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Map of the 27 core-based statistical areas in Wisconsin.
An enlargeable map of the 27 core-based statistical areas in Wisconsin.[1]

The U.S. State of Wisconsin currently has 36 statistical areas that have been delineated by the Office of Management and Budget (OMB). On March 6, 2020, the OMB delineated nine combined statistical areas, 15 metropolitan statistical areas, and 12 micropolitan statistical areas in Wisconsin.[1]

Statistical areas

The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico.[2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.

The OMB defines a core-based statistical area (commonly referred to as a CBSA) as "a statistical geographic entity consisting of the county or counties (or county-equivalents) associated with at least one core[a] of at least 10,000 population, plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core."[2] The OMB further divides core-based statistical areas into metropolitan statistical areas (MSAs) that have "a population of at least 50,000" and micropolitan statistical areas (μSAs) that have "a population of at least 10,000, but less than 50,000."[2]

The OMB defines a combined statistical area (CSA) as "a geographic entity consisting of two or more adjacent core-based statistical areas with employment interchange measures[b] of at least 15%."[2] The primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area.


The table below describes the 36 United States statistical areas and 72 counties of the State of Wisconsin with the following information:[3]

  1. The combined statistical area (CSA) as designated by the OMB.[1]
  2. The CSA population according to 2019 US Census Bureau population estimates.[4]
  3. The core based statistical area (CBSA)[2] as designated by the OMB.[1]
  4. The CBSA population according to 2019 US Census Bureau population estimates [4]
  5. The county name
  6. The county population according to 2019 US Census Bureau population estimates [4]
  7. The Metropolitan Division name, if applicable[1]
  8. The Metropolitan Division population according to 2019 US Census Bureau population estimates [4]
The 36 United States statistical areas and 72 counties of the State of Wisconsin

