Return to Home Demographics > Table

Demographics Table

Data Options

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 Value
County
 sort alphabetically by name ascending
Value (Percent)
 sort by value ascending
People (Age Under 18)
 sort by sample size ascending
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
Davis County 29.4 2,621 106
Lyon County 28.3 3,330 140
Dallas County 27.9 24,336 150
Sioux County 27.1 9,432 211
Buchanan County 26.7 5,649 247
Woodbury County 26.2 26,845 320
Buena Vista County 25.9 5,194 354
Howard County 25.4 2,339 448
Marshall County 25.2 10,064 477
Wayne County 25.2 1,618 479
Polk County 25.0 119,828 520
Plymouth County 25.0 6,258 528
Muscatine County 24.9 10,700 534
Crawford County 24.8 4,228 560
Warren County 24.8 12,423 564
Madison County 24.8 3,963 581
Washington County 24.7 5,466 587
Clarke County 24.6 2,301 625
Carroll County 24.5 4,968 646
Ringgold County 24.1 1,198 754
Tama County 24.0 4,096 785
Wright County 24.0 3,057 797
Mahaska County 24.0 5,316 803
Delaware County 24.0 4,120 805
Mills County 23.9 3,597 823
Scott County 23.9 41,147 851
O'Brien County 23.7 3,279 942
Palo Alto County 23.7 2,130 963
Benton County 23.6 6,052 979
Monroe County 23.6 1,840 994
Pottawattamie County 23.5 21,991 1,003
Linn County 23.5 52,610 1,023
Ida County 23.5 1,619 1,032
Mitchell County 23.4 2,484 1,046
Osceola County 23.4 1,416 1,052
Marion County 23.3 7,744 1,068
Van Buren County 23.3 1,669 1,071
Humboldt County 23.3 2,227 1,090
Butler County 23.3 3,408 1,097
Taylor County 23.3 1,435 1,110
Lucas County 23.2 1,988 1,158
Allamakee County 23.1 3,194 1,173
Franklin County 23.1 2,343 1,193
Cedar County 23.1 4,255 1,200
Grundy County 23.1 2,835 1,205
Harrison County 23.0 3,238 1,237
Iowa County 23.0 3,720 1,240
Dubuque County 22.9 22,203 1,275
Hamilton County 22.9 3,433 1,278
Montgomery County 22.9 2,301 1,279
Chickasaw County 22.9 2,752 1,281
Greene County 22.8 2,042 1,312
Keokuk County 22.8 2,322 1,329
Clinton County 22.8 10,689 1,334
Guthrie County 22.8 2,431 1,335
Wapello County 22.7 7,987 1,350
Des Moines County 22.7 8,929 1,383
Louisa County 22.6 2,528 1,409
Clay County 22.6 3,661 1,419
Floyd County 22.6 3,562 1,432
Union County 22.5 2,775 1,472
Jasper County 22.4 8,275 1,503
Sac County 22.3 2,188 1,530
Shelby County 22.3 2,587 1,545
Bremer County 22.3 5,538 1,561
Jackson County 22.2 4,312 1,578
Cass County 22.2 2,906 1,595
Hancock County 22.1 2,388 1,635
Kossuth County 22.0 3,293 1,683
Appanoose County 21.9 2,733 1,699
Henry County 21.9 4,360 1,733
Fremont County 21.8 1,512 1,766
Lee County 21.8 7,448 1,767
Decatur County 21.7 1,735 1,775
Boone County 21.7 5,724 1,792
Winnebago County 21.7 2,286 1,796
Black Hawk County 21.7 28,685 1,816
Pocahontas County 21.6 1,465 1,870
Cherokee County 21.5 2,437 1,905
Adair County 21.4 1,519 1,922
Jones County 21.4 4,391 1,966
Clayton County 21.3 3,758 1,977
Webster County 21.3 7,768 1,999
Calhoun County 21.2 2,063 2,032
Hardin County 21.0 3,582 2,090
Worth County 21.0 1,561 2,097
Fayette County 21.0 4,149 2,099
Adams County 20.9 767 2,124
Emmet County 20.8 1,959 2,166
Cerro Gordo County 20.6 8,813 2,222
Audubon County 20.6 1,146 2,224
Monona County 20.5 1,786 2,274
Johnson County 20.1 29,819 2,397
Page County 19.9 3,045 2,424
Poweshiek County 19.6 3,596 2,522
Dickinson County 18.9 3,236 2,697
Winneshiek County 18.5 3,750 2,763
Story County 16.6 16,104 2,990
Jefferson County 15.8 2,867 3,051
Notes:
Created by statecancerprofiles.cancer.gov on 10/20/2021 4:02 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.

Return to Top