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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
2014-2018 American Community Survey 5-Year Data
Sorted by Value
County
 sort alphabetically by name ascending
Value (Percent)
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People (Age Under 18)
 sort by sample size ascending
Rank within US
(of 3141 counties)
 sort by rank ascending
United States 22.8 73,553,240 N/A
Iowa 23.3 730,032 18 of 52
Story County 16.7 16,217 2,993
Jefferson County 18.3 3,311 2,825
Winneshiek County 18.4 3,758 2,813
Dickinson County 18.9 3,217 2,733
Audubon County 19.5 1,097 2,583
Poweshiek County 19.5 3,626 2,580
Page County 20.1 3,088 2,420
Johnson County 20.1 29,611 2,408
Monona County 20.4 1,790 2,341
Cerro Gordo County 20.6 8,871 2,251
Calhoun County 20.7 2,021 2,241
Adams County 20.9 778 2,160
Emmet County 20.9 1,997 2,151
Fayette County 20.9 4,175 2,133
Hardin County 21.3 3,648 2,014
Webster County 21.4 7,849 2,000
Cherokee County 21.4 2,453 1,986
Worth County 21.5 1,608 1,956
Clayton County 21.6 3,813 1,923
Jones County 21.6 4,443 1,910
Lee County 21.6 7,477 1,886
Adair County 21.7 1,543 1,883
Kossuth County 21.7 3,267 1,875
Pocahontas County 21.7 1,496 1,866
Black Hawk County 21.7 28,858 1,860
Winnebago County 21.7 2,297 1,842
Decatur County 21.8 1,756 1,793
Cass County 22.0 2,901 1,711
Boone County 22.0 5,806 1,710
Appanoose County 22.0 2,752 1,708
Fremont County 22.0 1,533 1,706
Henry County 22.0 4,392 1,691
Bremer County 22.1 5,479 1,670
Sac County 22.1 2,183 1,663
Hancock County 22.2 2,420 1,611
Jackson County 22.3 4,324 1,581
Palo Alto County 22.4 2,031 1,530
Wapello County 22.5 7,942 1,509
Union County 22.5 2,801 1,506
Jasper County 22.5 8,306 1,494
Shelby County 22.6 2,644 1,450
Clay County 22.6 3,693 1,435
Keokuk County 22.7 2,312 1,426
Floyd County 22.7 3,596 1,424
Guthrie County 22.7 2,423 1,411
Des Moines County 22.8 9,012 1,388
Clinton County 22.8 10,774 1,367
Cedar County 22.8 4,212 1,355
Allamakee County 22.9 3,175 1,333
Harrison County 22.9 3,242 1,302
Louisa County 22.9 2,575 1,286
Butler County 22.9 3,381 1,285
Hamilton County 23.0 3,471 1,277
Greene County 23.0 2,074 1,249
Dubuque County 23.0 22,312 1,243
Chickasaw County 23.1 2,798 1,216
Iowa County 23.2 3,755 1,198
Humboldt County 23.2 2,222 1,177
Franklin County 23.3 2,384 1,155
Montgomery County 23.3 2,364 1,152
Ida County 23.3 1,614 1,133
Taylor County 23.4 1,448 1,129
Grundy County 23.4 2,886 1,105
Lucas County 23.5 2,023 1,040
Osceola County 23.5 1,440 1,035
O'Brien County 23.6 3,277 1,031
Linn County 23.6 52,493 1,006
Benton County 23.7 6,066 994
Mitchell County 23.7 2,517 993
Pottawattamie County 23.7 22,149 988
Mills County 23.8 3,563 922
Delaware County 23.8 4,116 906
Marion County 23.9 7,932 886
Ringgold County 23.9 1,193 864
Scott County 24.0 41,267 860
Wright County 24.0 3,067 859
Mahaska County 24.0 5,324 850
Van Buren County 24.0 1,733 842
Tama County 24.2 4,150 750
Carroll County 24.4 4,963 697
Crawford County 24.8 4,254 577
Washington County 24.9 5,516 555
Warren County 25.0 12,319 543
Wayne County 25.0 1,601 541
Howard County 25.1 2,321 526
Monroe County 25.1 1,970 525
Marshall County 25.1 10,111 514
Polk County 25.1 119,097 513
Muscatine County 25.1 10,788 511
Clarke County 25.1 2,334 504
Plymouth County 25.2 6,304 497
Buena Vista County 25.4 5,147 455
Madison County 25.6 4,064 419
Woodbury County 26.2 26,854 330
Buchanan County 27.0 5,696 240
Sioux County 27.1 9,448 228
Dallas County 28.2 23,693 144
Lyon County 28.4 3,339 138
Davis County 29.3 2,601 109
Notes:
Created by statecancerprofiles.cancer.gov on 04/20/2021 10:03 pm.
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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