Ranking of Iowa Counties By Percentage of 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 (16.08% of Iowa population). Among all Iowa counties, Buena Vista County had the highest percentage of its population with Other Groups ancestry (37.94%), followed by Crawford County (32.27%), and Marshall County (29.51%).
The chart and table below shows the top 10 counties with high percentage of its population having 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 Percentage of Population with Other Groups Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Buena Vista County | 37.94 |
| 2 | Crawford County | 32.27 |
| 3 | Marshall County | 29.51 |
| 4 | Woodbury County | 27.50 |
| 5 | Clarke County | 23.27 |
| 6 | Wapello County | 22.26 |
| 7 | Louisa County | 22.04 |
| 8 | Polk County | 21.71 |
| 9 | Tama County | 21.63 |
| 10 | Scott County | 20.93 |
| 11 | Taylor County | 20.84 |
| 12 | Muscatine County | 20.74 |
| 13 | Page County | 20.29 |
| 14 | Johnson County | 19.64 |
| 15 | Jefferson County | 19.51 |
| 16 | Franklin County | 17.62 |
| 17 | Wright County | 17.08 |
| 18 | Decatur County | 16.92 |
| 19 | Story County | 16.69 |
| 20 | Henry County | 16.67 |
| 21 | Fremont County | 16.52 |
| 22 | Black Hawk County | 16.50 |
| 23 | Union County | 16.21 |
| 24 | Des Moines County | 15.64 |
| 25 | Webster County | 15.53 |
| 26 | Pottawattamie County | 15.52 |
| 27 | Osceola County | 15.37 |
| 28 | Dallas County | 15.29 |
| 29 | Montgomery County | 15.01 |
| 30 | Lee County | 14.68 |
| 31 | Linn County | 14.54 |
| 32 | Adams County | 14.53 |
| 33 | Washington County | 13.98 |
| 34 | Mills County | 13.59 |
| 35 | Plymouth County | 13.39 |
| 36 | Emmet County | 12.84 |
| 37 | Poweshiek County | 12.78 |
| 38 | Clay County | 12.72 |
| 39 | Cerro Gordo County | 12.60 |
| 40 | Lucas County | 12.51 |
| 41 | Davis County | 12.43 |
| 42 | Dubuque County | 12.21 |
| 43 | Hamilton County | 12.20 |
| 44 | Warren County | 12.19 |
| 45 | Appanoose County | 12.06 |
| 46 | Floyd County | 11.89 |
| 47 | Humboldt County | 11.87 |
| 48 | Mahaska County | 11.83 |
| 49 | Ringgold County | 11.65 |
| 50 | Cass County | 11.50 |
| 51 | Clinton County | 11.48 |
| 52 | Adair County | 11.33 |
| 53 | Sioux County | 11.17 |
| 54 | Jasper County | 11.13 |
| 55 | Sac County | 10.77 |
| 56 | Madison County | 10.73 |
| 57 | Guthrie County | 10.72 |
| 58 | Allamakee County | 10.71 |
| 59 | Marion County | 10.55 |
| 60 | Winnebago County | 10.42 |
| 61 | Calhoun County | 10.33 |
| 62 | Hancock County | 10.32 |
| 62 | Monona County | 10.32 |
| 63 | Wayne County | 10.01 |
| 64 | Monroe County | 9.99 |
| 65 | Iowa County | 9.88 |
| 66 | Jones County | 9.51 |
| 67 | Kossuth County | 9.47 |
| 68 | Ida County | 9.39 |
| 69 | Keokuk County | 9.37 |
| 70 | Hardin County | 9.24 |
| 71 | Pocahontas County | 9.12 |
| 72 | Worth County | 8.94 |
| 73 | Palo Alto County | 8.65 |
| 74 | Fayette County | 8.58 |
| 75 | Grundy County | 8.23 |
| 76 | Chickasaw County | 8.20 |
| 77 | Delaware County | 8.19 |
| 78 | Cedar County | 8.18 |
| 79 | Boone County | 8.05 |
| 80 | Harrison County | 8.04 |
| 81 | Van Buren County | 7.89 |
| 82 | Jackson County | 7.88 |
| 83 | Buchanan County | 7.83 |
| 84 | Carroll County | 7.77 |
| 85 | O'Brien County | 7.69 |
| 86 | Benton County | 7.54 |
| 87 | Butler County | 7.39 |
| 88 | Lyon County | 7.38 |
| 89 | Shelby County | 7.35 |
| 90 | Mitchell County | 7.34 |
| 91 | Audubon County | 7.11 |
| 92 | Dickinson County | 7.09 |
| 93 | Bremer County | 6.99 |
| 94 | Clayton County | 6.96 |
| 95 | Greene County | 6.90 |
| 96 | Cherokee County | 6.76 |
| 97 | Howard County | 6.11 |
| 98 | Winneshiek County | 5.98 |
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