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Demographic Data Report for Iowa by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2017-2021 American Community Survey 5-Year Data
Sorted by Count
County
 sort alphabetically by name ascending
Value (Percent)
 sort by value descending
People (Age 18-39)
 sort by sample size ascending
Rank within US
(of 3143 counties)
 sort by rank descending
United States 29.6 97,620,321 N/A
Iowa 28.9 918,856 20 of 52
Polk County 31.2 152,650 2,770
Linn County 29.3 67,030 2,513
Johnson County 42.4 64,319 3,101
Scott County 28.0 48,729 2,248
Story County 49.1 48,147 3,133
Black Hawk County 33.8 44,370 2,937
Woodbury County 28.9 30,394 2,436
Dallas County 30.5 29,426 2,689
Dubuque County 28.9 28,501 2,428
Pottawattamie County 27.0 25,221 1,968
Warren County 27.2 14,120 2,056
Muscatine County 27.6 11,912 2,155
Clinton County 24.4 11,364 1,070
Webster County 29.7 11,027 2,570
Cerro Gordo County 24.6 10,633 1,164
Sioux County 29.7 10,594 2,573
Marshall County 26.2 10,530 1,723
Jasper County 26.5 9,970 1,809
Wapello County 27.4 9,680 2,104
Des Moines County 24.3 9,498 1,045
Marion County 27.1 9,036 2,005
Lee County 24.5 8,267 1,122
Bremer County 28.5 7,080 2,346
Boone County 25.7 6,876 1,553
Plymouth County 24.3 6,213 1,052
Buena Vista County 29.4 6,099 2,534
Mahaska County 27.5 6,078 2,130
Winneshiek County 29.8 5,995 2,599
Benton County 23.2 5,950 710
Henry County 27.6 5,655 2,151
Washington County 24.8 5,589 1,236
Poweshiek County 29.1 5,414 2,470
Buchanan County 24.7 5,084 1,181
Fayette County 25.7 5,041 1,557
Jones County 24.1 4,984 985
Carroll County 23.7 4,921 870
Crawford County 28.6 4,729 2,363
Jackson County 23.8 4,642 902
Cedar County 25.0 4,621 1,308
Jefferson County 26.9 4,262 1,948
Hardin County 24.8 4,209 1,217
Clay County 25.2 4,129 1,365
Tama County 24.1 4,114 981
Madison County 23.8 3,901 887
Iowa County 23.1 3,827 675
Page County 24.9 3,804 1,286
Dickinson County 21.7 3,797 375
Delaware County 21.5 3,764 343
Clayton County 21.8 3,744 403
Floyd County 23.5 3,680 802
Hamilton County 23.8 3,588 901
O'Brien County 25.0 3,533 1,309
Harrison County 24.1 3,522 993
Mills County 23.8 3,488 898
Kossuth County 23.4 3,464 763
Union County 27.9 3,400 2,225
Butler County 22.6 3,257 556
Allamakee County 22.2 3,121 472
Wright County 22.5 2,916 524
Grundy County 23.4 2,890 789
Appanoose County 23.4 2,885 793
Lyon County 24.1 2,877 969
Winnebago County 26.6 2,855 1,847
Shelby County 23.8 2,792 885
Cass County 21.2 2,788 306
Chickasaw County 22.7 2,729 584
Louisa County 24.6 2,683 1,168
Clarke County 26.2 2,546 1,695
Hancock County 23.2 2,518 723
Decatur County 32.3 2,496 2,859
Emmet County 26.4 2,493 1,800
Calhoun County 24.6 2,446 1,138
Mitchell County 23.2 2,437 702
Montgomery County 23.1 2,386 684
Cherokee County 20.5 2,384 217
Keokuk County 23.0 2,315 668
Humboldt County 23.9 2,296 914
Davis County 25.2 2,281 1,364
Howard County 24.0 2,271 951
Franklin County 22.2 2,232 475
Guthrie County 20.8 2,208 256
Palo Alto County 24.1 2,164 960
Sac County 21.6 2,123 363
Lucas County 23.4 2,024 778
Greene County 22.7 2,006 590
Monona County 22.0 1,920 436
Worth County 24.6 1,834 1,160
Adair County 24.6 1,829 1,148
Monroe County 24.0 1,823 954
Ida County 23.7 1,654 868
Pocahontas County 22.5 1,596 536
Van Buren County 21.1 1,515 288
Wayne County 22.5 1,461 523
Fremont County 21.1 1,411 288
Osceola County 22.0 1,356 434
Taylor County 22.9 1,356 622
Audubon County 21.0 1,187 280
Ringgold County 22.0 1,042 435
Adams County 22.7 838 580
Notes:
Created by statecancerprofiles.cancer.gov on 04/19/2024 3:11 am.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 18-39, see the dictionary.
Data for United States does not include Puerto Rico.

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