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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
 sort alphabetically by name ascending
Value (Percent)
 sort by value descending
People (Age 40 And Over)
 sort by sample size ascending
Rank within US
(of 3146 counties)
 sort by rank ascending
United States 47.6 154,520,356 N/A
Iowa 47.7 1,498,923 27 of 52
Story County 33.5 32,510 3,123
Johnson County 36.7 54,566 3,086
Dallas County 41.5 36,181 2,937
Sioux County 41.7 14,528 2,925
Polk County 43.6 209,158 2,811
Buena Vista County 43.7 8,756 2,808
Black Hawk County 43.9 58,073 2,793
Woodbury County 44.5 45,661 2,738
Davis County 45.9 4,092 2,596
Decatur County 46.2 3,683 2,568
Linn County 46.8 104,877 2,493
Muscatine County 47.5 20,355 2,405
Lyon County 47.5 5,589 2,404
Scott County 47.7 82,203 2,371
Warren County 47.8 23,913 2,354
Crawford County 48.5 8,256 2,246
Marshall County 48.6 19,426 2,226
Dubuque County 48.7 47,250 2,209
Webster County 48.9 17,879 2,163
Buchanan County 49.1 10,372 2,125
Marion County 49.1 16,297 2,121
Wapello County 49.3 17,334 2,078
Mahaska County 49.4 10,939 2,069
Pottawattamie County 49.6 46,315 2,031
Henry County 49.6 9,890 2,030
Bremer County 49.8 12,389 1,983
Plymouth County 50.0 12,541 1,945
Union County 50.3 6,211 1,903
Clarke County 50.4 4,713 1,879
Washington County 50.5 11,170 1,830
Madison County 50.8 8,136 1,774
Poweshiek County 50.8 9,348 1,761
Palo Alto County 51.4 4,627 1,614
Howard County 51.6 4,759 1,566
Winneshiek County 51.8 10,491 1,512
Winnebago County 52.0 5,475 1,467
Louisa County 52.2 5,831 1,420
Jasper County 52.2 19,298 1,415
Boone County 52.4 13,810 1,384
Taylor County 52.4 3,231 1,378
Mills County 52.5 7,894 1,347
Carroll County 52.5 10,653 1,342
Humboldt County 52.6 5,021 1,334
Benton County 52.7 13,501 1,309
Wayne County 52.7 3,386 1,306
Clinton County 52.7 24,733 1,285
Wright County 52.8 6,721 1,274
Iowa County 52.8 8,549 1,266
Tama County 53.0 9,031 1,217
Des Moines County 53.2 20,938 1,190
Franklin County 53.2 5,405 1,179
Emmet County 53.3 5,033 1,140
Fayette County 53.4 10,582 1,119
Lee County 53.5 18,306 1,112
Grundy County 53.5 6,579 1,109
O'Brien County 53.5 7,408 1,089
Clay County 53.6 8,686 1,084
Jones County 53.6 11,020 1,075
Hamilton County 53.6 8,041 1,067
Floyd County 53.7 8,481 1,050
Osceola County 53.8 3,256 1,030
Ida County 53.8 3,715 1,023
Cedar County 53.9 9,950 1,010
Delaware County 53.9 9,269 1,000
Ringgold County 54.0 2,681 989
Monroe County 54.0 4,217 987
Jackson County 54.1 10,495 967
Keokuk County 54.2 5,525 938
Page County 54.3 8,283 933
Mitchell County 54.3 5,759 924
Harrison County 54.3 7,655 915
Calhoun County 54.4 5,304 894
Allamakee County 54.5 7,527 879
Cerro Gordo County 54.5 23,358 871
Lucas County 54.6 4,688 861
Worth County 54.6 4,067 857
Hancock County 54.7 5,910 848
Kossuth County 54.9 8,218 819
Butler County 55.0 8,040 802
Chickasaw County 55.0 6,613 797
Jefferson County 55.0 9,980 795
Greene County 55.0 4,922 794
Hardin County 55.0 9,383 793
Appanoose County 55.1 6,864 777
Adair County 55.4 3,923 723
Montgomery County 55.5 5,577 707
Shelby County 55.6 6,453 685
Guthrie County 55.6 5,936 679
Van Buren County 55.7 3,981 676
Cherokee County 55.8 6,330 658
Cass County 56.1 7,348 610
Monona County 56.3 4,914 587
Adams County 56.5 2,072 567
Sac County 56.6 5,549 544
Clayton County 56.7 9,993 534
Fremont County 57.1 3,963 506
Audubon County 57.4 3,200 467
Pocahontas County 57.8 3,927 428
Dickinson County 58.3 9,977 378
Notes:
Created by statecancerprofiles.cancer.gov on 08/11/2022 11:52 pm.
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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