottineau 38009 133201 1 332 1 100.0

31 Bowman 38011 133106 1 331 6 100.0

31 Burke 38013 133201 1 332 1 97.4

31 Burleigh 38015 133105 1 331 5 92.7

31 Cass 38017 125101 1 251 1 80.3

31 Cavalier 38019 133201 1 332 1 83.6

31 Dickey 38021 133201 1 332 1 81.4

31 Divide 38023 133105 1 331 5 75.7

31 Dunn 38025 133106 1 331 6 79.4

31 Eddy 38027 133201 1 332 1 100.0

31 Emmons 38029 133105 1 331 5 51.0

31 Foster 38031 133201 1 332 1 100.0

31 Golden Valley 38033 133106 1 331 6 100.0

31 Grand Forks 38035 125101 1 251 1 99.0

31 Grant 38037 133106 1 331 6 100.0

31 Griggs 38039 133201 1 332 1 100.0

31 Hettinger 38041 133106 1 331 6 100.0

31 Kidder 38043 133105 1 331 5 95.3

31 La Moure 38045 133201 1 332 1 82.5

31 Logan 38047 133105 1 331 5 100.0

31 McHenry 38049 133201 1 332 1 100.0

31 McIntosh 38051 133105 1 331 5 100.0

31 McKenzie 38053 133106 1 331 6 58.0

31 McLean 38055 133105 1 331 5 95.1

31 Mercer 38057 133105 1 331 5 77.8

31 Morton 38059 133106 1 331 6 95.2

31 Mountrail 38061 133105 1 331 5 89.4

31 Nelson 38063 133201 1 332 1 94.3

31 Oliver 38065 133105 1 331 5 87.0

31 Pembina 38067 125101 1 251 1 100.0

31 Pierce 38069 133201 1 332 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
64

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

North Dakota (cont.) 31 Ramsey 38071 133201 1 332 1 100.0

 31 Ransom 38073 133201 1 332 1 87.6

31 Renville 38075 133201 1 332 1 100.0

31 Richland 38077 125101 1 251 1 100.0

31 Rolette 38079 133201 1 332 1 100.0

31 Sargent 38081 133201 1 332 1 77.0

31 Sheridan 38083 133201 1 332 1 52.7

31 Sioux 38085 133106 1 331 6 100.0

31 Slope 38087 133106 1 331 6 100.0

31 Stark 38089 133106 1 331 6 100.0

31 Steele 38091 125101 1 251 1 54.0

31 Stutsman 38093 133201 1 332 1 73.5

31 Towner 38095 133201 1 332 1 100.0

31 Traill 38097 125101 1 251 1 100.0

31 Walsh 38099 125101 1 251 1 77.4

31 Ward 38101 133201 1 332 1 74.9

31 Wells 38103 133201 1 332 1 97.0

31 Williams 38105 133105 1 331 5 100.0

Ohio 11 Adams 39001 122206 1 222 6 76.5

11 Allen 39003 122208 1 222 8 63.9

11 Ashland 39005 122106 1 221 6 58.0

11 Ashtabula 39007 122106 1 221 6 60.7

11 Athens 39009 122105 1 221 5 100.0

11 Auglaize 39011 122208 1 222 8 100.0

11 Belmont 39013 122105 1 221 5 100.0

11 Brown 39015 122208 1 222 8 68.8

11 Butler 39017 122208 1 222 8 100.0

11 Carroll 39019 122105 1 221 5 92.7

11 Champaign 39021 122208 1 222 8 100.0

11 Clark 39023 122208 1 222 8 100.0

11 Clermont 39025 122208 1 222 8 65.9

11 Clinton 39027 122208 1 222 8 100.0

11 Columbiana 39029 122106 1 221 6 90.3

11 Coshocton 39031 122105 1 221 5 100.0

11 Crawford 39033 122208 1 222 8 100.0

11 Cuyahoga 39035 122209 1 222 9 70.8

11 Darke 39037 122208 1 222 8 100.0

11 Defiance 39039 122209 1 222 9 76.6

11 Delaware 39041 122208 1 222 8 91.6

11 Erie 39043 122209 1 222 9 100.0

11 Fairfield 39045 122106 1 221 6 93.8

11 Fayette 39047 122208 1 222 8 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
65

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Ohio (cont.) 11 Franklin 39049 122208 1 222 8 85.9

 11 Fulton 39051 122209 1 222 9 95.7

11 Gallia 39053 122105 1 221 5 100.0

11 Geauga 39055 122106 1 221 6 85.8

11 Greene 39057 122208 1 222 8 100.0

11 Guernsey 39059 122105 1 221 5 100.0

11 Hamilton 39061 122208 1 222 8 61.2

11 Hancock 39063 122209 1 222 9 55.2

11 Hardin 39065 122208 1 222 8 100.0

11 Harrison 39067 122105 1 221 5 100.0

11 Henry 39069 122209 1 222 9 100.0

11 Highland 39071 122208 1 222 8 87.8

11 Hocking 39073 122105 1 221 5 74.8

11 Holmes 39075 122105 1 221 5 85.4

11 Huron 39077 122208 1 222 8 73.2

11 Jackson 39079 122105 1 221 5 100.0

11 Jefferson 39081 122105 1 221 5 100.0

11 Knox 39083 122106 1 221 6 78.6

11 Lake 39085 122209 1 222 9 100.0

11 Lawrence 39087 122105 1 221 5 100.0

11 Licking 39089 122106 1 221 6 92.0

11 Logan 39091 122208 1 222 8 100.0

11 Lorain 39093 122209 1 222 9 60.0

11 Lucas 39095 122209 1 222 9 100.0

11 Madison 39097 122208 1 222 8 100.0

11 Mahoning 39099 122106 1 221 6 100.0

11 Marion 39101 122208 1 222 8 100.0

11 Medina 39103 122106 1 221 6 59.4

11 Meigs 39105 122105 1 221 5 100.0

11 Mercer 39107 122208 1 222 8 100.0

11 Miami 39109 122208 1 222 8 100.0

11 Monroe 39111 122105 1 221 5 100.0

11 Montgomery 39113 122208 1 222 8 100.0

11 Morgan 39115 122105 1 221 5 100.0

11 Morrow 39117 122208 1 222 8 76.5

11 Muskingum 39119 122105 1 221 5 100.0

11 Noble 39121 122105 1 221 5 100.0

11 Ottawa 39123 122209 1 222 9 100.0

11 Paulding 39125 122209 1 222 9 99.1

11 Perry 39127 122105 1 221 5 65.3

11 Pickaway 39129 122208 1 222 8 75.9

11 Pike 39131 122105 1 221 5 88.7

11 Portage 39133 122106 1 221 6 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
66

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Ohio (cont.) 11 Preble 39135 122208 1 222 8 100.0

 11 Putnam 39137 122209 1 222 9 100.0

11 Richland 39139 122208 1 222 8 55.3

11 Ross 39141 122106 1 221 6 39.8

11 Sandusky 39143 122209 1 222 9 100.0

11 Scioto 39145 122105 1 221 5 100.0

11 Seneca 39147 122209 1 222 9 54.8

11 Shelby 39149 122208 1 222 8 100.0

11 Stark 39151 122106 1 221 6 87.9

11 Summit 39153 122106 1 221 6 100.0

11 Trumbull 39155 122106 1 221 6 100.0

11 Tuscarawas 39157 122105 1 221 5 100.0

11 Union 39159 122208 1 222 8 100.0

11 Van Wert 39161 122209 1 222 9 68.2

11 Vinton 39163 122105 1 221 5 99.6

11 Warren 39165 122208 1 222 8 100.0

11 Washington 39167 122105 1 221 5 100.0

11 Wayne 39169 122106 1 221 6 99.9

11 Williams 39171 122210 1 222 10 41.5

11 Wood 39173 122209 1 222 9 100.0

11 Wyandot 39175 122208 1 222 8 100.0

Oklahoma 41 Adair 40001 122201 1 222 1 73.2

41 Alfalfa 40003 133205 1 332 5 100.0

41 Atoka 40005 125501 1 255 1 100.0

41 Beaver 40007 133102 1 331 2 100.0

41 Beckham 40009 131101 1 311 1 94.7

41 Blaine 40011 131101 1 311 1 77.0

41 Bryan 40013 125501 1 255 1 98.4

41 Caddo 40015 131101 1 311 1 100.0

41 Canadian 40017 131101 1 311 1 100.0

41 Carter 40019 125501 1 255 1 100.0

41 Cherokee 40021 122201 1 222 1 65.5

41 Choctaw 40023 125503 1 255 3 78.6

41 Cimarron 40025 133102 1 331 2 55.2

41 Cleveland 40027 125501 1 255 1 73.0

41 Coal 40029 125501 1 255 1 100.0

41 Comanche 40031 131101 1 311 1 100.0

41 Cotton 40033 131101 1 311 1 100.0

41 Craig 40035 125105 1 251 5 100.0

41 Creek 40037 125106 1 251 6 57.0

41 Custer 40039 131101 1 311 1 100.0

41 Delaware 40041 122201 1 222 1 92.9

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
67

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Oklahoma (cont.) 41 Dewey 40043 131101 1 311 1 76.7

