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Demographics Table

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Demographic Data Report for Iowa by County
Population: Age under 18
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 Under 18)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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Iowa N/A 23.0 736,579 16 of 52
United States N/A 22.2 73,645,238 N/A
Adair County Rural 23.0 1,715 1,127
Adams County Rural 21.9 796 1,606
Allamakee County Rural 24.1 3,386 687
Appanoose County Rural 21.4 2,621 1,821
Audubon County Rural 22.2 1,249 1,469
Benton County Urban 23.1 5,941 1,087
Black Hawk County Urban 21.9 28,679 1,606
Boone County Urban 20.9 5,581 2,008
Bremer County Urban 22.6 5,677 1,288
Buchanan County Rural 25.7 5,308 324
Buena Vista County Rural 26.7 5,521 215
Butler County Rural 22.5 3,215 1,340
Calhoun County Rural 21.8 2,152 1,646
Carroll County Rural 24.1 4,986 687
Cass County Rural 23.6 3,090 866
Cedar County Rural 21.5 3,953 1,784
Cerro Gordo County Rural 21.0 8,964 1,977
Cherokee County Rural 21.8 2,522 1,646
Chickasaw County Rural 23.3 2,769 1,001
Clarke County Rural 25.5 2,474 355
Clay County Rural 23.1 3,803 1,087
Clayton County Rural 21.7 3,708 1,683
Clinton County Rural 22.7 10,532 1,250
Crawford County Rural 25.3 4,121 398
Dallas County Urban 26.8 27,939 209
Davis County Rural 29.9 2,730 79
Decatur County Rural 22.6 1,730 1,288
Delaware County Rural 23.4 4,115 947
Des Moines County Rural 21.9 8,444 1,606
Dickinson County Rural 19.2 3,433 2,514
Dubuque County Urban 22.7 22,431 1,250
Emmet County Rural 19.5 1,817 2,445
Fayette County Rural 21.4 4,145 1,821
Floyd County Rural 22.6 3,508 1,288
Franklin County Rural 24.4 2,439 594
Fremont County Rural 21.9 1,441 1,606
Greene County Rural 21.1 1,844 1,936
Grundy County Urban 23.6 2,917 866
Guthrie County Urban 21.4 2,279 1,821
Hamilton County Rural 23.4 3,486 947
Hancock County Rural 21.3 2,281 1,876
Hardin County Rural 19.2 3,217 2,514
Harrison County Urban 23.1 3,377 1,087
Henry County Rural 21.0 4,254 1,977
Howard County Rural 25.6 2,419 338
Humboldt County Rural 23.7 2,266 823
Ida County Rural 24.5 1,698 572
Iowa County Rural 23.5 3,888 900
Jackson County Rural 22.2 4,313 1,469
Jasper County Urban 22.1 8,382 1,518
Jefferson County Rural 17.1 2,684 2,892
Johnson County Urban 19.5 30,276 2,445
Jones County Urban 20.9 4,344 2,008
Keokuk County Rural 22.7 2,262 1,250
Kossuth County Rural 22.3 3,251 1,429
Lee County Rural 21.3 7,075 1,876
Linn County Urban 22.8 52,233 1,209
Louisa County Rural 22.4 2,402 1,385
Lucas County Rural 23.0 1,998 1,127
Lyon County Rural 28.6 3,451 117
Madison County Urban 24.9 4,175 492
Mahaska County Rural 23.9 5,262 750
Marion County Rural 23.4 7,845 947
Marshall County Rural 25.3 10,127 398
Mills County Urban 23.1 3,362 1,087
Mitchell County Rural 24.0 2,534 718
Monona County Rural 22.4 1,932 1,385
Monroe County Rural 23.1 1,745 1,087
Montgomery County Rural 22.6 2,320 1,288
Muscatine County Rural 24.2 10,344 647
O'Brien County Rural 24.4 3,438 594
Osceola County Rural 23.5 1,436 900
Page County Rural 19.2 2,908 2,514
Palo Alto County Rural 23.4 2,087 947
Plymouth County Rural 24.9 6,411 492
Pocahontas County Rural 23.0 1,622 1,127
Polk County Urban 24.6 122,384 545
Pottawattamie County Urban 23.2 21,645 1,042
Poweshiek County Rural 19.5 3,619 2,445
Ringgold County Rural 23.2 1,081 1,042
Sac County Rural 22.3 2,172 1,429
Scott County Urban 23.4 40,786 947
Shelby County Rural 22.8 2,686 1,209
Sioux County Rural 27.4 9,874 173
Story County Urban 16.4 16,200 2,956
Tama County Rural 24.0 4,079 718
Taylor County Rural 23.5 1,386 900
Union County Rural 23.7 2,858 823
Van Buren County Rural 23.2 1,681 1,042
Wapello County Rural 23.7 8,349 823
Warren County Urban 24.6 13,172 545
Washington County Urban 24.6 5,553 545
Wayne County Rural 26.3 1,714 251
Webster County Rural 21.4 7,872 1,821
Winnebago County Rural 21.7 2,315 1,683
Winneshiek County Rural 19.0 3,790 2,557
Woodbury County Urban 25.9 27,420 299
Worth County Rural 20.6 1,520 2,123
Wright County Rural 26.1 3,343 270
Notes:
Created by statecancerprofiles.cancer.gov on 04/23/2025 11:52 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 under 18, see the dictionary.

Data for United States does not include Puerto Rico.

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