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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 Value
County
 sort alphabetically by name ascending
Value (Percent)
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People (Age 18-39)
 sort by sample size descending
Rank within US
(of 3146 counties)
 sort by rank descending
United States 29.8 96,748,047 N/A
Iowa 29.0 911,848 20 of 52
Story County 49.9 48,327 3,136
Johnson County 43.2 64,192 3,106
Black Hawk County 34.5 45,635 2,953
Decatur County 32.1 2,561 2,828
Polk County 31.4 150,626 2,775
Sioux County 31.2 10,867 2,753
Dallas County 30.5 26,582 2,684
Buena Vista County 30.5 6,108 2,675
Webster County 29.8 10,898 2,584
Winneshiek County 29.7 6,021 2,564
Linn County 29.6 66,374 2,553
Poweshiek County 29.6 5,444 2,547
Woodbury County 29.3 30,080 2,497
Jefferson County 29.2 5,301 2,481
Henry County 28.5 5,691 2,348
Scott County 28.5 49,096 2,327
Dubuque County 28.4 27,529 2,306
Wapello County 27.9 9,820 2,208
Bremer County 27.9 6,937 2,195
Muscatine County 27.6 11,834 2,120
Marion County 27.5 9,131 2,098
Warren County 27.4 13,740 2,078
Union County 27.3 3,372 2,032
Pottawattamie County 26.9 25,087 1,919
Crawford County 26.7 4,550 1,872
Mahaska County 26.7 5,909 1,858
Winnebago County 26.3 2,773 1,757
Marshall County 26.2 10,474 1,717
Boone County 25.9 6,836 1,608
Emmet County 25.9 2,446 1,606
Page County 25.8 3,940 1,567
Fayette County 25.6 5,072 1,508
Jasper County 25.4 9,398 1,452
Louisa County 25.2 2,819 1,389
Clarke County 25.1 2,346 1,332
Jones County 25.0 5,148 1,325
Plymouth County 25.0 6,269 1,311
Palo Alto County 24.9 2,246 1,285
Cerro Gordo County 24.9 10,663 1,267
Lee County 24.8 8,473 1,223
Davis County 24.7 2,207 1,217
Washington County 24.7 5,464 1,206
Clinton County 24.5 11,487 1,128
Madison County 24.4 3,913 1,113
Worth County 24.4 1,817 1,102
Calhoun County 24.4 2,377 1,096
Taylor County 24.3 1,501 1,074
Lyon County 24.3 2,857 1,051
Iowa County 24.2 3,920 1,033
Des Moines County 24.2 9,519 1,012
Humboldt County 24.1 2,306 1,004
Buchanan County 24.1 5,097 1,003
Hardin County 24.0 4,096 964
Clay County 23.8 3,864 922
Franklin County 23.8 2,414 891
Benton County 23.7 6,083 882
Floyd County 23.7 3,743 876
Jackson County 23.7 4,594 871
Mills County 23.6 3,543 838
Hamilton County 23.5 3,523 821
Grundy County 23.5 2,885 809
Monona County 23.3 2,030 748
Wright County 23.2 2,961 746
Adair County 23.2 1,643 733
Hancock County 23.2 2,504 731
Kossuth County 23.1 3,467 719
Howard County 23.1 2,128 699
Cedar County 23.0 4,252 691
Keokuk County 23.0 2,341 675
Carroll County 23.0 4,660 674
Appanoose County 22.9 2,855 658
Tama County 22.9 3,905 657
Dickinson County 22.9 3,914 634
Osceola County 22.8 1,380 625
O'Brien County 22.8 3,148 605
Cherokee County 22.7 2,576 589
Ida County 22.7 1,567 588
Harrison County 22.7 3,196 585
Adams County 22.6 831 573
Monroe County 22.4 1,750 537
Allamakee County 22.4 3,092 529
Mitchell County 22.3 2,365 504
Lucas County 22.2 1,907 485
Greene County 22.2 1,986 479
Wayne County 22.2 1,425 474
Chickasaw County 22.1 2,661 465
Shelby County 22.1 2,566 461
Delaware County 22.1 3,794 451
Audubon County 22.0 1,225 429
Clayton County 22.0 3,874 425
Ringgold County 21.9 1,085 400
Butler County 21.7 3,180 373
Cass County 21.7 2,837 361
Montgomery County 21.6 2,175 353
Guthrie County 21.6 2,302 344
Fremont County 21.2 1,471 290
Sac County 21.1 2,065 278
Van Buren County 21.0 1,500 270
Pocahontas County 20.7 1,405 240
Notes:
Created by statecancerprofiles.cancer.gov on 09/27/2021 12:19 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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