 41 Ellis 40045 133102 1 331 2 60.2

41 Garfield 40047 133205 1 332 5 100.0

41 Garvin 40049 125501 1 255 1 89.9

41 Grady 40051 131101 1 311 1 100.0

41 Grant 40053 133205 1 332 5 100.0

41 Greer 40055 131101 1 311 1 100.0

41 Harmon 40057 131101 1 311 1 84.6

41 Harper 40059 133102 1 331 2 72.0

41 Haskell 40061 125501 1 255 1 72.1

41 Hughes 40063 125501 1 255 1 100.0

41 Jackson 40065 131101 1 311 1 85.9

41 Jefferson 40067 125501 1 255 1 93.3

41 Johnston 40069 125501 1 255 1 100.0

41 Kay 40071 133205 1 332 5 71.3

41 Kingfisher 40073 131101 1 311 1 66.3

41 Kiowa 40075 131101 1 311 1 100.0

41 Latimer 40077 123107 1 231 7 68.8

41 Le Flore 40079 123107 1 231 7 64.2

41 Lincoln 40081 125501 1 255 1 99.9

41 Logan 40083 131101 1 311 1 54.5

41 Love 40085 125501 1 255 1 100.0

41 McClain 40087 131101 1 311 1 61.0

41 McCurtain 40089 223101 2 231 1 63.2

41 McIntosh 40091 125501 1 255 1 100.0

41 Major 40093 133205 1 332 5 100.0

41 Marshall 40095 125501 1 255 1 100.0

41 Mayes 40097 125105 1 251 5 88.7

41 Murray 40099 125501 1 255 1 100.0

41 Muskogee 40101 125105 1 251 5 64.6

41 Noble 40103 133205 1 332 5 69.5

41 Nowata 40105 125105 1 251 5 100.0

41 Okfuskee 40107 125501 1 255 1 100.0

41 Oklahoma 40109 131101 1 311 1 58.8

41 Okmulgee 40111 125501 1 255 1 87.1

41 Osage 40113 125106 1 251 6 99.9

41 Ottawa 40115 125105 1 251 5 68.4

41 Pawnee 40117 125106 1 251 6 100.0

41 Payne 40119 125106 1 251 6 80.2

41 Pittsburg 40121 125501 1 255 1 97.5

41 Pontotoc 40123 125501 1 255 1 100.0

41 Pottawatomie 40125 125501 1 255 1 100.0

41 Pushmataha 40127 223101 2 231 1 76.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
68

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Oklahoma (cont.) 41 Roger Mills 40129 131101 1 311 1 57.8

 41 Rogers 40131 125105 1 251 5 100.0

41 Seminole 40133 125501 1 255 1 100.0

41 Sequoyah 40135 222201 2 222 1 91.3

41 Stephens 40137 131101 1 311 1 60.9

41 Texas 40139 133102 1 331 2 100.0

41 Tillman 40141 131101 1 311 1 99.9

41 Tulsa 40143 125105 1 251 5 63.3

41 Wagoner 40145 125105 1 251 5 100.0

41 Washington 40147 125106 1 251 6 65.5

41 Washita 40149 131101 1 311 1 100.0

41 Woods 40151 133205 1 332 5 100.0

41 Woodward 40153 133205 1 332 5 72.5

Oregon 21 Baker 41001 233207 2 332 7 63.2

21 Benton 41003 124201 1 242 1 52.9

21 Clackamas 41005 224202 2 242 2 51.6

21 Clatsop 41007 224201 2 242 1 100.0

21 Columbia 41009 124201 1 242 1 54.3

21 Coos 41011 224201 2 242 1 76.5

21 Crook 41013 134208 1 342 8 65.7

21 Curry 41015 226101 2 261 1 96.6

21 Deschutes 41017 224203 2 242 3 65.7

21 Douglas 41019 224201 2 242 1 32.4

21 Gilliam 41021 134209 1 342 9 53.0

21 Grant 41023 233207 2 332 7 96.9

21 Harney 41025 134202 1 342 2 87.0

21 Hood River 41027 224203 2 242 3 100.0

21 Jackson 41029 226101 2 261 1 54.9

21 Jefferson 41031 224203 2 242 3 47.9

21 Josephine 41033 226101 2 261 1 100.0

21 Klamath 41035 224203 2 242 3 68.5

21 Lake 41037 134202 1 342 2 60.4

21 Lane 41039 224202 2 242 2 52.1

21 Lincoln 41041 224201 2 242 1 100.0

21 Linn 41043 224202 2 242 2 57.8

21 Malheur 41045 134203 1 342 3 83.8

21 Marion 41047 124201 1 242 1 62.6

21 Morrow 41049 134208 1 342 8 52.0

21 Multnomah 41051 124201 1 242 1 58.9

21 Polk 41053 224201 2 242 1 58.6

21 Sherman 41055 134208 1 342 8 76.8

21 Tillamook 41057 224201 2 242 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
69

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Oregon (cont.) 21 Umatilla 41059 134209 1 342 9 48.8

 21 Union 41061 233207 2 332 7 89.6

21 Wallowa 41063 233207 2 332 7 100.0

21 Wasco 41065 224203 2 242 3 63.2

21 Washington 41067 124201 1 242 1 58.6

21 Wheeler 41069 233207 2 332 7 68.4

21 Yamhill 41071 224201 2 242 1 56.1

Pennsylvania 12 Adams 42001 222104 2 221 4 50.1

12 Allegheny 42003 122105 1 221 5 100.0

12 Armstrong 42005 122105 1 221 5 100.0

12 Beaver 42007 122105 1 221 5 55.4

12 Bedford 42009 222101 2 221 1 85.6

12 Berks 42011 222101 2 221 1 74.8

12 Blair 42013 222102 2 221 2 55.1

12 Bradford 42015 121206 1 212 6 100.0

12 Bucks 42017 122104 1 221 4 75.5

12 Butler 42019 122105 1 221 5 69.8

12 Cambria 42021 222102 2 221 2 91.0

12 Cameron 42023 121207 1 212 7 100.0

12 Carbon 42025 222101 2 221 1 100.0

12 Centre 42027 222101 2 221 1 61.5

12 Chester 42029 122104 1 221 4 100.0

12 Clarion 42031 122105 1 221 5 78.1

12 Clearfield 42033 122105 1 221 5 66.8

12 Clinton 42035 121207 1 212 7 60.8

12 Columbia 42037 222101 2 221 1 99.8

12 Crawford 42039 122106 1 221 6 97.7

12 Cumberland 42041 222101 2 221 1 87.3

12 Dauphin 42043 222101 2 221 1 99.6

12 Delaware 42045 122103 1 221 3 58.9

12 Elk 42047 121207 1 212 7 100.0

12 Erie 42049 122209 1 222 9 63.3

12 Fayette 42051 122105 1 221 5 69.3

12 Forest 42053 121207 1 212 7 100.0

12 Franklin 42055 222101 2 221 1 80.2

12 Fulton 42057 222101 2 221 1 100.0

12 Greene 42059 122105 1 221 5 100.0

12 Huntingdon 42061 222101 2 221 1 99.8

12 Indiana 42063 122105 1 221 5 91.6

12 Jefferson 42065 122105 1 221 5 84.1

12 Juniata 42067 222101 2 221 1 100.0

12 Lackawanna 42069 222101 2 221 1 70.6

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
70

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Pennsylvania (cont.) 12 Lancaster 42071 122104 1 221 4 86.4

