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Demographic Data Report for Iowa by County
Population: Age 40-64
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Name

County
 sort alphabetically by name descending
2023 Rural-Urban Continuum Codes Φ
 sort by rural urban descending
Value (Percent)
 sort by value ascending
People (Age 40-64)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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Iowa N/A 30.4 970,005 40 of 52
United States N/A 31.5 104,713,862 N/A
Adair County Rural 30.6 2,286 2,236
Adams County Rural 32.9 1,198 1,052
Allamakee County Rural 30.9 4,338 2,099
Appanoose County Rural 31.1 3,812 2,018
Audubon County Rural 32.1 1,805 1,508
Benton County Urban 34.0 8,739 508
Black Hawk County Urban 27.2 35,497 2,945
Boone County Urban 32.9 8,787 1,052
Bremer County Urban 28.6 7,186 2,758
Buchanan County Rural 31.5 6,512 1,831
Buena Vista County Rural 27.9 5,781 2,856
Butler County Rural 31.9 4,563 1,620
Calhoun County Rural 29.5 2,912 2,575
Carroll County Rural 31.8 6,565 1,660
Cass County Rural 31.6 4,148 1,768
Cedar County Rural 33.4 6,147 781
Cerro Gordo County Rural 31.7 13,543 1,713
Cherokee County Rural 33.0 3,824 999
Chickasaw County Rural 32.3 3,831 1,399
Clarke County Rural 28.5 2,761 2,782
Clay County Rural 30.3 4,983 2,341
Clayton County Rural 32.6 5,567 1,200
Clinton County Rural 32.9 15,263 1,052
Crawford County Rural 30.6 4,986 2,236
Dallas County Urban 30.3 31,560 2,341
Davis County Rural 28.8 2,625 2,723
Decatur County Rural 25.7 1,972 3,044
Delaware County Rural 33.3 5,850 829
Des Moines County Rural 31.7 12,241 1,713
Dickinson County Rural 32.0 5,716 1,560
Dubuque County Urban 29.4 29,109 2,603
Emmet County Rural 30.2 2,818 2,378
Fayette County Rural 31.3 6,076 1,932
Floyd County Rural 31.8 4,927 1,660
Franklin County Rural 31.3 3,125 1,932
Fremont County Rural 34.0 2,233 508
Greene County Rural 31.0 2,703 2,056
Grundy County Urban 31.1 3,839 2,018
Guthrie County Urban 34.1 3,632 474
Hamilton County Rural 31.7 4,725 1,713
Hancock County Rural 32.0 3,432 1,560
Hardin County Rural 33.2 5,552 889
Harrison County Urban 32.4 4,744 1,331
Henry County Rural 31.2 6,308 1,974
Howard County Rural 28.5 2,699 2,782
Humboldt County Rural 30.9 2,954 2,099
Ida County Rural 30.2 2,094 2,378
Iowa County Rural 33.4 5,534 781
Jackson County Rural 33.1 6,425 943
Jasper County Urban 32.3 12,236 1,399
Jefferson County Rural 28.7 4,495 2,742
Johnson County Urban 25.5 39,462 3,059
Jones County Urban 34.0 7,072 508
Keokuk County Rural 31.4 3,129 1,882
Kossuth County Rural 29.6 4,321 2,547
Lee County Rural 33.0 10,962 999
Linn County Urban 31.4 71,969 1,882
Louisa County Rural 33.2 3,556 889
Lucas County Rural 32.7 2,843 1,158
Lyon County Rural 28.2 3,411 2,822
Madison County Urban 33.3 5,585 829
Mahaska County Rural 30.0 6,619 2,437
Marion County Rural 30.8 10,336 2,137
Marshall County Rural 30.0 11,982 2,437
Mills County Urban 33.6 4,889 686
Mitchell County Rural 31.0 3,274 2,056
Monona County Rural 31.0 2,669 2,056
Monroe County Rural 31.9 2,405 1,620
Montgomery County Rural 31.7 3,252 1,713
Muscatine County Rural 31.2 13,324 1,974
O'Brien County Rural 28.6 4,027 2,758
Osceola County Rural 32.0 1,959 1,560
Page County Rural 31.9 4,838 1,620
Palo Alto County Rural 30.7 2,737 2,187
Plymouth County Rural 31.6 8,127 1,768
Pocahontas County Rural 30.8 2,168 2,137
Polk County Urban 30.6 151,970 2,236
Pottawattamie County Urban 31.8 29,748 1,660
Poweshiek County Rural 30.1 5,595 2,408
Ringgold County Rural 31.2 1,453 1,974
Sac County Rural 31.4 3,067 1,882
Scott County Urban 31.5 54,990 1,831
Shelby County Rural 31.6 3,716 1,768
Sioux County Rural 27.6 9,932 2,892
Story County Urban 22.0 21,675 3,119
Tama County Rural 31.1 5,286 2,018
Taylor County Rural 31.5 1,859 1,831
Union County Rural 30.3 3,648 2,341
Van Buren County Rural 33.3 2,411 829
Wapello County Rural 31.8 11,230 1,660
Warren County Urban 31.7 16,931 1,713
Washington County Urban 30.5 6,884 2,275
Wayne County Rural 29.8 1,945 2,486
Webster County Rural 30.0 11,070 2,437
Winnebago County Rural 30.1 3,204 2,408
Winneshiek County Rural 30.3 6,060 2,341
Woodbury County Urban 30.0 31,760 2,437
Worth County Rural 33.3 2,461 829
Wright County Rural 27.6 3,536 2,892
Notes:
Created by statecancerprofiles.cancer.gov on 07/13/2025 7:34 am.

Φ Rural-Urban Continuum Codes provided by the USDA.

Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 40-64, see the dictionary.

Data for United States does not include Puerto Rico.

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