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Demographic Data Report for Iowa by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2015-2019 American Community Survey 5-Year Data
Sorted by Rank
County
 sort alphabetically by name ascending
Value (Percent)
 sort by value descending
People (Age 18-39)
 sort by sample size descending
Rank within US
(of 3146 counties)
 sort by rank descending
Iowa 29.0 911,848 20 of 52
United States 29.8 96,748,047 N/A
Pocahontas County 20.7 1,405 240
Van Buren County 21.0 1,500 270
Sac County 21.1 2,065 278
Fremont County 21.2 1,471 290
Guthrie County 21.6 2,302 344
Montgomery County 21.6 2,175 353
Cass County 21.7 2,837 361
Butler County 21.7 3,180 373
Ringgold County 21.9 1,085 400
Clayton County 22.0 3,874 425
Audubon County 22.0 1,225 429
Delaware County 22.1 3,794 451
Shelby County 22.1 2,566 461
Chickasaw County 22.1 2,661 465
Wayne County 22.2 1,425 474
Greene County 22.2 1,986 479
Lucas County 22.2 1,907 485
Mitchell County 22.3 2,365 504
Allamakee County 22.4 3,092 529
Monroe County 22.4 1,750 537
Adams County 22.6 831 573
Harrison County 22.7 3,196 585
Ida County 22.7 1,567 588
Cherokee County 22.7 2,576 589
O'Brien County 22.8 3,148 605
Osceola County 22.8 1,380 625
Dickinson County 22.9 3,914 634
Tama County 22.9 3,905 657
Appanoose County 22.9 2,855 658
Carroll County 23.0 4,660 674
Keokuk County 23.0 2,341 675
Cedar County 23.0 4,252 691
Howard County 23.1 2,128 699
Kossuth County 23.1 3,467 719
Hancock County 23.2 2,504 731
Adair County 23.2 1,643 733
Wright County 23.2 2,961 746
Monona County 23.3 2,030 748
Grundy County 23.5 2,885 809
Hamilton County 23.5 3,523 821
Mills County 23.6 3,543 838
Jackson County 23.7 4,594 871
Floyd County 23.7 3,743 876
Benton County 23.7 6,083 882
Franklin County 23.8 2,414 891
Clay County 23.8 3,864 922
Hardin County 24.0 4,096 964
Buchanan County 24.1 5,097 1,003
Humboldt County 24.1 2,306 1,004
Des Moines County 24.2 9,519 1,012
Iowa County 24.2 3,920 1,033
Lyon County 24.3 2,857 1,051
Taylor County 24.3 1,501 1,074
Calhoun County 24.4 2,377 1,096
Worth County 24.4 1,817 1,102
Madison County 24.4 3,913 1,113
Clinton County 24.5 11,487 1,128
Washington County 24.7 5,464 1,206
Davis County 24.7 2,207 1,217
Lee County 24.8 8,473 1,223
Cerro Gordo County 24.9 10,663 1,267
Palo Alto County 24.9 2,246 1,285
Plymouth County 25.0 6,269 1,311
Jones County 25.0 5,148 1,325
Clarke County 25.1 2,346 1,332
Louisa County 25.2 2,819 1,389
Jasper County 25.4 9,398 1,452
Fayette County 25.6 5,072 1,508
Page County 25.8 3,940 1,567
Emmet County 25.9 2,446 1,606
Boone County 25.9 6,836 1,608
Marshall County 26.2 10,474 1,717
Winnebago County 26.3 2,773 1,757
Mahaska County 26.7 5,909 1,858
Crawford County 26.7 4,550 1,872
Pottawattamie County 26.9 25,087 1,919
Union County 27.3 3,372 2,032
Warren County 27.4 13,740 2,078
Marion County 27.5 9,131 2,098
Muscatine County 27.6 11,834 2,120
Bremer County 27.9 6,937 2,195
Wapello County 27.9 9,820 2,208
Dubuque County 28.4 27,529 2,306
Scott County 28.5 49,096 2,327
Henry County 28.5 5,691 2,348
Jefferson County 29.2 5,301 2,481
Woodbury County 29.3 30,080 2,497
Poweshiek County 29.6 5,444 2,547
Linn County 29.6 66,374 2,553
Winneshiek County 29.7 6,021 2,564
Webster County 29.8 10,898 2,584
Buena Vista County 30.5 6,108 2,675
Dallas County 30.5 26,582 2,684
Sioux County 31.2 10,867 2,753
Polk County 31.4 150,626 2,775
Decatur County 32.1 2,561 2,828
Black Hawk County 34.5 45,635 2,953
Johnson County 43.2 64,192 3,106
Story County 49.9 48,327 3,136
Notes:
Created by statecancerprofiles.cancer.gov on 12/07/2021 1:19 pm.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 18-39, 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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