 12 Lawrence 42073 122106 1 221 6 100.0

12 Lebanon 42075 222101 2 221 1 100.0

12 Lehigh 42077 222101 2 221 1 51.5

12 Luzerne 42079 222101 2 221 1 85.5

12 Lycoming 42081 222101 2 221 1 58.4

12 McKean 42083 121207 1 212 7 100.0

12 Mercer 42085 122106 1 221 6 100.0

12 Mifflin 42087 222101 2 221 1 100.0

12 Monroe 42089 222101 2 221 1 56.2

12 Montgomery 42091 122104 1 221 4 92.4

12 Montour 42093 222101 2 221 1 100.0

12 Northampton 42095 122102 1 221 2 46.4

12 Northumberland 42097 222101 2 221 1 100.0

12 Perry 42099 222101 2 221 1 100.0

12 Philadelphia 42101 122103 1 221 3 96.4

12 Pike 42103 121206 1 212 6 65.3

12 Potter 42105 121207 1 212 7 66.5

12 Schuylkill 42107 222101 2 221 1 100.0

12 Snyder 42109 222101 2 221 1 100.0

12 Somerset 42111 222102 2 221 2 99.1

12 Sullivan 42113 121206 1 212 6 90.2

12 Susquehanna 42115 121206 1 212 6 100.0

12 Tioga 42117 121206 1 212 6 91.5

12 Union 42119 222101 2 221 1 100.0

12 Venango 42121 121207 1 212 7 46.3

12 Warren 42123 121207 1 212 7 56.2

12 Washington 42125 122105 1 221 5 100.0

12 Wayne 42127 121206 1 212 6 91.9

12 Westmoreland 42129 122105 1 221 5 79.0

12 Wyoming 42131 121206 1 212 6 99.9

12 York 42133 122104 1 221 4 89.4

Rhode Island 12 Bristol 44001 122101 1 221 1 100.0

12 Kent 44003 122101 1 221 1 100.0

12 Newport 44005 122101 1 221 1 100.0

12 Providence 44007 122101 1 221 1 100.0

12 Washington 44009 122101 1 221 1 100.0

South Carolina 42 Abbeville 45001 123101 1 231 1 100.0

42 Aiken 45003 123101 1 231 1 80.1

42 Allendale 45005 123202 1 232 2 100.0

42 Anderson 45007 123101 1 231 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
71

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

South Carolina (cont.) 42 Bamberg 45009 123202 1 232 2 96.0

 42 Barnwell 45011 123202 1 232 2 100.0

42 Beaufort 45013 123203 1 232 3 100.0

42 Berkeley 45015 123203 1 232 3 99.9

42 Calhoun 45017 123202 1 232 2 100.0

42 Charleston 45019 123203 1 232 3 100.0

42 Cherokee 45021 123101 1 231 1 100.0

42 Chester 45023 123101 1 231 1 100.0

42 Chesterfield 45025 123101 1 231 1 99.5

42 Clarendon 45027 123202 1 232 2 99.0

42 Colleton 45029 123203 1 232 3 97.8

42 Darlington 45031 123202 1 232 2 82.2

42 Dillon 45033 123202 1 232 2 100.0

42 Dorchester 45035 123203 1 232 3 100.0

42 Edgefield 45037 123101 1 231 1 100.0

42 Fairfield 45039 123101 1 231 1 100.0

42 Florence 45041 123202 1 232 2 75.9

42 Georgetown 45043 123203 1 232 3 100.0

42 Greenville 45045 123101 1 231 1 69.3

42 Greenwood 45047 123101 1 231 1 100.0

42 Hampton 45049 123203 1 232 3 63.4

42 Horry 45051 123203 1 232 3 91.5

42 Jasper 45053 123203 1 232 3 100.0

42 Kershaw 45055 123101 1 231 1 97.8

42 Lancaster 45057 123101 1 231 1 100.0

42 Laurens 45059 123101 1 231 1 100.0

42 Lee 45061 123202 1 232 2 81.7

42 Lexington 45063 123101 1 231 1 70.8

42 McCormick 45065 123101 1 231 1 100.0

42 Marion 45067 123202 1 232 2 69.6

42 Marlboro 45069 123202 1 232 2 65.8

42 Newberry 45071 123101 1 231 1 100.0

42 Oconee 45073 222104 2 221 4 88.7

42 Orangeburg 45075 123202 1 232 2 81.3

42 Pickens 45077 222104 2 221 4 89.9

42 Richland 45079 123101 1 231 1 52.2

42 Saluda 45081 123101 1 231 1 100.0

42 Spartanburg 45083 123101 1 231 1 100.0

42 Sumter 45085 123202 1 232 2 100.0

42 Union 45087 123101 1 231 1 100.0

42 Williamsburg 45089 123203 1 232 3 98.7

42 York 45091 123101 1 231 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
72

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

South Dakota 31 Aurora 46003 133202 1 332 2 83.6

31 Beadle 46005 133202 1 332 2 92.4

31 Bennett 46007 133106 1 331 6 92.4

31 Bon Homme 46009 133202 1 332 2 89.7

31 Brookings 46011 125102 1 251 2 100.0

31 Brown 46013 133202 1 332 2 73.5

31 Brule 46015 133204 1 332 4 93.2

31 Buffalo 46017 133204 1 332 4 100.0

31 Butte 46019 133106 1 331 6 99.5

31 Campbell 46021 133105 1 331 5 77.2

31 Charles Mix 46023 133202 1 332 2 69.5

31 Clark 46025 125102 1 251 2 59.7

31 Clay 46027 125102 1 251 2 100.0

31 Codington 46029 125102 1 251 2 100.0

31 Corson 46031 133106 1 331 6 100.0

31 Custer 46033 233401 2 334 1 56.8

31 Davison 46035 133202 1 332 2 100.0

31 Day 46037 125102 1 251 2 67.2

31 Deuel 46039 125102 1 251 2 100.0

31 Dewey 46041 133106 1 331 6 98.7

31 Douglas 46043 133202 1 332 2 100.0

31 Edmunds 46045 133204 1 332 4 43.1

31 Fall River 46047 133106 1 331 6 87.5

31 Faulk 46049 133204 1 332 4 79.6

31 Grant 46051 125102 1 251 2 100.0

31 Gregory 46053 133204 1 332 4 99.8

31 Haakon 46055 133106 1 331 6 100.0

31 Hamlin 46057 125102 1 251 2 100.0

31 Hand 46059 133204 1 332 4 83.6

31 Hanson 46061 133202 1 332 2 100.0

31 Harding 46063 133106 1 331 6 100.0

31 Hughes 46065 133204 1 332 4 53.7

31 Hutchinson 46067 133202 1 332 2 88.9

31 Hyde 46069 133204 1 332 4 100.0

31 Jackson 46071 133106 1 331 6 100.0

31 Jerauld 46073 133204 1 332 4 88.4

31 Jones 46075 133106 1 331 6 69.6

31 Kingsbury 46077 125102 1 251 2 67.7

31 Lake 46079 125102 1 251 2 100.0

31 Lawrence 46081 233401 2 334 1 89.1

31 Lincoln 46083 125102 1 251 2 100.0

31 Lyman 46085 133204 1 332 4 99.7

31 McCook 46087 125102 1 251 2 51.9

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
73

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

South Dakota (cont.) 31 McPherson 46089 133105 1 331 5 73.4

 31 Marshall 46091 133202 1 332 2 48.8

31 Meade 46093 133106 1 331 6 86.0

31 Mellette 46095 133106 1 331 6 61.4

31 Miner 46097 133202 1 332 2 84.9

31 Minnehaha 46099 125102 1 251 2 100.0

31 Moody 46101 125102 1 251 2 100.0

31 Pennington 46103 133106 1 331 6 67.1

31 Perkins 46105 133106 1 331 6 100.0

31 Potter 46107 133105 1 331 5 85.4

31 Roberts 46109 125102 1 251 2 73.8

31 Sanborn 46111 133202 1 332 2 100.0

31 Shannon 46113 133106 1 331 6 100.0

31 Spink 46115 133202 1 332 2 100.0

31 Stanley 46117 133106 1 331 6 94.0

31 Sully 46119 133105 1 331 5 47.4

31 Todd 46121 133204 1 332 4 56.9

31 Tripp 46123 133204 1 332 4 100.0

31 Turner 46125 125102 1 251 2 100.0

31 Union 46127 125102 1 251 2 80.0

31 Walworth 46129 133105 1 331 5 89.4

31 Yankton 46135 125102 1 251 2 98.2

31 Ziebach 46137 133106 1 331 6 100.0

Tennessee 41 Anderson 47001 122109 1 221 9 86.3

41 Bedford 47003 122205 1 222 5 100.0

41 Benton 47005 122203 1 222 3 73.8

41 Bledsoe 47007 122108 1 221 8 100.0

41 Blount 47009 122110 1 221 10 95.3

41 Bradley 47011 122110 1 221 10 94.8

41 Campbell 47013 122109 1 221 9 92.2

41 Cannon 47015 122205 1 222 5 100.0

41 Carroll 47017 122203 1 222 3 100.0

41 Carter 47019 222104 2 221 4 52.5

41 Cheatham 47021 122205 1 222 5 100.0

41 Chester 47023 122203 1 222 3 100.0

41 Claiborne 47025 122109 1 221 9 100.0

41 Clay 47027 122205 1 222 5 100.0

41 Cocke 47029 122110 1 221 10 64.0

41 Coffee 47031 122205 1 222 5 100.0

41 Crockett 47033 122203 1 222 3 100.0

41 Cumberland 47035 122108 1 221 8 99.7

41 Davidson 47037 122205 1 222 5 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
74

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Tennessee (cont.) 41 Decatur 47039 122203 1 222 3 97.6

 41 DeKalb 47041 122205 1 222 5 100.0

41 Dickson 47043 122205 1 222 5 100.0

41 Dyer 47045 122203 1 222 3 60.7

41 Fayette 47047 123102 1 231 2 89.1

41 Fentress 47049 122108 1 221 8 99.9

41 Franklin 47051 122205 1 222 5 81.9

41 Gibson 47053 122203 1 222 3 100.0

41 Giles 47055 122205 1 222 5 100.0

41 Grainger 47057 122109 1 221 9 53.9

41 Greene 47059 222101 2 221 1 53.4

41 Grundy 47061 122108 1 221 8 53.4

41 Hamblen 47063 122110 1 221 10 100.0

41 Hamilton 47065 122108 1 221 8 98.4

41 Hancock 47067 122109 1 221 9 100.0

41 Hardeman 47069 122203 1 222 3 55.0

41 Hardin 47071 122203 1 222 3 67.4

41 Hawkins 47073 122109 1 221 9 36.9

41 Haywood 47075 122203 1 222 3 97.4

41 Henderson 47077 122203 1 222 3 100.0

41 Henry 47079 122203 1 222 3 100.0

41 Hickman 47081 122205 1 222 5 100.0

41 Houston 47083 122205 1 222 5 100.0

41 Humphreys 47085 122205 1 222 5 100.0

41 Jackson 47087 122205 1 222 5 100.0

41 Jefferson 47089 122110 1 221 10 100.0

41 Johnson 47091 222104 2 221 4 58.1

41 Knox 47093 122110 1 221 10 96.1

41 Lake 47095 123401 1 234 1 100.0

41 Lauderdale 47097 122203 1 222 3 59.2

41 Lawrence 47099 122205 1 222 5 82.2

41 Lewis 47101 122205 1 222 5 100.0

41 Lincoln 47103 122205 1 222 5 100.0

41 Loudon 47105 122110 1 221 10 100.0

41 McMinn 47107 122110 1 221 10 100.0

41 McNairy 47109 122203 1 222 3 76.2

41 Macon 47111 122205 1 222 5 100.0

41 Madison 47113 122203 1 222 3 100.0

41 Marion 47115 122108 1 221 8 100.0

41 Marshall 47117 122205 1 222 5 100.0

41 Maury 47119 122205 1 222 5 100.0

41 Meigs 47121 122110 1 221 10 64.0

41 Monroe 47123 122110 1 221 10 81.5

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
75

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Tennessee (cont.) 41 Montgomery 47125 122205 1 222 5 100.0

