Interpretation of Demographics Data
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
United States
- Value (Percent) : The value is 47.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 154,520,356.
- Rank within US : N/A
Iowa
- Value (Percent) : The value is 47.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 1,498,923.
- Rank within US : This state is ranked 27 of 52
Story County
- Value (Percent) : The value is 33.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 32,510.
- Rank within US : This county is ranked 3123 of 3146
Johnson County
- Value (Percent) : The value is 36.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 54,566.
- Rank within US : This county is ranked 3086 of 3146
Dallas County
- Value (Percent) : The value is 41.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 36,181.
- Rank within US : This county is ranked 2937 of 3146
Sioux County
- Value (Percent) : The value is 41.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 14,528.
- Rank within US : This county is ranked 2925 of 3146
Polk County
- Value (Percent) : The value is 43.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 209,158.
- Rank within US : This county is ranked 2811 of 3146
Buena Vista County
- Value (Percent) : The value is 43.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,756.
- Rank within US : This county is ranked 2808 of 3146
Black Hawk County
- Value (Percent) : The value is 43.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 58,073.
- Rank within US : This county is ranked 2793 of 3146
Woodbury County
- Value (Percent) : The value is 44.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 45,661.
- Rank within US : This county is ranked 2738 of 3146
Davis County
- Value (Percent) : The value is 45.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,092.
- Rank within US : This county is ranked 2596 of 3146
Decatur County
- Value (Percent) : The value is 46.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,683.
- Rank within US : This county is ranked 2568 of 3146
Linn County
- Value (Percent) : The value is 46.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 104,877.
- Rank within US : This county is ranked 2493 of 3146
Muscatine County
- Value (Percent) : The value is 47.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 20,355.
- Rank within US : This county is ranked 2405 of 3146
Lyon County
- Value (Percent) : The value is 47.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,589.
- Rank within US : This county is ranked 2404 of 3146
Scott County
- Value (Percent) : The value is 47.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 82,203.
- Rank within US : This county is ranked 2371 of 3146
Warren County
- Value (Percent) : The value is 47.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 23,913.
- Rank within US : This county is ranked 2354 of 3146
Crawford County
- Value (Percent) : The value is 48.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,256.
- Rank within US : This county is ranked 2246 of 3146
Marshall County
- Value (Percent) : The value is 48.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 19,426.
- Rank within US : This county is ranked 2226 of 3146
Dubuque County
- Value (Percent) : The value is 48.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 47,250.
- Rank within US : This county is ranked 2209 of 3146
Webster County
- Value (Percent) : The value is 48.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 17,879.
- Rank within US : This county is ranked 2163 of 3146
Buchanan County
- Value (Percent) : The value is 49.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,372.
- Rank within US : This county is ranked 2125 of 3146
Marion County
- Value (Percent) : The value is 49.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 16,297.
- Rank within US : This county is ranked 2121 of 3146
Wapello County
- Value (Percent) : The value is 49.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 17,334.
- Rank within US : This county is ranked 2078 of 3146
Mahaska County
- Value (Percent) : The value is 49.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,939.
- Rank within US : This county is ranked 2069 of 3146
Pottawattamie County
- Value (Percent) : The value is 49.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 46,315.
- Rank within US : This county is ranked 2031 of 3146
Henry County
- Value (Percent) : The value is 49.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,890.
- Rank within US : This county is ranked 2030 of 3146
Bremer County
- Value (Percent) : The value is 49.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 12,389.
- Rank within US : This county is ranked 1983 of 3146
Plymouth County
- Value (Percent) : The value is 50.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 12,541.
- Rank within US : This county is ranked 1945 of 3146
Union County
- Value (Percent) : The value is 50.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 6,211.
- Rank within US : This county is ranked 1903 of 3146
Clarke County
- Value (Percent) : The value is 50.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,713.
- Rank within US : This county is ranked 1879 of 3146
Washington County
- Value (Percent) : The value is 50.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 11,170.
- Rank within US : This county is ranked 1830 of 3146
Madison County
- Value (Percent) : The value is 50.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,136.
- Rank within US : This county is ranked 1774 of 3146
Poweshiek County
- Value (Percent) : The value is 50.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,348.
