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Demographic Data Report for Iowa by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2017-2021 American Community Survey 5-Year Data
Sorted by Count
County
 sort alphabetically by name ascending
Value (Percent)
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People (Age Under 18)
 sort by sample size descending
Rank within US
(of 3143 counties)
 sort by rank ascending
Iowa 23.3 742,175 15 of 52
United States 22.5 74,234,075 N/A
Adams County 21.5 794 1,921
Ringgold County 24.2 1,149 724
Audubon County 22.3 1,259 1,571
Taylor County 23.4 1,388 1,077
Osceola County 23.7 1,462 951
Fremont County 22.8 1,528 1,338
Worth County 20.7 1,542 2,176
Pocahontas County 22.6 1,604 1,428
Adair County 22.4 1,663 1,522
Van Buren County 23.2 1,671 1,158
Decatur County 21.8 1,684 1,771
Wayne County 25.9 1,684 351
Ida County 24.8 1,733 563
Monroe County 24.4 1,853 678
Emmet County 20.5 1,935 2,239
Monona County 22.3 1,950 1,536
Lucas County 22.7 1,964 1,386
Greene County 22.6 1,997 1,432
Palo Alto County 23.7 2,131 958
Sac County 22.3 2,193 1,544
Calhoun County 22.4 2,236 1,481
Humboldt County 24.0 2,308 817
Keokuk County 23.1 2,322 1,203
Guthrie County 22.2 2,356 1,586
Franklin County 23.5 2,359 1,045
Hancock County 21.8 2,367 1,757
Winnebago County 22.2 2,382 1,610
Howard County 25.6 2,418 411
Louisa County 22.6 2,466 1,419
Montgomery County 24.4 2,515 693
Mitchell County 24.1 2,537 779
Clarke County 26.2 2,546 317
Shelby County 22.0 2,586 1,672
Cherokee County 22.7 2,629 1,415
Davis County 29.7 2,691 101
Union County 22.6 2,761 1,418
Appanoose County 22.9 2,816 1,305
Chickasaw County 23.9 2,872 868
Grundy County 23.5 2,903 1,013
Cass County 22.8 2,998 1,344
Page County 19.9 3,041 2,427
Jefferson County 20.2 3,206 2,331
Wright County 24.8 3,221 567
Kossuth County 22.2 3,297 1,577
Butler County 23.0 3,323 1,231
Allamakee County 23.8 3,351 903
Hardin County 19.9 3,378 2,445
Lyon County 28.4 3,392 142
O'Brien County 24.1 3,405 786
Dickinson County 19.5 3,423 2,531
Harrison County 23.5 3,423 1,040
Mills County 23.6 3,457 995
Hamilton County 23.0 3,464 1,257
Floyd County 22.9 3,591 1,286
Clayton County 21.7 3,731 1,807
Poweshiek County 20.0 3,733 2,390
Winneshiek County 18.6 3,740 2,734
Clay County 23.4 3,847 1,054
Iowa County 23.2 3,851 1,163
Cedar County 22.1 4,092 1,625
Tama County 24.3 4,154 706
Madison County 25.5 4,179 431
Fayette County 21.4 4,183 1,961
Crawford County 25.4 4,210 438
Delaware County 24.0 4,210 796
Jackson County 22.2 4,324 1,608
Henry County 21.6 4,433 1,857
Jones County 21.8 4,498 1,801
Carroll County 24.0 4,981 811
Mahaska County 24.0 5,316 802
Buchanan County 26.4 5,430 290
Buena Vista County 26.2 5,430 309
Washington County 24.9 5,616 535
Bremer County 22.9 5,701 1,277
Boone County 21.6 5,780 1,859
Benton County 23.5 6,016 1,051
Plymouth County 25.2 6,441 480
Lee County 21.6 7,301 1,850
Marion County 23.5 7,829 1,048
Webster County 21.5 7,967 1,928
Wapello County 23.3 8,221 1,144
Jasper County 22.4 8,442 1,501
Des Moines County 22.8 8,908 1,337
Cerro Gordo County 21.0 9,086 2,072
Sioux County 27.4 9,759 197
Marshall County 25.6 10,257 414
Clinton County 22.8 10,645 1,318
Muscatine County 24.9 10,737 550
Warren County 24.8 12,858 570
Story County 16.6 16,316 2,982
Pottawattamie County 23.7 22,184 949
Dubuque County 22.9 22,618 1,283
Dallas County 27.5 26,545 184
Woodbury County 26.2 27,491 316
Black Hawk County 22.0 28,843 1,705
Johnson County 20.0 30,374 2,405
Scott County 23.9 41,552 882
Linn County 23.3 53,295 1,113
Polk County 24.9 121,827 538
Notes:
Created by statecancerprofiles.cancer.gov on 04/26/2024 1:22 am.
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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