 41 Moore 47127 122205 1 222 5 100.0

41 Morgan 47129 122108 1 221 8 76.1

41 Obion 47131 122203 1 222 3 66.0

41 Overton 47133 122205 1 222 5 88.3

41 Perry 47135 122205 1 222 5 81.3

41 Pickett 47137 122205 1 222 5 67.1

41 Polk 47139 122110 1 221 10 65.4

41 Putnam 47141 122205 1 222 5 96.2

41 Rhea 47143 122108 1 221 8 99.5

41 Roane 47145 122110 1 221 10 37.8

41 Robertson 47147 122205 1 222 5 100.0

41 Rutherford 47149 122205 1 222 5 100.0

41 Scott 47151 122108 1 221 8 70.7

41 Sequatchie 47153 122108 1 221 8 99.7

41 Sevier 47155 122110 1 221 10 76.7

41 Shelby 47157 123102 1 231 2 54.4

41 Smith 47159 122205 1 222 5 100.0

41 Stewart 47161 122205 1 222 5 87.9

41 Sullivan 47163 222101 2 221 1 100.0

41 Sumner 47165 122205 1 222 5 100.0

41 Tipton 47167 123102 1 231 2 57.6

41 Trousdale 47169 122205 1 222 5 100.0

41 Unicoi 47171 222104 2 221 4 79.8

41 Union 47173 122109 1 221 9 96.5

41 Van Buren 47175 122108 1 221 8 50.8

41 Warren 47177 122205 1 222 5 99.5

41 Washington 47179 222101 2 221 1 100.0

41 Wayne 47181 123102 1 231 2 69.1

41 Weakley 47183 122203 1 222 3 100.0

41 White 47185 122205 1 222 5 89.5

41 Williamson 47187 122205 1 222 5 100.0

41 Wilson 47189 122205 1 222 5 100.0

Texas 41 Anderson 48001 125503 1 255 3 73.6

41 Andrews 48003 131502 1 315 2 99.9

41 Angelina 48005 123105 1 231 5 100.0

41 Aransas 48007 125504 1 255 4 75.1

41 Archer 48009 131503 1 315 3 68.8

41 Armstrong 48011 131502 1 315 2 94.2

41 Atascosa 48013 131505 1 315 5 100.0

41 Austin 48015 125503 1 255 3 86.1

41 Bailey 48017 131502 1 315 2 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
76

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Texas (cont.) 41 Bandera 48019 131504 1 315 4 100.0

 41 Bastrop 48021 125502 1 255 2 60.7

41 Baylor 48023 131503 1 315 3 100.0

41 Bee 48025 131505 1 315 5 99.8

41 Bell 48027 125502 1 255 2 59.2

41 Bexar 48029 131504 1 315 4 52.7

41 Blanco 48031 131504 1 315 4 100.0

41 Borden 48033 131503 1 315 3 80.1

41 Bosque 48035 131504 1 315 4 51.3

41 Bowie 48037 123105 1 231 5 88.6

41 Brazoria 48039 125504 1 255 4 100.0

41 Brazos 48041 125503 1 255 3 100.0

41 Brewster 48043 132101 1 321 1 87.7

41 Briscoe 48045 131502 1 315 2 57.7

41 Brooks 48047 131505 1 315 5 100.0

41 Brown 48049 131503 1 315 3 67.7

41 Burleson 48051 125503 1 255 3 98.4

41 Burnet 48053 131504 1 315 4 100.0

41 Caldwell 48055 125502 1 255 2 71.0

41 Calhoun 48057 125504 1 255 4 100.0

41 Callahan 48059 131503 1 315 3 100.0

41 Cameron 48061 131505 1 315 5 73.6

41 Camp 48063 123105 1 231 5 79.8

41 Carson 48065 131502 1 315 2 100.0

41 Cass 48067 123105 1 231 5 100.0

41 Castro 48069 131502 1 315 2 100.0

41 Chambers 48071 123106 1 231 6 97.1

41 Cherokee 48073 123105 1 231 5 100.0

41 Childress 48075 131503 1 315 3 94.0

41 Clay 48077 125501 1 255 1 82.6

41 Cochran 48079 131502 1 315 2 100.0

41 Coke 48081 131503 1 315 3 100.0

41 Coleman 48083 131503 1 315 3 100.0

41 Collin 48085 125501 1 255 1 66.4

41 Collingsworth 48087 131101 1 311 1 64.6

41 Colorado 48089 125503 1 255 3 93.8

41 Comal 48091 131504 1 315 4 96.1

41 Comanche 48093 125501 1 255 1 88.4

41 Concho 48095 131503 1 315 3 100.0

41 Cooke 48097 125501 1 255 1 100.0

41 Coryell 48099 131504 1 315 4 99.9

41 Cottle 48101 131503 1 315 3 100.0

41 Crane 48103 132101 1 321 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
77

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Texas (cont.) 41 Crockett 48105 132102 1 321 2 54.2

 41 Crosby 48107 131502 1 315 2 84.7

41 Culberson 48109 132101 1 321 1 83.8

41 Dallam 48111 131502 1 315 2 97.3

41 Dallas 48113 125501 1 255 1 59.7

41 Dawson 48115 131502 1 315 2 100.0

41 Deaf Smith 48117 131502 1 315 2 100.0

41 Delta 48119 125502 1 255 2 58.7

41 Denton 48121 125501 1 255 1 100.0

41 De Witt 48123 125503 1 255 3 78.3

41 Dickens 48125 131503 1 315 3 92.1

41 Dimmit 48127 131505 1 315 5 100.0

41 Donley 48129 131503 1 315 3 70.4

41 Duval 48131 131505 1 315 5 100.0

41 Eastland 48133 125501 1 255 1 88.4

41 Ector 48135 132101 1 321 1 69.2

41 Edwards 48137 131504 1 315 4 56.0

41 Ellis 48139 125502 1 255 2 73.4

41 El Paso 48141 132101 1 321 1 100.0

41 Erath 48143 125501 1 255 1 100.0

41 Falls 48145 125502 1 255 2 100.0

41 Fannin 48147 125502 1 255 2 52.2

41 Fayette 48149 125503 1 255 3 100.0

41 Fisher 48151 131503 1 315 3 100.0

41 Floyd 48153 131502 1 315 2 99.1

41 Foard 48155 131503 1 315 3 100.0

41 Fort Bend 48157 125504 1 255 4 100.0

41 Franklin 48159 125503 1 255 3 100.0

41 Freestone 48161 125503 1 255 3 83.6

41 Frio 48163 131505 1 315 5 100.0

41 Gaines 48165 131502 1 315 2 100.0

41 Galveston 48167 125504 1 255 4 83.5

41 Garza 48169 131503 1 315 3 69.7

41 Gillespie 48171 131504 1 315 4 100.0

41 Glasscock 48173 131502 1 315 2 93.2

41 Goliad 48175 125503 1 255 3 56.9

41 Gonzales 48177 125503 1 255 3 99.7

41 Gray 48179 131502 1 315 2 100.0

41 Grayson 48181 125501 1 255 1 100.0

41 Gregg 48183 123105 1 231 5 100.0

41 Grimes 48185 125503 1 255 3 100.0

41 Guadalupe 48187 125502 1 255 2 56.7

41 Hale 48189 131502 1 315 2 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
78

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Texas (cont.) 41 Hall 48191 131503 1 315 3 100.0

 41 Hamilton 48193 131504 1 315 4 84.0

41 Hansford 48195 131502 1 315 2 61.5

41 Hardeman 48197 131503 1 315 3 100.0

41 Hardin 48199 123105 1 231 5 81.4

41 Harris 48201 125504 1 255 4 74.3

41 Harrison 48203 123105 1 231 5 100.0

41 Hartley 48205 131502 1 315 2 100.0

41 Haskell 48207 131503 1 315 3 100.0

41 Hays 48209 131504 1 315 4 69.3

41 Hemphill 48211 131502 1 315 2 100.0

41 Henderson 48213 125503 1 255 3 74.9

41 Hidalgo 48215 131505 1 315 5 100.0

41 Hill 48217 125501 1 255 1 65.4

41 Hockley 48219 131502 1 315 2 100.0

41 Hood 48221 125501 1 255 1 100.0

41 Hopkins 48223 125503 1 255 3 94.2

41 Houston 48225 123105 1 231 5 60.9

41 Howard 48227 131502 1 315 2 86.7

41 Hudspeth 48229 132101 1 321 1 100.0

41 Hunt 48231 125502 1 255 2 100.0

41 Hutchinson 48233 131502 1 315 2 100.0

41 Irion 48235 131503 1 315 3 100.0

41 Jack 48237 125501 1 255 1 100.0

41 Jackson 48239 125504 1 255 4 88.3

41 Jasper 48241 123206 1 232 6 83.4

41 Jeff Davis 48243 132101 1 321 1 100.0

41 Jefferson 48245 123106 1 231 6 97.0

41 Jim Hogg 48247 131505 1 315 5 100.0

41 Jim Wells 48249 131505 1 315 5 100.0

41 Johnson 48251 125501 1 255 1 100.0

41 Jones 48253 131503 1 315 3 100.0

41 Karnes 48255 131505 1 315 5 100.0

41 Kaufman 48257 125502 1 255 2 100.0

41 Kendall 48259 131504 1 315 4 100.0

41 Kenedy 48261 131505 1 315 5 72.3

41 Kent 48263 131503 1 315 3 100.0

41 Kerr 48265 131504 1 315 4 100.0

41 Kimble 48267 131504 1 315 4 100.0

41 King 48269 131503 1 315 3 100.0

41 Kinney 48271 132102 1 321 2 80.3

41 Kleberg 48273 131506 1 315 6 63.3

41 Knox 48275 131503 1 315 3 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
79

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Texas (cont.) 41 Lamar 48277 125503 1 255 3 83.8