- Rank within US : This county is ranked 1761 of 3146
Palo Alto County
- Value (Percent) : The value is 51.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,627.
- Rank within US : This county is ranked 1614 of 3146
Howard County
- Value (Percent) : The value is 51.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,759.
- Rank within US : This county is ranked 1566 of 3146
Winneshiek County
- Value (Percent) : The value is 51.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,491.
- Rank within US : This county is ranked 1512 of 3146
Winnebago County
- Value (Percent) : The value is 52.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,475.
- Rank within US : This county is ranked 1467 of 3146
Louisa County
- Value (Percent) : The value is 52.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,831.
- Rank within US : This county is ranked 1420 of 3146
Jasper County
- Value (Percent) : The value is 52.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 19,298.
- Rank within US : This county is ranked 1415 of 3146
Boone County
- Value (Percent) : The value is 52.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 13,810.
- Rank within US : This county is ranked 1384 of 3146
Taylor County
- Value (Percent) : The value is 52.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,231.
- Rank within US : This county is ranked 1378 of 3146
Mills County
- Value (Percent) : The value is 52.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 7,894.
- Rank within US : This county is ranked 1347 of 3146
Carroll County
- Value (Percent) : The value is 52.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,653.
- Rank within US : This county is ranked 1342 of 3146
Humboldt County
- Value (Percent) : The value is 52.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,021.
- Rank within US : This county is ranked 1334 of 3146
Benton County
- Value (Percent) : The value is 52.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 13,501.
- Rank within US : This county is ranked 1309 of 3146
Wayne County
- Value (Percent) : The value is 52.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,386.
- Rank within US : This county is ranked 1306 of 3146
Clinton County
- Value (Percent) : The value is 52.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 24,733.
- Rank within US : This county is ranked 1285 of 3146
Wright County
- Value (Percent) : The value is 52.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 6,721.
- Rank within US : This county is ranked 1274 of 3146
Iowa County
- Value (Percent) : The value is 52.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,549.
- Rank within US : This county is ranked 1266 of 3146
Tama County
- Value (Percent) : The value is 53.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,031.
- Rank within US : This county is ranked 1217 of 3146
Des Moines County
- Value (Percent) : The value is 53.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 20,938.
- Rank within US : This county is ranked 1190 of 3146
Franklin County
- Value (Percent) : The value is 53.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,405.
- Rank within US : This county is ranked 1179 of 3146
Emmet County
- Value (Percent) : The value is 53.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,033.
- Rank within US : This county is ranked 1140 of 3146
Fayette County
- Value (Percent) : The value is 53.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,582.
- Rank within US : This county is ranked 1119 of 3146
Lee County
- Value (Percent) : The value is 53.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 18,306.
- Rank within US : This county is ranked 1112 of 3146
Grundy County
- Value (Percent) : The value is 53.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 6,579.
- Rank within US : This county is ranked 1109 of 3146
O'Brien County
- Value (Percent) : The value is 53.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 7,408.
- Rank within US : This county is ranked 1089 of 3146
Clay County
- Value (Percent) : The value is 53.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,686.
- Rank within US : This county is ranked 1084 of 3146
Jones County
- Value (Percent) : The value is 53.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 11,020.
- Rank within US : This county is ranked 1075 of 3146
Hamilton County
- Value (Percent) : The value is 53.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,041.
- Rank within US : This county is ranked 1067 of 3146
Floyd County
- Value (Percent) : The value is 53.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,481.
- Rank within US : This county is ranked 1050 of 3146
Osceola County
- Value (Percent) : The value is 53.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,256.
- Rank within US : This county is ranked 1030 of 3146
Ida County
- Value (Percent) : The value is 53.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,715.
- Rank within US : This county is ranked 1023 of 3146
Cedar County
- Value (Percent) : The value is 53.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,950.
- Rank within US : This county is ranked 1010 of 3146
Delaware County
- Value (Percent) : The value is 53.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,269.
- Rank within US : This county is ranked 1000 of 3146
Ringgold County
- Value (Percent) : The value is 54.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 2,681.
- Rank within US : This county is ranked 989 of 3146
Monroe County
- Value (Percent) : The value is 54.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,217.
