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Demographic Data Report for Iowa by County
Population: Age 40-64
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 40-64)
 sort by sample size ascending
Rank within US
(of 3143 counties)
 sort by rank descending
United States 31.8 104,982,464 N/A
Iowa 30.7 977,517 13 of 52
Polk County 30.8 150,658 825
Linn County 31.4 71,878 1,065
Scott County 31.9 55,636 1,299
Johnson County 25.6 38,938 80
Black Hawk County 27.8 36,473 228
Woodbury County 29.9 31,421 568
Dubuque County 30.4 30,044 723
Pottawattamie County 31.9 29,805 1,244
Dallas County 30.3 29,271 678
Story County 22.0 21,613 22
Warren County 32.3 16,767 1,481
Clinton County 33.3 15,510 1,981
Cerro Gordo County 33.0 14,234 1,788
Muscatine County 31.1 13,408 927
Des Moines County 32.2 12,597 1,444
Jasper County 32.5 12,235 1,542
Marshall County 30.3 12,168 682
Lee County 33.5 11,287 2,086
Webster County 30.2 11,190 635
Wapello County 31.6 11,177 1,131
Marion County 31.7 10,577 1,160
Sioux County 27.5 9,798 203
Boone County 34.4 9,193 2,548
Benton County 35.2 9,025 2,811
Plymouth County 31.9 8,146 1,269
Bremer County 29.4 7,302 450
Washington County 31.4 7,071 1,042
Jones County 33.5 6,938 2,140
Mahaska County 30.6 6,769 755
Carroll County 32.3 6,713 1,486
Henry County 32.2 6,594 1,423
Jackson County 33.2 6,469 1,913
Buchanan County 31.2 6,429 975
Fayette County 31.9 6,251 1,290
Cedar County 33.6 6,210 2,161
Winneshiek County 30.4 6,118 722
Delaware County 34.9 6,115 2,732
Buena Vista County 29.3 6,076 439
Iowa County 35.0 5,810 2,756
Dickinson County 32.9 5,774 1,768
Poweshiek County 30.5 5,689 744
Clayton County 33.1 5,685 1,875
Hardin County 33.4 5,676 2,042
Madison County 33.6 5,513 2,168
Tama County 31.9 5,451 1,285
Clay County 30.6 5,020 760
Page County 32.6 4,977 1,625
Floyd County 31.7 4,971 1,174
Mills County 33.8 4,957 2,284
Hamilton County 32.5 4,895 1,546
Harrison County 33.3 4,860 1,997
Crawford County 29.2 4,829 410
Jefferson County 30.3 4,795 663
Butler County 32.1 4,632 1,382
Kossuth County 30.8 4,565 817
Allamakee County 31.5 4,436 1,096
Cass County 33.5 4,408 2,111
O'Brien County 30.6 4,332 771
Grundy County 32.6 4,020 1,594
Chickasaw County 32.9 3,956 1,756
Wright County 30.4 3,943 702
Cherokee County 33.3 3,865 1,987
Appanoose County 31.2 3,838 959
Shelby County 31.8 3,731 1,192
Louisa County 34.0 3,701 2,355
Guthrie County 34.5 3,658 2,592
Union County 29.4 3,583 458
Hancock County 32.7 3,539 1,634
Lyon County 29.4 3,510 448
Mitchell County 32.2 3,385 1,403
Franklin County 33.3 3,346 1,970
Winnebago County 30.2 3,245 648
Keokuk County 32.2 3,238 1,435
Sac County 32.8 3,227 1,717
Montgomery County 31.1 3,213 938
Humboldt County 31.6 3,044 1,136
Calhoun County 30.3 3,022 690
Emmet County 30.8 2,904 813
Clarke County 29.4 2,867 469
Howard County 30.1 2,845 619
Greene County 32.1 2,832 1,361
Lucas County 32.6 2,822 1,616
Palo Alto County 30.8 2,768 806
Monona County 31.2 2,728 988
Davis County 27.9 2,531 239
Worth County 33.8 2,515 2,253
Monroe County 32.1 2,437 1,380
Van Buren County 33.2 2,387 1,909
Adair County 31.4 2,337 1,051
Pocahontas County 32.3 2,292 1,477
Fremont County 34.2 2,289 2,438
Ida County 30.3 2,112 665
Osceola County 33.1 2,039 1,844
Decatur County 25.8 1,990 90
Wayne County 30.6 1,987 747
Taylor County 31.8 1,887 1,221
Audubon County 32.4 1,832 1,510
Ringgold County 30.3 1,438 692
Adams County 33.4 1,235 2,052
Notes:
Created by statecancerprofiles.cancer.gov on 04/19/2024 7:15 pm.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 40-64, see the dictionary.
Data for United States does not include Puerto Rico.

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