 41 Lamb 48279 131502 1 315 2 100.0

41 Lampasas 48281 131504 1 315 4 100.0

41 La Salle 48283 131505 1 315 5 100.0

41 Lavaca 48285 125503 1 255 3 100.0

41 Lee 48287 125503 1 255 3 68.9

41 Leon 48289 125503 1 255 3 100.0

41 Liberty 48291 123105 1 231 5 61.0

41 Limestone 48293 125502 1 255 2 85.4

41 Lipscomb 48295 133102 1 331 2 69.1

41 Live Oak 48297 131505 1 315 5 100.0

41 Llano 48299 131504 1 315 4 100.0

41 Loving 48301 132101 1 321 1 100.0

41 Lubbock 48303 131502 1 315 2 100.0

41 Lynn 48305 131502 1 315 2 99.7

41 McCulloch 48307 131503 1 315 3 74.5

41 McLennan 48309 125502 1 255 2 75.0

41 McMullen 48311 131505 1 315 5 100.0

41 Madison 48313 125503 1 255 3 100.0

41 Marion 48315 123105 1 231 5 100.0

41 Martin 48317 131502 1 315 2 100.0

41 Mason 48319 131504 1 315 4 100.0

41 Matagorda 48321 125504 1 255 4 100.0

41 Maverick 48323 131505 1 315 5 66.9

41 Medina 48325 131504 1 315 4 53.6

41 Menard 48327 131504 1 315 4 53.3

41 Midland 48329 131502 1 315 2 92.7

41 Milam 48331 125502 1 255 2 89.5

41 Mills 48333 131504 1 315 4 100.0

41 Mitchell 48335 131503 1 315 3 93.9

41 Montague 48337 125501 1 255 1 100.0

41 Montgomery 48339 123105 1 231 5 81.6

41 Moore 48341 131502 1 315 2 100.0

41 Morris 48343 123105 1 231 5 80.7

41 Motley 48345 131503 1 315 3 85.6

41 Nacogdoches 48347 123105 1 231 5 100.0

41 Navarro 48349 125502 1 255 2 93.2

41 Newton 48351 123206 1 232 6 100.0

41 Nolan 48353 131503 1 315 3 100.0

41 Nueces 48355 131506 1 315 6 84.2

41 Ochiltree 48357 133102 1 331 2 56.0

41 Oldham 48359 131502 1 315 2 100.0

41 Orange 48361 123205 1 232 5 70.4

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
80

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Texas (cont.) 41 Palo Pinto 48363 125501 1 255 1 100.0

 41 Panola 48365 123105 1 231 5 100.0

41 Parker 48367 125501 1 255 1 100.0

41 Parmer 48369 131502 1 315 2 100.0

41 Pecos 48371 132101 1 321 1 61.3

41 Polk 48373 123105 1 231 5 100.0

41 Potter 48375 131502 1 315 2 100.0

41 Presidio 48377 132101 1 321 1 100.0

41 Rains 48379 125503 1 255 3 69.4

41 Randall 48381 131502 1 315 2 100.0

41 Reagan 48383 131503 1 315 3 94.0

41 Real 48385 131504 1 315 4 100.0

41 Red River 48387 125503 1 255 3 95.9

41 Reeves 48389 132101 1 321 1 100.0

41 Refugio 48391 125504 1 255 4 62.6

41 Roberts 48393 131502 1 315 2 100.0

41 Robertson 48395 125503 1 255 3 78.1

41 Rockwall 48397 125502 1 255 2 100.0

41 Runnels 48399 131503 1 315 3 100.0

41 Rusk 48401 123105 1 231 5 100.0

41 Sabine 48403 123206 1 232 6 99.9

41 San Augustine 48405 123105 1 231 5 86.0

41 San Jacinto 48407 123105 1 231 5 100.0

41 San Patricio 48409 131506 1 315 6 66.1

41 San Saba 48411 131504 1 315 4 98.1

41 Schleicher 48413 131503 1 315 3 95.9

41 Scurry 48415 131503 1 315 3 100.0

41 Shackelford 48417 131503 1 315 3 100.0

41 Shelby 48419 123105 1 231 5 94.6

41 Sherman 48421 131502 1 315 2 74.4

41 Smith 48423 123105 1 231 5 86.2

41 Somervell 48425 125501 1 255 1 100.0

41 Starr 48427 131505 1 315 5 100.0

41 Stephens 48429 125501 1 255 1 96.5

41 Sterling 48431 131503 1 315 3 85.4

41 Stonewall 48433 131503 1 315 3 100.0

41 Sutton 48435 131503 1 315 3 58.7

41 Swisher 48437 131502 1 315 2 100.0

41 Tarrant 48439 125501 1 255 1 100.0

41 Taylor 48441 131503 1 315 3 100.0

41 Terrell 48443 132102 1 321 2 100.0

41 Terry 48445 131502 1 315 2 100.0

41 Throckmorton 48447 131503 1 315 3 94.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
81

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Texas (cont.) 41 Titus 48449 125503 1 255 3 84.8

 41 Tom Green 48451 131503 1 315 3 100.0

41 Travis 48453 125502 1 255 2 55.3

41 Trinity 48455 123105 1 231 5 100.0

41 Tyler 48457 123105 1 231 5 74.2

41 Upshur 48459 123105 1 231 5 100.0

41 Upton 48461 132101 1 321 1 58.4

41 Uvalde 48463 131504 1 315 4 54.2

41 Val Verde 48465 132102 1 321 2 100.0

41 Van Zandt 48467 125503 1 255 3 61.6

41 Victoria 48469 125504 1 255 4 52.5

41 Walker 48471 123105 1 231 5 70.1

41 Waller 48473 125503 1 255 3 73.0

41 Ward 48475 132101 1 321 1 100.0

41 Washington 48477 125503 1 255 3 100.0

41 Webb 48479 131505 1 315 5 100.0

41 Wharton 48481 125504 1 255 4 99.3

41 Wheeler 48483 131502 1 315 2 88.0

41 Wichita 48485 131503 1 315 3 73.8

41 Wilbarger 48487 131503 1 315 3 88.1

41 Willacy 48489 131505 1 315 5 76.9

41 Williamson 48491 125502 1 255 2 54.9

41 Wilson 48493 131505 1 315 5 99.4

41 Winkler 48495 132101 1 321 1 96.2

41 Wise 48497 125501 1 255 1 100.0

41 Wood 48499 125503 1 255 3 70.8

41 Yoakum 48501 131502 1 315 2 100.0

41 Young 48503 125501 1 255 1 92.3

41 Zapata 48505 131505 1 315 5 100.0

41 Zavala 48507 131505 1 315 5 100.0

Utah 32 Beaver 49001 134101 1 341 1 54.5

32 Box Elder 49003 134101 1 341 1 52.4

32 Cache 49005 233104 2 331 4 88.7

32 Carbon 49007 233104 2 331 4 62.1

32 Daggett 49009 233105 2 331 5 97.8

32 Davis 49011 134101 1 341 1 27.2

32 Duchesne 49013 233105 2 331 5 53.2

32 Emery 49015 134102 1 341 2 77.1

32 Garfield 49017 234103 2 341 3 54.5

32 Grand 49019 134102 1 341 2 66.9

32 Iron 49021 234103 2 341 3 58.3

32 Juab 49023 134101 1 341 1 88.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
82

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Utah (cont.) 32 Kane 49025 131301 1 313 1 83.8

 32 Millard 49027 134101 1 341 1 82.7

32 Morgan 49029 233104 2 331 4 100.0

32 Piute 49031 234103 2 341 3 94.4

32 Rich 49033 233104 2 331 4 55.5

32 Salt Lake 49035 134101 1 341 1 76.6

32 San Juan 49037 131301 1 313 1 48.6

32 Sanpete 49039 134101 1 341 1 71.0

32 Sevier 49041 234103 2 341 3 72.8

32 Summit 49043 233105 2 331 5 54.6

32 Tooele 49045 134101 1 341 1 89.2

32 Uintah 49047 134103 1 341 3 54.2

32 Utah 49049 134101 1 341 1 59.6

32 Wasatch 49051 233104 2 331 4 70.8

32 Washington 49053 131301 1 313 1 32.5

32 Wayne 49055 134102 1 341 2 60.6

32 Weber 49057 233104 2 331 4 54.5

Vermont 12 Addison 50001 121205 1 212 5 75.9

12 Bennington 50003 221203 2 212 3 100.0

12 Caledonia 50005 221202 2 212 2 53.6

12 Chittenden 50007 121205 1 212 5 63.8

12 Essex 50009 221201 2 212 1 94.3

12 Franklin 50011 121205 1 212 5 52.7

12 Grand Isle 50013 121205 1 212 5 100.0

12 Lamoille 50015 221203 2 212 3 90.4

12 Orange 50017 221202 2 212 2 83.3

12 Orleans 50019 221202 2 212 2 61.0

12 Rutland 50021 221203 2 212 3 80.4

12 Washington 50023 221203 2 212 3 64.4

12 Windham 50025 221203 2 212 3 68.2

12 Windsor 50027 221202 2 212 2 51.2

Virginia 42 Accomack 51001 123201 1 232 1 100.0

42 Albemarle 51003 222104 2 221 4 51.8

42 Alexandria City 51510 123101 1 231 1 100.0

42 Alleghany 51005 222101 2 221 1 100.0

42 Amelia 51007 123101 1 231 1 100.0

42 Amherst 51009 222104 2 221 4 50.2

42 Appomattox 51011 123101 1 231 1 100.0

42 Arlington 51013 123101 1 231 1 100.0

42 Augusta 51015 222101 2 221 1 100.0

42 Bath 51017 222101 2 221 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
83

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Virginia (cont.) 42 Bedford 51019 222104 2 221 4 48.1

