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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
2017-2021 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 3143 counties)
 sort by rank ascending
Iowa 47.8 1,518,059 31 of 52
United States 47.9 157,871,085 N/A
Story County 34.3 33,643 3,119
Johnson County 37.6 57,140 3,075
Dallas County 42.1 40,633 2,920
Sioux County 42.9 15,294 2,872
Polk County 43.9 214,394 2,805
Black Hawk County 44.3 58,183 2,779
Buena Vista County 44.4 9,194 2,771
Woodbury County 44.9 47,217 2,716
Davis County 45.2 4,094 2,693
Decatur County 45.8 3,538 2,608
Crawford County 46.0 7,616 2,588
Linn County 47.4 108,242 2,435
Muscatine County 47.5 20,496 2,414
Lyon County 47.6 5,684 2,409
Clarke County 47.7 4,644 2,389
Warren County 48.0 24,884 2,336
Scott County 48.2 83,889 2,311
Dubuque County 48.2 47,568 2,303
Marshall County 48.2 19,350 2,302
Mahaska County 48.5 10,738 2,247
Bremer County 48.6 12,082 2,237
Webster County 48.8 18,120 2,185
Buchanan County 49.0 10,084 2,161
Pottawattamie County 49.3 46,166 2,095
Wapello County 49.4 17,442 2,092
Union County 49.5 6,032 2,068
Marion County 49.5 16,516 2,067
Washington County 50.3 11,320 1,904
Howard County 50.4 4,767 1,868
Plymouth County 50.5 12,889 1,856
Henry County 50.8 10,400 1,777
Madison County 50.8 8,334 1,773
Poweshiek County 50.9 9,481 1,736
O'Brien County 50.9 7,201 1,729
Jasper County 51.1 19,274 1,666
Winnebago County 51.3 5,506 1,640
Clay County 51.4 8,434 1,614
Ida County 51.5 3,592 1,597
Monroe County 51.6 3,913 1,574
Winneshiek County 51.6 10,365 1,569
Tama County 51.6 8,811 1,561
Wayne County 51.6 3,359 1,547
Humboldt County 52.2 5,018 1,415
Palo Alto County 52.3 4,701 1,388
Carroll County 52.3 10,854 1,376
Harrison County 52.4 7,644 1,356
Montgomery County 52.5 5,426 1,323
Mills County 52.6 7,713 1,296
Boone County 52.6 14,065 1,288
Wright County 52.7 6,841 1,279
Louisa County 52.7 5,742 1,277
Mitchell County 52.7 5,552 1,271
Clinton County 52.8 24,580 1,267
Jefferson County 52.9 8,378 1,244
Cedar County 52.9 9,781 1,240
Des Moines County 52.9 20,663 1,239
Fayette County 52.9 10,358 1,232
Calhoun County 53.0 5,280 1,212
Grundy County 53.0 6,543 1,202
Adair County 53.1 3,947 1,196
Emmet County 53.1 5,005 1,195
Hamilton County 53.2 8,021 1,156
Benton County 53.4 13,688 1,117
Chickasaw County 53.4 6,420 1,105
Floyd County 53.6 8,401 1,058
Appanoose County 53.7 6,609 1,044
Iowa County 53.7 8,918 1,036
Taylor County 53.7 3,188 1,033
Ringgold County 53.8 2,548 1,028
Lee County 53.8 18,156 1,016
Keokuk County 53.9 5,413 1,010
Lucas County 53.9 4,662 995
Allamakee County 54.0 7,596 974
Jackson County 54.0 10,533 968
Jones County 54.1 11,198 941
Shelby County 54.2 6,372 928
Osceola County 54.3 3,350 907
Cerro Gordo County 54.3 23,466 900
Franklin County 54.3 5,465 898
Butler County 54.4 7,841 892
Kossuth County 54.4 8,062 887
Delaware County 54.5 9,534 871
Greene County 54.7 4,828 842
Worth County 54.7 4,074 839
Pocahontas County 54.9 3,891 805
Hancock County 54.9 5,952 792
Page County 55.1 8,405 751
Hardin County 55.4 9,410 701
Monona County 55.7 4,862 663
Van Buren County 55.7 4,010 652
Adams County 55.9 2,065 639
Cass County 56.0 7,372 621
Sac County 56.1 5,513 614
Fremont County 56.1 3,763 605
Clayton County 56.5 9,698 560
Audubon County 56.8 3,211 530
Cherokee County 56.8 6,593 525
Guthrie County 56.9 6,035 515
Dickinson County 58.8 10,316 327
Notes:
Created by statecancerprofiles.cancer.gov on 03/02/2024 1:22 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.
Data for United States does not include Puerto Rico.

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