Ranking of Iowa Counties By Population with Other Groups Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 511.26K people in Iowa with Other Groups ancestry. Among all Iowa counties, Polk County had the highest population with Other Groups ancestry (106.11K), followed by Scott County (36.46K), and Linn County (33.23K).
The chart and table below shows the top 10 counties with high number of people with Other Groups ancestry.
You can see similar information for other states and for other ancestry groups in Iowa.
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Related Topics: Iowa ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Iowa Counties By Population with Other Groups Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Polk County | 106108 |
| 2 | Scott County | 36459 |
| 3 | Linn County | 33225 |
| 4 | Johnson County | 29823 |
| 5 | Woodbury County | 28907 |
| 6 | Black Hawk County | 21679 |
| 7 | Story County | 16376 |
| 8 | Dallas County | 14769 |
| 9 | Pottawattamie County | 14518 |
| 10 | Dubuque County | 12048 |
| 11 | Marshall County | 11846 |
| 12 | Muscatine County | 8949 |
| 13 | Wapello County | 7867 |
| 14 | Buena Vista County | 7863 |
| 15 | Warren County | 6324 |
| 16 | Des Moines County | 6109 |
| 17 | Webster County | 5762 |
| 18 | Cerro Gordo County | 5439 |
| 19 | Clinton County | 5348 |
| 20 | Crawford County | 5342 |
| 21 | Lee County | 4949 |
| 22 | Jasper County | 4195 |
| 23 | Sioux County | 3980 |
| 24 | Tama County | 3694 |
| 25 | Marion County | 3522 |
| 26 | Plymouth County | 3420 |
| 27 | Henry County | 3415 |
| 28 | Washington County | 3149 |
| 29 | Page County | 3094 |
| 30 | Jefferson County | 3091 |
| 31 | Mahaska County | 2617 |
| 32 | Louisa County | 2400 |
| 33 | Poweshiek County | 2381 |
| 34 | Clarke County | 2266 |
| 35 | Wright County | 2216 |
| 36 | Boone County | 2152 |
| 37 | Clay County | 2088 |
| 38 | Mills County | 1992 |
| 39 | Union County | 1977 |
| 40 | Jones County | 1966 |
| 41 | Benton County | 1933 |
| 42 | Floyd County | 1864 |
| 43 | Hamilton County | 1839 |
| 44 | Franklin County | 1772 |
| 45 | Madison County | 1761 |
| 46 | Bremer County | 1737 |
| 47 | Fayette County | 1681 |
| 48 | Iowa County | 1640 |
| 49 | Buchanan County | 1613 |
| 49 | Carroll County | 1613 |
| 50 | Hardin County | 1571 |
| 51 | Montgomery County | 1550 |
| 52 | Jackson County | 1536 |
| 53 | Cass County | 1513 |
| 53 | Cedar County | 1513 |
| 54 | Allamakee County | 1506 |
| 55 | Appanoose County | 1484 |
| 56 | Delaware County | 1433 |
| 57 | Kossuth County | 1403 |
| 58 | Decatur County | 1306 |
| 59 | Dickinson County | 1244 |
| 60 | Taylor County | 1236 |
| 61 | Emmet County | 1211 |
| 62 | Winneshiek County | 1201 |
| 63 | Clayton County | 1195 |
| 64 | Harrison County | 1173 |
| 65 | Humboldt County | 1142 |
| 66 | Guthrie County | 1136 |
| 67 | Davis County | 1127 |
| 68 | Winnebago County | 1119 |
| 69 | Hancock County | 1118 |
| 70 | Fremont County | 1107 |
| 71 | O'Brien County | 1087 |
| 72 | Lucas County | 1082 |
| 73 | Butler County | 1065 |
| 74 | Sac County | 1059 |
| 75 | Calhoun County | 1029 |
| 76 | Grundy County | 1015 |
| 77 | Chickasaw County | 986 |
| 78 | Osceola County | 948 |
| 79 | Keokuk County | 942 |
| 80 | Monona County | 901 |
| 81 | Lyon County | 882 |
| 82 | Shelby County | 863 |
| 83 | Adair County | 843 |
| 84 | Cherokee County | 785 |
| 85 | Palo Alto County | 778 |
| 86 | Mitchell County | 773 |
| 87 | Monroe County | 758 |
| 88 | Worth County | 666 |
| 89 | Ida County | 655 |
| 90 | Wayne County | 651 |
| 91 | Pocahontas County | 647 |
| 92 | Greene County | 609 |
| 93 | Howard County | 578 |
| 94 | Van Buren County | 568 |
| 95 | Ringgold County | 552 |
| 96 | Adams County | 537 |
| 97 | Audubon County | 402 |
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