 42 Bedford City 51515 222104 2 221 4 100.0

42 Bland 51021 222101 2 221 1 100.0

42 Botetourt 51023 222101 2 221 1 100.0

42 Bristol City 51520 222101 2 221 1 100.0

42 Brunswick 51025 123101 1 231 1 100.0

42 Buchanan 51027 222103 2 221 3 100.0

42 Buckingham 51029 123101 1 231 1 100.0

42 Buena Vista City 51530 222101 2 221 1 100.0

42 Campbell 51031 123101 1 231 1 100.0

42 Caroline 51033 123201 1 232 1 52.2

42 Carroll 51035 222104 2 221 4 95.0

42 Charles City County 51036 123201 1 232 1 100.0

42 Charlotte 51037 123101 1 231 1 100.0

42 Charlottesville City 51540 222104 2 221 4 100.0

42 Chesapeake City 51550 123201 1 232 1 100.0

42 Chesterfield 51041 123101 1 231 1 85.3

42 Clarke 51043 222101 2 221 1 68.0

42 Clifton Forge City 51560 222101 2 221 1 100.0

42 Colonial Heights City 51570 123201 1 232 1 100.0

42 Covington City 51580 222101 2 221 1 100.0

42 Craig 51045 222101 2 221 1 100.0

42 Culpeper 51047 123101 1 231 1 67.2

42 Cumberland 51049 123101 1 231 1 100.0

42 Danville City 51590 123101 1 231 1 100.0

42 Dickenson 51051 222103 2 221 3 100.0

42 Dinwiddie 51053 123101 1 231 1 85.6

42 Emporia City 51595 123201 1 232 1 100.0

42 Essex 51057 123201 1 232 1 100.0

42 Fairfax 51059 123101 1 231 1 100.0

42 Fairfax City 51600 123101 1 231 1 100.0

42 Falls Church City 51610 123101 1 231 1 100.0

42 Fauquier 51061 123101 1 231 1 52.2

42 Floyd 51063 222104 2 221 4 78.8

42 Fluvanna 51065 123101 1 231 1 100.0

42 Franklin 51067 123101 1 231 1 55.5

42 Franklin City 51620 123201 1 232 1 100.0

42 Frederick 51069 222101 2 221 1 100.0

42 Fredericksburg City 51630 123101 1 231 1 100.0

42 Galax City 51640 222104 2 221 4 100.0

42 Giles 51071 222101 2 221 1 100.0

42 Gloucester 51073 123201 1 232 1 100.0

42 Goochland 51075 123101 1 231 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
84

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Virginia (cont.) 42 Grayson 51077 222104 2 221 4 81.4

 42 Greene 51079 222104 2 221 4 83.0

42 Greensville 51081 123201 1 232 1 62.2

42 Halifax 51083 123101 1 231 1 100.0

42 Hampton City 51650 123201 1 232 1 100.0

42 Hanover 51085 123101 1 231 1 64.7

42 Harrisonburg City 51660 222101 2 221 1 100.0

42 Henrico 51087 123201 1 232 1 60.7

42 Henry 51089 123101 1 231 1 100.0

42 Highland 51091 222101 2 221 1 100.0

42 Hopewell City 51670 123201 1 232 1 100.0

42 Isle of Wight 51093 123201 1 232 1 100.0

42 James City County 51095 123201 1 232 1 100.0

42 King and Queen 51097 123201 1 232 1 100.0

42 King George 51099 123201 1 232 1 85.0

42 King William 51101 123201 1 232 1 100.0

42 Lancaster 51103 123201 1 232 1 100.0

42 Lee 51105 122109 1 221 9 100.0

42 Lexington City 51678 222101 2 221 1 100.0

42 Loudoun 51107 222104 2 221 4 67.5

42 Louisa 51109 123101 1 231 1 100.0

42 Lunenburg 51111 123101 1 231 1 100.0

42 Lynchburg City 51680 123101 1 231 1 100.0

42 Madison 51113 222104 2 221 4 84.0

42 Manassas City 51683 123101 1 231 1 100.0

42 Manassas Park City 51685 123101 1 231 1 100.0

42 Martinsville City 51690 123101 1 231 1 100.0

42 Mathews 51115 123201 1 232 1 100.0

42 Mecklenburg 51117 123101 1 231 1 100.0

42 Middlesex 51119 123201 1 232 1 100.0

42 Montgomery 51121 222101 2 221 1 100.0

42 Nelson 51125 222104 2 221 4 56.1

42 New Kent 51127 123201 1 232 1 100.0

42 Newport News City 51700 123201 1 232 1 100.0

42 Norfolk City 51710 123201 1 232 1 100.0

42 Northampton 51131 123201 1 232 1 100.0

42 Northumberland 51133 123201 1 232 1 100.0

42 Norton City 51720 222103 2 221 3 53.8

42 Nottoway 51135 123101 1 231 1 100.0

42 Orange 51137 123101 1 231 1 93.6

42 Page 51139 222101 2 221 1 96.7

42 Patrick 51141 222104 2 221 4 55.1

42 Petersburg City 51730 123201 1 232 1 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
85

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Virginia (cont.) 42 Pittsylvania 51143 123101 1 231 1 100.0

 42 Poquoson City 51735 123201 1 232 1 100.0

42 Portsmouth City 51740 123201 1 232 1 100.0

42 Powhatan 51145 123101 1 231 1 100.0

42 Prince Edward 51147 123101 1 231 1 100.0

42 Prince George 51149 123201 1 232 1 100.0

42 Prince William 51153 123101 1 231 1 100.0

42 Pulaski 51155 222101 2 221 1 100.0

42 Radford City 51750 222101 2 221 1 100.0

42 Rappahannock 51157 222104 2 221 4 99.0

42 Richmond 51159 123201 1 232 1 100.0

42 Richmond City 51760 123101 1 231 1 85.3

42 Roanoke 51161 222101 2 221 1 85.7

42 Roanoke City 222101 2 221 1 95.0

42 Rockbridge 51163 222101 2 221 1 100.0

42 Rockingham 51165 222101 2 221 1 100.0

42 Russell 51167 222103 2 221 3 50.4

42 Salem City 51775 222101 2 221 1 100.0

42 Scott 51169 222101 2 221 1 61.9

42 Shenandoah 51171 222101 2 221 1 100.0

42 Smyth 51173 222101 2 221 1 100.0

42 Southampton 51175 123201 1 232 1 100.0

42 South Boston City 51780 123101 1 231 1 100.0

42 Spotsylvania 51177 123101 1 231 1 100.0

42 Stafford 51179 123101 1 231 1 100.0

42 Staunton City 51790 222101 2 221 1 100.0

42 Suffolk City 51800 123201 1 232 1 100.0

42 Surry 51181 123201 1 232 1 100.0

42 Sussex 51183 123201 1 232 1 98.3

42 Tazewell 51185 222101 2 221 1 53.1

42 Virginia Beach City 51810 123201 1 232 1 100.0

42 Warren 51187 222101 2 221 1 80.9

42 Washington 51191 222101 2 221 1 100.0

42 Waynesboro City 51820 222101 2 221 1 100.0

42 Westmoreland 51193 123201 1 232 1 100.0

42 Williamsburg City 51830 123201 1 232 1 100.0

42 Winchester City 51840 222101 2 221 1 100.0

42 Wise 51195 222103 2 221 3 64.2

42 Wythe 51197 222101 2 221 1 100.0

42 York 51199 123201 1 232 1 100.0

Washington 21 Adams 53001 134209 1 342 9 100.0

21 Asotin 53003 233207 2 332 7 70.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
86

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Washington (cont.) 21 Benton 53005 134209 1 342 9 100.0

