Iowa statistical areas
An enlargeable map of the 24 core-based statistical areas in Iowa .[ 1]
The U.S. State of Iowa currently has 30 statistical areas that have been delineated by the Office of Management and Budget (OMB). On March 6, 2020, the OMB delineated six combined statistical areas , nine metropolitan statistical areas , and 15 micropolitan statistical areas in Iowa.[ 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.
Table
The table below describes the 30 United States statistical areas and 99 counties of the State of Iowa with the following information:[ 3]
The combined statistical area (CSA) as designated by the OMB.[ 1]
The CSA population according to 2019 US Census Bureau population estimates.[ 4]
The core based statistical area (CBSA)[ 2] as designated by the OMB.[ 1]
The CBSA population according to 2019 US Census Bureau population estimates [ 4]
The county name
The county population according to 2019 US Census Bureau population estimates [ 4]
The 30 United States statistical areas and 99 counties of the State of Iowa
Combined Statistical Area
2019 Population
Core Based Statistical Area
2019 Population
County
2019 Population
Des Moines-Ames-West Des Moines, IA CSA
877,991
Des Moines-West Des Moines, IA MSA
699,292
Polk County, Iowa
490,161
Dallas County, Iowa
93,453
Warren County, Iowa
51,466
Jasper County, Iowa
37,185
Madison County, Iowa
16,338
Guthrie County, Iowa
10,689
Ames, IA MSA
123,351
Story County, Iowa
97,117
Boone County, Iowa
26,234
Pella, IA μSA
33,253
Marion County, Iowa
33,253
Oskaloosa, IA μSA
22,095
Mahaska County, Iowa
22,095
Cedar Rapids-Iowa City, IA CSA
446,137
Cedar Rapids, IA MSA
273,032
Linn County, Iowa
226,706
Benton County, Iowa
25,645
Jones County, Iowa
20,681
Iowa City, IA MSA
173,105
Johnson County, Iowa
151,140
Washington County, Iowa
21,965
Davenport-Moline, IA-IL CSA
468,265 262,036
Davenport-Moline-Rock Island, IA-IL MSA
379,172 172,943
Scott County, Iowa
172,943
Rock Island County, Illinois
141,879
Henry County, Illinois
48,913
Mercer County, Illinois
15,437
Clinton, IA μSA
46,429
Clinton County, Iowa
46,429
Muscatine, IA μSA
42,664
Muscatine County, Iowa
42,664
none
Waterloo-Cedar Falls, IA MSA
168,522
Black Hawk County, Iowa
131,228
Bremer County, Iowa
25,062
Grundy County, Iowa
12,232
Omaha-Council Bluffs-Fremont, NE-IA CSA
986,007 122,364
Omaha-Council Bluffs, NE-IA MSA
949,442 122,364
Douglas County, Nebraska
571,327
Sarpy County, Nebraska
187,196
Pottawattamie County, Iowa
93,206
Cass County, Nebraska
26,248
Saunders County, Nebraska
21,578
Washington County, Nebraska
20,729
Mills County, Iowa
15,109
Harrison County, Iowa
14,049
Fremont, NE μSA
36,565
Dodge County, Nebraska
36,565
none
Sioux City, IA-NE-SD MSA
144,701 103,107
Woodbury County, Iowa
103,107
Dakota County, Nebraska
20,026
Union County, South Dakota
15,932
Dixon County, Nebraska
5,636
Dubuque, IA MSA
97,311
Dubuque County, Iowa
97,311
Burlington-Fort Madison-Keokuk, IA-IL-MO CSA
103,775 72,624
Fort Madison-Keokuk, IA-IL-MO μSA
58,162 33,657
Lee County, Iowa
33,657
Hancock County, Illinois
17,708
Clark County, Missouri
6,797
Burlington, IA-IL μSA
45,613 38,967
Des Moines County, Iowa
38,967
Henderson County, Illinois
6,646
none
Mason City, IA μSA
49,831
Cerro Gordo County, Iowa
42,450
Worth County, Iowa
7,381
Marshalltown, IA μSA
39,369
Marshall County, Iowa
39,369
Fort Dodge, IA μSA
35,904
Webster County, Iowa
35,904
Ottumwa, IA μSA
34,969
Wapello County, Iowa
34,969
Spencer-Spirit Lake, IA CSA
33,274
Spirit Lake, IA μSA
17,258
Dickinson County, Iowa
17,258
Spencer, IA μSA
16,016
Clay County, Iowa
16,016
none
Carroll, IA μSA
20,165
Carroll County, Iowa
20,165
Storm Lake, IA μSA
19,620
Buena Vista County, Iowa
19,620
Fairfield, IA μSA
18,295
Jefferson County, Iowa
18,295
none
Sioux County, Iowa
34,855
Plymouth County, Iowa
25,177
Buchanan County, Iowa
21,175
Winneshiek County, Iowa
19,991
Henry County, Iowa
19,954
Fayette County, Iowa
19,650
Jackson County, Iowa
19,439
Cedar County, Iowa
18,627
Poweshiek County, Iowa
18,504
Clayton County, Iowa
17,549
Delaware County, Iowa
17,011
Tama County, Iowa
16,854
Hardin County, Iowa
16,846
Crawford County, Iowa
16,820
Iowa County, Iowa
16,184
Floyd County, Iowa
15,642
Page County, Iowa
15,107
Kossuth County, Iowa
14,813
Hamilton County, Iowa
14,773
Butler County, Iowa
14,439
O'Brien County, Iowa
13,753
Allamakee County, Iowa
13,687
Cass County, Iowa
12,836
Wright County, Iowa
12,562
Appanoose County, Iowa
12,426
Union County, Iowa
12,241
Chickasaw County, Iowa
11,933
Lyon County, Iowa
11,755
Shelby County, Iowa
11,454
Cherokee County, Iowa
11,235
Louisa County, Iowa
11,035
Hancock County, Iowa
10,630
Mitchell County, Iowa
10,586
Winnebago County, Iowa
10,354
Keokuk County, Iowa
10,246
Franklin County, Iowa
10,070
Montgomery County, Iowa
9,917
Sac County, Iowa
9,721
Calhoun County, Iowa
9,668
Humboldt County, Iowa
9,558
Clarke County, Iowa
9,395
Emmet County, Iowa
9,208
Howard County, Iowa
9,158
Davis County, Iowa
9,000
Greene County, Iowa
8,888
Palo Alto County, Iowa
8,886
Monona County, Iowa
8,615
Lucas County, Iowa
8,600
Decatur County, Iowa
7,870
Monroe County, Iowa
7,707
Adair County, Iowa
7,152
Van Buren County, Iowa
7,044
Fremont County, Iowa
6,960
Ida County, Iowa
6,860
Pocahontas County, Iowa
6,619
Wayne County, Iowa
6,441
Taylor County, Iowa
6,121
Osceola County, Iowa
5,958
Audubon County, Iowa
5,496
Ringgold County, Iowa
4,894
Adams County, Iowa
3,602
State of Iowa
3,155,070
See also
Notes
^ 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]
^ 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]
References
^ a b c d 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 13, 2021 . {{cite web }}
: CS1 maint: multiple names: authors list (link )
^ a b c d e f g The United States Office of Management and Budget (OMB) defines a core based statistical area as one or more adjacent counties or county-equivalents having at least one urban cluster of at least 10,000 population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties. The core based statistical areas comprise the metropolitan statistical areas and the micropolitan statistical areas .
^ 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.
^ a b c "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
42°04′30″N 93°29′46″W / 42.0751°N 93.4960°W / 42.0751; -93.4960 (State of Iowa )