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Demographics Table

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Demographic Data Report for Iowa by County
Population: Age 40 and over
All Races (includes Hispanic), Both Sexes
2015-2019 American Community Survey 5-Year Data
Sorted by Value
County
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Value (Percent)
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People (Age 40 And Over)
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Rank within US
(of 3146 counties)
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Iowa 47.7 1,498,923 27 of 52
United States 47.6 154,520,356 N/A
Dickinson County 58.3 9,977 378
Pocahontas County 57.8 3,927 428
Audubon County 57.4 3,200 467
Fremont County 57.1 3,963 506
Clayton County 56.7 9,993 534
Sac County 56.6 5,549 544
Adams County 56.5 2,072 567
Monona County 56.3 4,914 587
Cass County 56.1 7,348 610
Cherokee County 55.8 6,330 658
Van Buren County 55.7 3,981 676
Guthrie County 55.6 5,936 679
Shelby County 55.6 6,453 685
Montgomery County 55.5 5,577 707
Adair County 55.4 3,923 723
Appanoose County 55.1 6,864 777
Hardin County 55.0 9,383 793
Greene County 55.0 4,922 794
Jefferson County 55.0 9,980 795
Chickasaw County 55.0 6,613 797
Butler County 55.0 8,040 802
Kossuth County 54.9 8,218 819
Hancock County 54.7 5,910 848
Worth County 54.6 4,067 857
Lucas County 54.6 4,688 861
Cerro Gordo County 54.5 23,358 871
Allamakee County 54.5 7,527 879
Calhoun County 54.4 5,304 894
Harrison County 54.3 7,655 915
Mitchell County 54.3 5,759 924
Page County 54.3 8,283 933
Keokuk County 54.2 5,525 938
Jackson County 54.1 10,495 967
Monroe County 54.0 4,217 987
Ringgold County 54.0 2,681 989
Delaware County 53.9 9,269 1,000
Cedar County 53.9 9,950 1,010
Ida County 53.8 3,715 1,023
Osceola County 53.8 3,256 1,030
Floyd County 53.7 8,481 1,050
Hamilton County 53.6 8,041 1,067
Jones County 53.6 11,020 1,075
Clay County 53.6 8,686 1,084
O'Brien County 53.5 7,408 1,089
Grundy County 53.5 6,579 1,109
Lee County 53.5 18,306 1,112
Fayette County 53.4 10,582 1,119
Emmet County 53.3 5,033 1,140
Franklin County 53.2 5,405 1,179
Des Moines County 53.2 20,938 1,190
Tama County 53.0 9,031 1,217
Iowa County 52.8 8,549 1,266
Wright County 52.8 6,721 1,274
Clinton County 52.7 24,733 1,285
Wayne County 52.7 3,386 1,306
Benton County 52.7 13,501 1,309
Humboldt County 52.6 5,021 1,334
Carroll County 52.5 10,653 1,342
Mills County 52.5 7,894 1,347
Taylor County 52.4 3,231 1,378
Boone County 52.4 13,810 1,384
Jasper County 52.2 19,298 1,415
Louisa County 52.2 5,831 1,420
Winnebago County 52.0 5,475 1,467
Winneshiek County 51.8 10,491 1,512
Howard County 51.6 4,759 1,566
Palo Alto County 51.4 4,627 1,614
Poweshiek County 50.8 9,348 1,761
Madison County 50.8 8,136 1,774
Washington County 50.5 11,170 1,830
Clarke County 50.4 4,713 1,879
Union County 50.3 6,211 1,903
Plymouth County 50.0 12,541 1,945
Bremer County 49.8 12,389 1,983
Henry County 49.6 9,890 2,030
Pottawattamie County 49.6 46,315 2,031
Mahaska County 49.4 10,939 2,069
Wapello County 49.3 17,334 2,078
Marion County 49.1 16,297 2,121
Buchanan County 49.1 10,372 2,125
Webster County 48.9 17,879 2,163
Dubuque County 48.7 47,250 2,209
Marshall County 48.6 19,426 2,226
Crawford County 48.5 8,256 2,246
Warren County 47.8 23,913 2,354
Scott County 47.7 82,203 2,371
Lyon County 47.5 5,589 2,404
Muscatine County 47.5 20,355 2,405
Linn County 46.8 104,877 2,493
Decatur County 46.2 3,683 2,568
Davis County 45.9 4,092 2,596
Woodbury County 44.5 45,661 2,738
Black Hawk County 43.9 58,073 2,793
Buena Vista County 43.7 8,756 2,808
Polk County 43.6 209,158 2,811
Sioux County 41.7 14,528 2,925
Dallas County 41.5 36,181 2,937
Johnson County 36.7 54,566 3,086
Story County 33.5 32,510 3,123
Notes:
Created by statecancerprofiles.cancer.gov on 09/26/2022 5:06 am.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 40 and over, 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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