 21 Chelan 53007 224203 2 242 3 91.7

21 Clallam 53009 224201 2 242 1 97.4

21 Clark 53011 124201 1 242 1 88.1

21 Columbia 53013 133101 1 331 1 47.3

21 Cowlitz 53015 124201 1 242 1 97.0

21 Douglas 53017 134209 1 342 9 74.0

21 Ferry 53019 233301 2 333 1 100.0

21 Franklin 53021 134209 1 342 9 100.0

21 Garfield 53023 133101 1 331 1 66.4

21 Grant 53025 134209 1 342 9 97.8

21 Grays Harbor 53027 224201 2 242 1 96.9

21 Island 53029 124201 1 242 1 100.0

21 Jefferson 53031 224201 2 242 1 79.2

21 King 53033 224202 2 242 2 51.5

21 Kitsap 53035 124201 1 242 1 100.0

21 Kittitas 53037 134209 1 342 9 52.9

21 Klickitat 53039 224203 2 242 3 52.3

21 Lewis 53041 224202 2 242 2 43.7

21 Lincoln 53043 134209 1 342 9 77.9

21 Mason 53045 224201 2 242 1 56.7

21 Okanogan 53047 224203 2 242 3 50.7

21 Pacific 53049 224201 2 242 1 100.0

21 Pend Oreille 53051 233301 2 333 1 100.0

21 Pierce 53053 224202 2 242 2 51.6

21 San Juan 53055 124201 1 242 1 100.0

21 Skagit 53057 224202 2 242 2 56.5

21 Skamania 53059 224202 2 242 2 75.8

21 Snohomish 53061 224202 2 242 2 58.7

21 Spokane 53063 233301 2 333 1 47.5

21 Stevens 53065 233301 2 333 1 100.0

21 Thurston 53067 124201 1 242 1 98.3

21 Wahkiakum 53069 224201 2 242 1 100.0

21 Walla Walla 53071 134209 1 342 9 81.4

21 Whatcom 53073 224202 2 242 2 53.7

21 Whitman 53075 133101 1 331 1 60.1

21 Yakima 53077 134209 1 342 9 51.2

West Virginia 12 Barbour 54001 222102 2 221 2 74.7

12 Berkeley 54003 222101 2 221 1 100.0

12 Boone 54005 222103 2 221 3 75.3

12 Braxton 54007 122105 1 221 5 81.1

12 Brooke 54009 122105 1 221 5 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
87

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

West Virginia (cont.) 12 Cabell 54011 122105 1 221 5 100.0

 12 Calhoun 54013 122105 1 221 5 100.0

12 Clay 54015 122105 1 221 5 76.3

12 Doddridge 54017 122105 1 221 5 100.0

12 Fayette 54019 222102 2 221 2 58.9

12 Gilmer 54021 122105 1 221 5 100.0

12 Grant 54023 222101 2 221 1 62.0

12 Greenbrier 54025 222101 2 221 1 60.2

12 Hampshire 54027 222101 2 221 1 100.0

12 Hancock 54029 122105 1 221 5 100.0

12 Hardy 54031 222101 2 221 1 100.0

12 Harrison 54033 122105 1 221 5 100.0

12 Jackson 54035 122105 1 221 5 100.0

12 Jefferson 54037 222101 2 221 1 67.7

12 Kanawha 54039 122105 1 221 5 75.1

12 Lewis 54041 122105 1 221 5 94.2

12 Lincoln 54043 122105 1 221 5 100.0

12 Logan 54045 222103 2 221 3 82.9

12 McDowell 54047 222103 2 221 3 100.0

12 Marion 54049 122105 1 221 5 96.8

12 Marshall 54051 122105 1 221 5 100.0

12 Mason 54053 122105 1 221 5 100.0

12 Mercer 54055 222101 2 221 1 74.2

12 Mineral 54057 222101 2 221 1 69.7

12 Mingo 54059 222103 2 221 3 54.0

12 Monongalia 54061 122105 1 221 5 75.6

12 Monroe 54063 222101 2 221 1 100.0

12 Morgan 54065 222101 2 221 1 100.0

12 Nicholas 54067 222102 2 221 2 74.4

12 Ohio 54069 122105 1 221 5 100.0

12 Pendleton 54071 222101 2 221 1 99.2

12 Pleasants 54073 122105 1 221 5 100.0

12 Pocahontas 54075 222101 2 221 1 78.8

12 Preston 54077 222102 2 221 2 100.0

12 Putnam 54079 122105 1 221 5 100.0

12 Raleigh 54081 222103 2 221 3 54.8

12 Randolph 54083 222102 2 221 2 95.4

12 Ritchie 54085 122105 1 221 5 100.0

12 Roane 54087 122105 1 221 5 100.0

12 Summers 54089 222101 2 221 1 71.7

12 Taylor 54091 222102 2 221 2 53.0

12 Tucker 54093 222102 2 221 2 96.4

12 Tyler 54095 122105 1 221 5 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
88

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

West Virginia (cont.) 12 Upshur 54097 222102 2 221 2 67.7

 12 Wayne 54099 122105 1 221 5 100.0

12 Webster 54101 222102 2 221 2 100.0

12 Wetzel 54103 122105 1 221 5 100.0

12 Wirt 54105 122105 1 221 5 100.0

12 Wood 54107 122105 1 221 5 100.0

12 Wyoming 54109 222103 2 221 3 100.0

Wisconsin 11 Adams 55001 122211 1 222 11 100.0

11 Ashland 55003 121210 1 212 10 100.0

11 Barron 55005 121210 1 212 10 99.5

11 Bayfield 55007 121210 1 212 10 72.3

11 Brown 55009 121208 1 212 8 100.0

11 Buffalo 55011 122212 1 222 12 100.0

11 Burnett 55013 121211 1 212 11 91.6

11 Calumet 55015 122211 1 222 11 76.6

11 Chippewa 55017 121210 1 212 10 70.7

11 Clark 55019 121210 1 212 10 94.3

11 Columbia 55021 122211 1 222 11 100.0

11 Crawford 55023 122212 1 222 12 100.0

11 Dane 55025 122211 1 222 11 82.1

11 Dodge 55027 122211 1 222 11 100.0

11 Door 55029 121208 1 212 8 100.0

11 Douglas 55031 121211 1 212 11 67.1

11 Dunn 55033 122213 1 222 13 94.9

11 Eau Claire 55035 122212 1 222 12 72.0

11 Florence 55037 121210 1 212 10 100.0

11 Fond Du Lac 55039 122211 1 222 11 100.0

11 Forest 55041 121210 1 212 10 100.0

11 Grant 55043 122212 1 222 12 100.0

11 Green 55045 122212 1 222 12 38.3

11 Green Lake 55047 122211 1 222 11 100.0

11 Iowa 55049 122212 1 222 12 100.0

11 Iron 55051 121210 1 212 10 100.0

11 Jackson 55053 122212 1 222 12 56.9

11 Jefferson 55055 122211 1 222 11 100.0

11 Juneau 55057 122211 1 222 11 65.6

11 Kenosha 55059 122211 1 222 11 100.0

11 Kewaunee 55061 121208 1 212 8 100.0

11 La Crosse 55063 122212 1 222 12 100.0

11 Lafayette 55065 122212 1 222 12 100.0

11 Langlade 55067 121210 1 212 10 100.0

11 Lincoln 55069 121210 1 212 10 100.0

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
89

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Wisconsin (cont.) 11 Manitowoc 55071 121208 1 212 8 99.4

 11 Marathon 55073 121210 1 212 10 100.0

11 Marinette 55075 121210 1 212 10 61.2

11 Marquette 55077 122211 1 222 11 100.0

11 Menominee 55078 121210 1 212 10 99.2

11 Milwaukee 55079 122211 1 222 11 100.0

11 Monroe 55081 122212 1 222 12 84.4

11 Oconto 55083 121208 1 212 8 54.9

11 Oneida 55085 121210 1 212 10 100.0

11 Outagamie 55087 121208 1 212 8 93.1

11 Ozaukee 55089 122211 1 222 11 95.5

11 Pepin 55091 122212 1 222 12 81.0

11 Pierce 55093 122213 1 222 13 80.7

11 Polk 55095 121210 1 212 10 70.2

11 Portage 55097 122211 1 222 11 57.0

11 Price 55099 121210 1 212 10 100.0

11 Racine 55101 122211 1 222 11 100.0

11 Richland 55103 122212 1 222 12 100.0

11 Rock 55105 122211 1 222 11 94.8

11 Rusk 55107 121210 1 212 10 100.0

11 St. Croix 55109 122213 1 222 13 88.8

11 Sauk 55111 122212 1 222 12 80.2

11 Sawyer 55113 121210 1 212 10 90.3

11 Shawano 55115 121210 1 212 10 63.6

11 Sheboygan 55117 122211 1 222 11 54.2

11 Taylor 55119 121210 1 212 10 100.0

11 Trempealeau 55121 122212 1 222 12 100.0

11 Vernon 55123 122212 1 222 12 100.0

11 Vilas 55125 121210 1 212 10 100.0

11 Walworth 55127 122211 1 222 11 100.0

11 Washburn 55129 121211 1 212 11 62.7

11 Washington 55131 122211 1 222 11 100.0

11 Waukesha 55133 122211 1 222 11 100.0

11 Waupaca 55135 121210 1 212 10 53.3

11 Waushara 55137 122211 1 222 11 100.0

11 Winnebago 55139 122211 1 222 11 100.0

11 Wood 55141 121210 1 212 10 79.6

Wyoming 32 Albany 56001 134206 1 342 6 53.2

32 Big Horn 56003 134201 1 342 1 86.3

32 Campbell 56005 133107 1 331 7 100.0

32 Carbon 56007 134206 1 342 6 56.2

32 Converse 56009 133106 1 331 6 49.8

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)
90

 Political division Ecological division

State

 RPA 

regiona County, parish, or city

FIPS 

codeb

 Subregion 

code Mc Pc Sc

Percent of 

section area

Wyoming (cont.) 32 Crook 56011 133106 1 331 6 63.9

 32 Fremont 56013 134206 1 342 6 56.2

32 Goshen 56015 133106 1 331 6 59.2

32 Hot Springs 56017 134201 1 342 1 71.4

32 Johnson 56019 133107 1 331 7 36.8

32 Laramie 56021 133108 1 331 8 85.9

32 Lincoln 56023 134205 1 342 5 39.2

32 Natrona 56025 134206 1 342 6 62.5

32 Niobrara 56027 133106 1 331 6 94.2

32 Park 56029 233101 2 331 1 85.8

32 Platte 56031 133106 1 331 6 51.8

32 Sheridan 56033 133107 1 331 7 50.2

32 Sublette 56035 134207 1 342 7 58.2

32 Sweetwater 56037 134207 1 342 7 95.0

32 Teton 56039 233104 2 331 4 70.9

32 Uinta 56041 134205 1 342 5 33.7

32 Washakie 56043 134201 1 342 1 90.9

32 Weston 56045 133106 1 331 6 61.7

Table 1 Codes for political and ecological divisions of the coterminous United States by State; Resources Planning

Act (RPA) region; county, parish, or city; Federal Information Processing Standard (FIPS); subregion, which is a 

combination of mountain (M), province (P), and section codes (S); and the proportion of county, parish, or city 

area represented by the coded ecological section (continued)

RPA = Resources Planning Act; FIPS = Federal Information Processing Standards; M = mountian; P = province; S = section.

a Forest Service regions and subregions for the periodic Resources Planning Act assessment.

b State and county codes according to Federal Information Processing Standards (National Bureau of Standards 1980).

c

 M Mountain province: 1= no, 2 = yes; P province; S section: 1 = A, 2 = B, 3 = C, 4 = D, 5 = E, 6 = F, 7 = G, 8 = H, 9 = I, 10 = J, 11 = K, 

12 = L, 13 = M, 14 = N. 
91

Table 2—Codes for ecological sections of the coterminous United States by domain, division, province, and section