- Rank within US : This county is ranked 987 of 3146
Jackson County
- Value (Percent) : The value is 54.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,495.
- Rank within US : This county is ranked 967 of 3146
Keokuk County
- Value (Percent) : The value is 54.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,525.
- Rank within US : This county is ranked 938 of 3146
Page County
- Value (Percent) : The value is 54.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,283.
- Rank within US : This county is ranked 933 of 3146
Mitchell County
- Value (Percent) : The value is 54.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,759.
- Rank within US : This county is ranked 924 of 3146
Harrison County
- Value (Percent) : The value is 54.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 7,655.
- Rank within US : This county is ranked 915 of 3146
Calhoun County
- Value (Percent) : The value is 54.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,304.
- Rank within US : This county is ranked 894 of 3146
Allamakee County
- Value (Percent) : The value is 54.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 7,527.
- Rank within US : This county is ranked 879 of 3146
Cerro Gordo County
- Value (Percent) : The value is 54.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 23,358.
- Rank within US : This county is ranked 871 of 3146
Lucas County
- Value (Percent) : The value is 54.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,688.
- Rank within US : This county is ranked 861 of 3146
Worth County
- Value (Percent) : The value is 54.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,067.
- Rank within US : This county is ranked 857 of 3146
Hancock County
- Value (Percent) : The value is 54.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,910.
- Rank within US : This county is ranked 848 of 3146
Kossuth County
- Value (Percent) : The value is 54.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,218.
- Rank within US : This county is ranked 819 of 3146
Butler County
- Value (Percent) : The value is 55.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 8,040.
- Rank within US : This county is ranked 802 of 3146
Chickasaw County
- Value (Percent) : The value is 55.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 6,613.
- Rank within US : This county is ranked 797 of 3146
Jefferson County
- Value (Percent) : The value is 55.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,980.
- Rank within US : This county is ranked 795 of 3146
Greene County
- Value (Percent) : The value is 55.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,922.
- Rank within US : This county is ranked 794 of 3146
Hardin County
- Value (Percent) : The value is 55.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,383.
- Rank within US : This county is ranked 793 of 3146
Appanoose County
- Value (Percent) : The value is 55.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 6,864.
- Rank within US : This county is ranked 777 of 3146
Adair County
- Value (Percent) : The value is 55.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,923.
- Rank within US : This county is ranked 723 of 3146
Montgomery County
- Value (Percent) : The value is 55.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,577.
- Rank within US : This county is ranked 707 of 3146
Shelby County
- Value (Percent) : The value is 55.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 6,453.
- Rank within US : This county is ranked 685 of 3146
Guthrie County
- Value (Percent) : The value is 55.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,936.
- Rank within US : This county is ranked 679 of 3146
Van Buren County
- Value (Percent) : The value is 55.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,981.
- Rank within US : This county is ranked 676 of 3146
Cherokee County
- Value (Percent) : The value is 55.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 6,330.
- Rank within US : This county is ranked 658 of 3146
Cass County
- Value (Percent) : The value is 56.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 7,348.
- Rank within US : This county is ranked 610 of 3146
Monona County
- Value (Percent) : The value is 56.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,914.
- Rank within US : This county is ranked 587 of 3146
Adams County
- Value (Percent) : The value is 56.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 2,072.
- Rank within US : This county is ranked 567 of 3146
Sac County
- Value (Percent) : The value is 56.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,549.
- Rank within US : This county is ranked 544 of 3146
Clayton County
- Value (Percent) : The value is 56.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,993.
- Rank within US : This county is ranked 534 of 3146
Fremont County
- Value (Percent) : The value is 57.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,963.
- Rank within US : This county is ranked 506 of 3146
Audubon County
- Value (Percent) : The value is 57.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,200.
- Rank within US : This county is ranked 467 of 3146
Pocahontas County
- Value (Percent) : The value is 57.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 3,927.
- Rank within US : This county is ranked 428 of 3146
Dickinson County
- Value (Percent) : The value is 58.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,977.
- Rank within US : This county is ranked 378 of 3146
Notes:
Created by statecancerprofiles.cancer.gov on 03/31/2023 2:54 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.