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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 Count
County
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Value (Percent)
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People (Age 40 And Over)
 sort by sample size descending
Rank within US
(of 3146 counties)
 sort by rank ascending
Iowa 47.7 1,498,923 27 of 52
United States 47.6 154,520,356 N/A
Adams County 56.5 2,072 567
Ringgold County 54.0 2,681 989
Audubon County 57.4 3,200 467
Taylor County 52.4 3,231 1,378
Osceola County 53.8 3,256 1,030
Wayne County 52.7 3,386 1,306
Decatur County 46.2 3,683 2,568
Ida County 53.8 3,715 1,023
Adair County 55.4 3,923 723
Pocahontas County 57.8 3,927 428
Fremont County 57.1 3,963 506
Van Buren County 55.7 3,981 676
Worth County 54.6 4,067 857
Davis County 45.9 4,092 2,596
Monroe County 54.0 4,217 987
Palo Alto County 51.4 4,627 1,614
Lucas County 54.6 4,688 861
Clarke County 50.4 4,713 1,879
Howard County 51.6 4,759 1,566
Monona County 56.3 4,914 587
Greene County 55.0 4,922 794
Humboldt County 52.6 5,021 1,334
Emmet County 53.3 5,033 1,140
Calhoun County 54.4 5,304 894
Franklin County 53.2 5,405 1,179
Winnebago County 52.0 5,475 1,467
Keokuk County 54.2 5,525 938
Sac County 56.6 5,549 544
Montgomery County 55.5 5,577 707
Lyon County 47.5 5,589 2,404
Mitchell County 54.3 5,759 924
Louisa County 52.2 5,831 1,420
Hancock County 54.7 5,910 848
Guthrie County 55.6 5,936 679
Union County 50.3 6,211 1,903
Cherokee County 55.8 6,330 658
Shelby County 55.6 6,453 685
Grundy County 53.5 6,579 1,109
Chickasaw County 55.0 6,613 797
Wright County 52.8 6,721 1,274
Appanoose County 55.1 6,864 777
Cass County 56.1 7,348 610
O'Brien County 53.5 7,408 1,089
Allamakee County 54.5 7,527 879
Harrison County 54.3 7,655 915
Mills County 52.5 7,894 1,347
Butler County 55.0 8,040 802
Hamilton County 53.6 8,041 1,067
Madison County 50.8 8,136 1,774
Kossuth County 54.9 8,218 819
Crawford County 48.5 8,256 2,246
Page County 54.3 8,283 933
Floyd County 53.7 8,481 1,050
Iowa County 52.8 8,549 1,266
Clay County 53.6 8,686 1,084
Buena Vista County 43.7 8,756 2,808
Tama County 53.0 9,031 1,217
Delaware County 53.9 9,269 1,000
Poweshiek County 50.8 9,348 1,761
Hardin County 55.0 9,383 793
Henry County 49.6 9,890 2,030
Cedar County 53.9 9,950 1,010
Dickinson County 58.3 9,977 378
Jefferson County 55.0 9,980 795
Clayton County 56.7 9,993 534
Buchanan County 49.1 10,372 2,125
Winneshiek County 51.8 10,491 1,512
Jackson County 54.1 10,495 967
Fayette County 53.4 10,582 1,119
Carroll County 52.5 10,653 1,342
Mahaska County 49.4 10,939 2,069
Jones County 53.6 11,020 1,075
Washington County 50.5 11,170 1,830
Bremer County 49.8 12,389 1,983
Plymouth County 50.0 12,541 1,945
Benton County 52.7 13,501 1,309
Boone County 52.4 13,810 1,384
Sioux County 41.7 14,528 2,925
Marion County 49.1 16,297 2,121
Wapello County 49.3 17,334 2,078
Webster County 48.9 17,879 2,163
Lee County 53.5 18,306 1,112
Jasper County 52.2 19,298 1,415
Marshall County 48.6 19,426 2,226
Muscatine County 47.5 20,355 2,405
Des Moines County 53.2 20,938 1,190
Cerro Gordo County 54.5 23,358 871
Warren County 47.8 23,913 2,354
Clinton County 52.7 24,733 1,285
Story County 33.5 32,510 3,123
Dallas County 41.5 36,181 2,937
Woodbury County 44.5 45,661 2,738
Pottawattamie County 49.6 46,315 2,031
Dubuque County 48.7 47,250 2,209
Johnson County 36.7 54,566 3,086
Black Hawk County 43.9 58,073 2,793
Scott County 47.7 82,203 2,371
Linn County 46.8 104,877 2,493
Polk County 43.6 209,158 2,811
Notes:
Created by statecancerprofiles.cancer.gov on 09/26/2022 2:04 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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