Division Province Section

Code Name Code Name Code Name

Humid Temperate Domain

210 Warm Continental 212 Lauretian Mixed Forest 212A Aroostook Hills and Lowlands

212B Maine and New Brunswick Foothills

and Eastern Lowlands

212C Fundy Coastal and Interior

212D Central Maine Coastal and Interior

212E St. Lawrence and Champlain Valley

212F Northern Glaciated Allegheny Plateau

212G Northern Unglaciated Allegheny Plateau

212H Northern Great Lakes

212J Southern Superior Uplands

212K Western Superior

212L Northern Superior Uplands

212M Northern Minnesota and Ontario

212N Northern Minnesota Draft and Lake Plains

M212 Adirondack—New England Mixed Forest

—Coniferous Forest—Alpine Meadow M212A White Mountains

M212B New England Piedmont

M212C Green, Taconic, Berkshire Mountains

M212D Adirondack Highlands

M212E Catskill Mountains

220 Hot Continental 221 Eastern Broadleaf Forest (Oceanic) 221A Lower New England

221B Hudson Valley

221C Upper Atlantic Coastal Plain

221D Northern Appalachian Piedmont

221E Southern Unglaciated Allegheny Plateau

221F Western Glaciated Allegheny Plateau

221H Northern Cumberland Plateau

221I Southern Cumberland Mountains

221J Central Ridge and Valley

222 Eastern Broadleaf Forest (Continental) 222A Ozark Highlands

222C Upper Gulf Coastal Plain

222D Interior Low Plateau, Shawnee Hills

222E Interior Low Plateau, Highland Rim

222F Interior Low Plateau, Bluegrass

222G Central Till Plains, Oak-Hickory

222H Central Till Plains, Beech-Maple

222I Erie and Ontario Lake Plain

222J South Central Great Lakes

222K Southwestern Great Lakes Morainal

222L North-Central U.S. Driftless and

Escarpment

222M Minnesota and Northeastern Iowa, Morainal

222N Lake Agassiz, Aspen Parklands

M221 Central Appalachian Broadleaf Forest—

Coniferous Forest—Meadow M221A Northern Ridge and Valley

M221B Allegheny Mountains

M221C Northern Cumberland Mountains

M221D Blue Ridge Mountains
92

Table 2—Codes for ecological sections of the coterminous United States by domain, division, province, and section

(continued)

Division Province Section

Code Name Code Name Code Name

220 Hot Continental

 (cont.) M222 Ozark Broadleaf Forest—Meadow M222A Boston Mountains

230 Subtropical 231 Southeastern Mixed Forest 231A Southern Appalachian Piedmont

231B Coastal Plains, Middle

231C Southern Cumberland Plateau

231D Southern Ridge and Valley

231E Mid Coastal Plains, Western

231F Eastern Gulf Prairies and Marshes

231G Arkansas Valley

232 Outer Coastal Plain Mixed Forest 232A Middle Atlantic Coastal Plain

232B Coastal Plains and Flatwoods, Lower

232C Atlantic Coastal Flatlands

232D Florida Coastal Lowlands (Western)

232E Louisiana Coast Prairies and Marshes

232F Coastal Plains and Flatwoods, Western Gulf

232G Florida Coastal Lowlands (Eastern)

234 Lower Mississippi Riverine Forest 234A Mississippi Alluvial Basin

M231 Ouachita Mixed Forest—Meadow M231A Ouachita Mountains

240 Marine 242 Pacific Lowland Mixed Forest 242A Willamette Valley and Puget Trough

M242 Cascade Mixed Forest—Coniferous M242A Oregon and Washington Coast Ranges

M242B Western Cascades

M242C Eastern Cascades

250 Prairie 251 Prairie Parkland (Temperate) 251A Red River Valley

251B North-Central Glaciated Plains

251C Central Dissected Till Plains

251D Central Till Plains

251E Osage Plains

251F Flint Hills

251G Central Loess Plains

255 Prairie Parkland (Subtropical) 255A Cross Timbers and Prairie

255B Blackland Prairies

255C Oak Woods and Prairies

255D Central Gulf Prairies and Marshes

260 Mediterranean 261 California Coastal Chapparal Forest

and Shrub 261A Central California Coast

261B Southern California Coast

262 California Dry Steppe 262A Great Valley

263 California Coastal Steppe, Mixed Forest,

and Redwood Forest 263A Northern California Coast
93

Table 2—Codes for ecological sections of the coterminous United States by domain, division, province, and section

(continued)

Division Province Section

Code Name Code Name Code Name

260 Mediterranean

 (cont.) M261 Sierran Steppe—Mixed Forest Coniferous

 Forest—Alpine Meadow M261A Klamath Mountains

M261B Northern California Coast Ranges

M261C Northern California Interior Coast Ranges

M261D Southern Cascades

M261E Sierra Nevada

M261F Sierra Nevada Foothills

M261G Modoc Plateau

M262 California Coastal Range Open

 Woodland—Shrub—Coniferous

 Forest—Meadow M262A Central California Coast Ranges

M262B Southern California Mountains and Valleys

Dry Domain

310 Tropical/Subtropical 311 Great Plains Steppe and Shrub 311A Redbed Plains

 Steppe

313 Colorado Plateau Semi-Desert 313A Grand Canyon

313B Navajo Canyonlands

313C Tonto Transition

313D Painted Desert

313E Central Rio Grande Intermontane

315 Southwest Plateau and Plains Dry Steppe

and Shrub 315A Pecos Valley

315B Texas High Plains

315C Rolling Plains

315D Edwards Plateau

315E Rio Grande Plain

315F Southern Gulf Prairies and Marshes

M313 Arizona—New Mexico Mountains SemiDesert—Open Woodland—Coniferous

 Forest—Alpine Meadow M313A White Mountain—San Francisco

Peaks—Mogollon Rim

M313B Sacramento—Manzano Mountain

320 Tropical/Subtropical 321 Chihuahuan Semi-Desert 321A Basin and Range

 Desert 321B Stockton Plateau

322 American Semi-Desert and Desert 322A Mojave Desert

322B Sonoran Desert

322C Colorado Desert

330 Temperate Steppe 331 Great Plains—Palouse Dry Steppe 331A Palouse Prairie

331B Southern High Plains

331C Central High Tablelands

331D Northwestern Glaciated Plains

331E Northern Glaciated Plains

331F Northwestern Great Plains

331G Powder River Basin

331H Central High Plains

331I Arkansas Tablelands

331J Northern Rio Grande Basin
94

Table 2—Codes for ecological sections of the coterminous United States by domain, division, province, and section

(continued)

Division Province Section

Code Name Code Name Code Name

330 Temperate Steppe

 (cont.) 332 Great Plains Steppe 32A Northeastern Glaciated Plains

332B Western Glaciated Plains

332C Nebraska Sand Hills

332D North-Central Great Plains

332E South-Central Great Plains

M331 Southern Rocky Mountains Steppe—

Open Woodland—Coniferous Forest

Alpine Meadow M331A Yellowstone Highlands

M331B Bighorn Mountainsa

M331D Overthrust Mountains

M331E Uinta Mountains

M331F Southern Parks and Rocky Mountain

Ranges

M331G South-Central Highlands

M331H North-Central Highlands and Rocky

Mountain

M331I Northern Parks and Ranges

M331J Wind River Mountaina

M332 Middle Rocky Mountains Steppe—

 Coniferous Forest—Alpine Meadow M332A Idaho Batholith

M332B Bitterroot Valley

M332C Rocky Mountain Fronta

M332D Belt Mountains

M332E Beaverhead Mountains

M332F Challis Volcanics

M332G Blue Mountains

M333 Northern Rocky Mountains Forest—

 Steppe—Open Woodland—

 Coniferous Forest—

 Alpine Meadow M333A Okanogan Highlands

M333B Flathead Valley

M333C Northern Rockies

M333D Bitterroot Mountains

M334 Black Hills Coniferous Forest M334A Black Hills

340 Temperate Desert 341 Intermountain Semi-Desert

 and Desert 341A Bonneville Basin

341B Northern Canyon Lands

341C Uinta Basin

341D Mono

341E Lahontan Basin

341F Southeastern Great Basin

341G Northeastern Great Basin

342 Intermountain Semi-Desert 342A Bighorn Basin

342B Northwestern Basin and Range

342C Owyhee Uplands

342D Snake River Basalts

342E Bear Lake

342F Central Basin and Hills

342G Green River Basin

342H High Lava Plains

342I Columbia Basin
95

Table 2—Codes for ecological sections of the coterminous United States by domain, division, province, and section

(continued)

Division Province Section

Code Name Code Name Code Name

340 Temperate Desert

 (cont.) M341 Nevada—Utah Mountains Semi-Desert

—Coniferous Forest—Alpine Meadow M341A Central Great Basin Mountains

M341B Tavaputs Plateau

M341C Utah High Plateaus and Mountains

Humid Tropical Domain

410 Savanna 411 Everglades 411A Everglades

a Provinces and sections that were not predominant in any county.
96

Rudis, Victor A. 1999. Ecological subregion codes by county, coterminous United

States. Gen. Tech. Rep. SRS-36. Asheville, NC: U.S. Department of Agriculture,

Forest Service, Southern Research Station. 95 p.

This publication presents the National Hierarchical Framework of Ecological Units

(ECOMAP 1993) by county for the coterminous United States. Assignment of the

framework to individual counties is based on the predominant area by province and

section to facilitate integration of county-referenced information with areas of uniform

ecological potential. Included are maps illustrating county-scaled ecological subregion

boundaries by division, province, and section; and numeric codes by Federal Information

Processing Standard and USDA Forest Service Resources Planning Act region.

Keywords: County, ecological potential, ecological subregion, ecoregion, forest

resources, province.
97

The Forest Service, U.S. Department of

Agriculture, is dedicated to the principle of

multiple use management of the Nation’s forest

resources for sustained yields of wood, water, forage, wildlife, and

recreation. Through forestry research, cooperation with the States and

private forest owners, and management of the National Forests and

National Grasslands, it strives—as directed by Congress—to provide

increasingly greater service to a growing Nation.

The U.S. Department of Agriculture (USDA) prohibits discrimination in

all its programs and activities on the basis of race, color, national origin,

sex, religion, age, disability, political beliefs, sexual orientation, or

marital or family status. (Not all prohibited bases apply to all programs.)

Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should

contact USDA's TARGET Center at 202-720-2600 (voice and TDD).

To file a complaint of discrimination, write USDA, Director, Office of

Civil Rights, Room 326-W, Whitten Building, 1400 Independence

Avenue, SW, Washington, DC 20250-9410 or call 202-720-5964 (voice

or TDD). USDA is an equal opportunity provider and employer.
98

UNITED STATES DEPARTMENT OF AGRICULTURE

FOREST SERVICE

SOUTHERN RESEARCH STATION

GENERAL TECHNICAL REPORT SRS-36

DECEMBER 1999