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Demographic Data Report for Iowa by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2015-2019 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 3146 counties)
 sort by rank ascending
Iowa 23.2 728,737 18 of 52
United States 22.6 73,429,392 N/A
Adams County 20.9 767 2,124
Audubon County 20.6 1,146 2,224
Ringgold County 24.1 1,198 754
Osceola County 23.4 1,416 1,052
Taylor County 23.3 1,435 1,110
Pocahontas County 21.6 1,465 1,870
Fremont County 21.8 1,512 1,766
Adair County 21.4 1,519 1,922
Worth County 21.0 1,561 2,097
Wayne County 25.2 1,618 479
Ida County 23.5 1,619 1,032
Van Buren County 23.3 1,669 1,071
Decatur County 21.7 1,735 1,775
Monona County 20.5 1,786 2,274
Monroe County 23.6 1,840 994
Emmet County 20.8 1,959 2,166
Lucas County 23.2 1,988 1,158
Greene County 22.8 2,042 1,312
Calhoun County 21.2 2,063 2,032
Palo Alto County 23.7 2,130 963
Sac County 22.3 2,188 1,530
Humboldt County 23.3 2,227 1,090
Winnebago County 21.7 2,286 1,796
Clarke County 24.6 2,301 625
Montgomery County 22.9 2,301 1,279
Keokuk County 22.8 2,322 1,329
Howard County 25.4 2,339 448
Franklin County 23.1 2,343 1,193
Hancock County 22.1 2,388 1,635
Guthrie County 22.8 2,431 1,335
Cherokee County 21.5 2,437 1,905
Mitchell County 23.4 2,484 1,046
Louisa County 22.6 2,528 1,409
Shelby County 22.3 2,587 1,545
Davis County 29.4 2,621 106
Appanoose County 21.9 2,733 1,699
Chickasaw County 22.9 2,752 1,281
Union County 22.5 2,775 1,472
Grundy County 23.1 2,835 1,205
Jefferson County 15.8 2,867 3,051
Cass County 22.2 2,906 1,595
Page County 19.9 3,045 2,424
Wright County 24.0 3,057 797
Allamakee County 23.1 3,194 1,173
Dickinson County 18.9 3,236 2,697
Harrison County 23.0 3,238 1,237
O'Brien County 23.7 3,279 942
Kossuth County 22.0 3,293 1,683
Lyon County 28.3 3,330 140
Butler County 23.3 3,408 1,097
Hamilton County 22.9 3,433 1,278
Floyd County 22.6 3,562 1,432
Hardin County 21.0 3,582 2,090
Poweshiek County 19.6 3,596 2,522
Mills County 23.9 3,597 823
Clay County 22.6 3,661 1,419
Iowa County 23.0 3,720 1,240
Winneshiek County 18.5 3,750 2,763
Clayton County 21.3 3,758 1,977
Madison County 24.8 3,963 581
Tama County 24.0 4,096 785
Delaware County 24.0 4,120 805
Fayette County 21.0 4,149 2,099
Crawford County 24.8 4,228 560
Cedar County 23.1 4,255 1,200
Jackson County 22.2 4,312 1,578
Henry County 21.9 4,360 1,733
Jones County 21.4 4,391 1,966
Carroll County 24.5 4,968 646
Buena Vista County 25.9 5,194 354
Mahaska County 24.0 5,316 803
Washington County 24.7 5,466 587
Bremer County 22.3 5,538 1,561
Buchanan County 26.7 5,649 247
Boone County 21.7 5,724 1,792
Benton County 23.6 6,052 979
Plymouth County 25.0 6,258 528
Lee County 21.8 7,448 1,767
Marion County 23.3 7,744 1,068
Webster County 21.3 7,768 1,999
Wapello County 22.7 7,987 1,350
Jasper County 22.4 8,275 1,503
Cerro Gordo County 20.6 8,813 2,222
Des Moines County 22.7 8,929 1,383
Sioux County 27.1 9,432 211
Marshall County 25.2 10,064 477
Clinton County 22.8 10,689 1,334
Muscatine County 24.9 10,700 534
Warren County 24.8 12,423 564
Story County 16.6 16,104 2,990
Pottawattamie County 23.5 21,991 1,003
Dubuque County 22.9 22,203 1,275
Dallas County 27.9 24,336 150
Woodbury County 26.2 26,845 320
Black Hawk County 21.7 28,685 1,816
Johnson County 20.1 29,819 2,397
Scott County 23.9 41,147 851
Linn County 23.5 52,610 1,023
Polk County 25.0 119,828 520
Notes:
Created by statecancerprofiles.cancer.gov on 08/12/2022 9:08 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.
Health Service Areas are a single county or cluster of contiguous counties which are relatively self-contained with respect to hospital care. For more detailed information, please see Health Service Area information page. Puerto Rico is being treated as a Health Service Area for this data presentation.
Data for United States does not include Puerto Rico.

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