Combined Statistical Area 2019 Population Core Based Statistical Area 2019 Population County 2019 Population Metropolitan Division 2019 Population
Milwaukee-Racine-Waukesha, WI CSA 2,047,966 Milwaukee-Waukesha, WI MSA 1,575,179 Milwaukee County, Wisconsin 945,726 none
Waukesha County, Wisconsin 404,198
Washington County, Wisconsin 136,034
Ozaukee County, Wisconsin 89,221
Racine, WI MSA 196,311 Racine County, Wisconsin 196,311
Whitewater, WI μSA 103,868 Walworth County, Wisconsin 103,868
Beaver Dam, WI μSA 87,839 Dodge County, Wisconsin 88,839
Watertown-Fort Atkinson, WI μSA 84,769 Jefferson County, Wisconsin 84,769
Madison-Janesville-Beloit, WI CSA 892,661 Madison, WI MSA 664,865 Dane County, Wisconsin 546,695
Columbia County, Wisconsin 57,532
Green County, Wisconsin 36,960
Iowa County, Wisconsin 23,678
Janesville-Beloit, WI MSA 163,354 Rock County, Wisconsin 163,354
Baraboo, WI μSA 64,442 Sauk County, Wisconsin 64,442
Appleton-Oshkosh-Neenah, WI CSA 409,881 Appleton, Wisconsin metropolitan area 237,974 Outagamie County, Wisconsin 187,885
Calumet County, Wisconsin 50,089
Oshkosh-Neenah, WI MSA 171,907 Winnebago County, Wisconsin 171,907
Green Bay-Shawano, WI CSA 368,361 Green Bay, WI MSA 322,906 Brown County, Wisconsin 264,542
Oconto County, Wisconsin 37,930
Kewaunee County, Wisconsin 20,434
Shawano, WI μSA 45,455 Shawano County, Wisconsin 40,899
Menominee County, Wisconsin 4,556
Wausau-Stevens Point-Wisconsin Rapids, WI CSA 307,056 Wausau-Weston, WI MSA 163,285 Marathon County, Wisconsin 135,692
Lincoln County, Wisconsin 27,593
Wisconsin Rapids-Marshfield, WI μSA 72,999 Wood County, Wisconsin 72,999
Stevens Point, WI μSA 70,772 Portage County, Wisconsin 70,772
Eau Claire-Menomonie, WI CSA 214,672 Eau Claire, WI MSA 169,304 Eau Claire County, Wisconsin 104,646
Chippewa County, Wisconsin 64,658
Menomonie, WI μSA 45,368 Dunn County, Wisconsin 45,368
Chicago-Naperville, IL-IN-WI CSA 9,825,325
Chicago-Naperville-Joliet, IL-IN-WI MSA 9,458,539
Cook County, Illinois 5,150,233 Chicago-Naperville-Evanston, IL MD 7,122,725
DuPage County, Illinois 922,921
Will County, Illinois 690,743
McHenry County, Illinois 307,774
Grundy County, Illinois 51,054
Lake County, Illinois 696,535 Lake County-Kenosha County, IL-WI MD 866,096
Kenosha County, Wisconsin 169,561
Kane County, Illinois 532,403 Elgin, IL MD 766,290
Kendall County, Illinois 128,990
DeKalb County, Illinois 104,897
Lake County, Indiana 485,493 Gary, IN MD 703,428
Porter County, Indiana 170,389
Jasper County, Indiana 33,562
Newton County, Indiana 13,984
Ottawa, IL μSA 147,036 LaSalle County, Illinois 108,669 none
Bureau County, Illinois 32,628
Putnam County, Illinois 5,739
Michigan City-La Porte, IN MSA 109,888 LaPorte County, Indiana 109,888
Kankakee, IL MSA 109,862 Kankakee County, Illinois 109,862
Minneapolis-St. Paul, MN-WI CSA 4,027,861
Minneapolis-St. Paul-Bloomington, MN-WI MSA 3,640,043
Hennepin County, Minnesota 1,265,843
Ramsey County, Minnesota 550,321
Dakota County, Minnesota 429,021
Anoka County, Minnesota 356,921
Washington County, Minnesota 262,440
Scott County, Minnesota 149,013
Wright County, Minnesota 138,377
Carver County, Minnesota 105,089
Sherburne County, Minnesota 97,238
St. Croix County, Wisconsin 90,687
Chisago County, Minnesota 56,579
Pierce County, Wisconsin 42,754
Isanti County, Minnesota 40,596
Le Sueur County, Minnesota 28,887
Mille Lacs County, Minnesota 26,277
St. Cloud, MN MSA 201,964 Stearns County, Minnesota 161,075
Benton County, Minnesota 40,889
Faribault-Northfield, MN μSA 66,972 Rice County, Minnesota 66,972
Red Wing, MN μSA 46,340 Goodhue County, Minnesota 46,340
Owatonna, MN μSA 36,649 Steele County, Minnesota 36,649
Hutchinson, MN μSA 35,893 McLeod County, Minnesota 35,893
none La Crosse, WI-MN MSA 136,616
La Crosse County, Wisconsin 118,016
Houston County, Minnesota 18,600
Sheboygan, WI MSA 115,340 Sheboygan County, Wisconsin 115,340
Fond du Lac, WI MSA 103,403 Fond du Lac County, Wisconsin 103,403
Manitowoc, WI μSA 78,981 Manitowoc County, Wisconsin 78,981
Platteville, WI μSA 51,439 Grant County, Wisconsin 51,439
Marinette-Iron Mountain, WI-MI CSA 92,664
Marinette, WI-MI μSA 63,130
Marinette County, Wisconsin 40,350
Menominee County, Michigan 22,780
Iron Mountain, MI-WI μSA 29,534
Dickinson County, Michigan 25,239
Florence County, Wisconsin 4,295
none Duluth, MN-WI MSA 288,732
St. Louis County, Minnesota 199,070
Douglas County, Wisconsin 43,150
Carlton County, Minnesota 35,871
Lake County, Minnesota 10,641
none Waupaca County, Wisconsin 50,990
Monroe County, Wisconsin 46,253
Barron County, Wisconsin 45,244
Polk County, Wisconsin 43,783
Oneida County, Wisconsin 35,595
Clark County, Wisconsin 34,774
Vernon County, Wisconsin 30,822
Trempealeau County, Wisconsin 29,649
Door County, Wisconsin 27,668
Juneau County, Wisconsin 26,687
Waushara County, Wisconsin 24,443
Vilas County, Wisconsin 22,195
Jackson County, Wisconsin 20,643
Taylor County, Wisconsin 20,343
Adams County, Wisconsin 20,220
Langlade County, Wisconsin 19,189
Green Lake County, Wisconsin 18,913
Richland County, Wisconsin 17,252
Lafayette County, Wisconsin 16,665
Sawyer County, Wisconsin 16,558
Crawford County, Wisconsin 16,131
Washburn County, Wisconsin 15,720
Marquette County, Wisconsin 15,574
Ashland County, Wisconsin 15,562
Burnett County, Wisconsin 15,414
Bayfield County, Wisconsin 15,036
Rusk County, Wisconsin 14,178
Price County, Wisconsin 13,351
Buffalo County, Wisconsin 13,031
Forest County, Wisconsin 9,004
Pepin County, Wisconsin 7,287
Iron County, Wisconsin 5,687
State of Wisconsin 5,822,434

See also


  1. ^ The OMB defines a core as "a densely settled concentration of population, comprising an Urban Area (of 10,000 or more population) delineated by the Census Bureau, around which a core-based statistical area is delineated."[2]
  2. ^ The OMB defines the employment interchange measure as "the sum of the percentage of workers living in the smaller entity who work in the larger entity plus the percentage of employment in the smaller entity that is accounted for by workers who reside in the larger entity."[2]


  1. ^ a b c d e Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas (March 6, 2020). "0MB BULLETIN NO. 20-01" (PDF). Office of Management and Budget. Retrieved December 15, 2021.{{cite web}}: CS1 maint: multiple names: authors list (link)
  2. ^ a b c d e f g "2020 Standards for Delineating Core Based Statistical Areas". Office of Management and Budget. July 16, 2021. Retrieved December 15, 2021.
  3. ^ An out-of-state area and its population are displayed in green. An area that extends into more than one state is displayed in teal. A teal population number over a black population number show the total population versus the in-state population.
  4. ^ a b c d "Annual Estimates of the Resident Population for Counties in the United States: April 1, 2010 to July 1, 2019". United States Census Bureau, Population Division. April 2020. Retrieved April 9, 2020.

External links

Coordinates: 44°37′27″N 89°59′39″W / 44.6243°N 89.9941°W / 44.6243; -89.9941 (State of Wisconsin)

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