Ranking of Iowa Counties By Percentage of Population with American Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 140.16K people in Iowa with American ancestry (4.41% of Iowa population). Among all Iowa counties, Wayne County had the highest percentage of its population with American ancestry (10.21%), followed by Davis County (9.30%), and Ringgold County (8.08%).
The chart and table below shows the top 10 counties with high percentage of its population having American 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 American Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Wayne County | 10.21 |
| 2 | Davis County | 9.30 |
| 3 | Ringgold County | 8.08 |
| 4 | Mitchell County | 8.01 |
| 5 | Lucas County | 7.88 |
| 6 | Taylor County | 7.52 |
| 7 | Jefferson County | 7.13 |
| 8 | Keokuk County | 6.95 |
| 9 | Mahaska County | 6.90 |
| 10 | Union County | 6.87 |
| 11 | Adams County | 6.84 |
| 11 | Wapello County | 6.84 |
| 12 | Fayette County | 6.77 |
| 13 | Appanoose County | 6.73 |
| 14 | Fremont County | 6.60 |
| 15 | Benton County | 6.58 |
| 16 | Washington County | 6.39 |
| 17 | Decatur County | 6.36 |
| 18 | Van Buren County | 6.34 |
| 19 | Allamakee County | 6.33 |
| 20 | Jasper County | 6.16 |
| 21 | Des Moines County | 5.99 |
| 22 | Buchanan County | 5.90 |
| 23 | Ida County | 5.80 |
| 24 | Clay County | 5.73 |
| 25 | Calhoun County | 5.72 |
| 25 | Henry County | 5.72 |
| 26 | Marion County | 5.65 |
| 27 | Clayton County | 5.62 |
| 28 | Delaware County | 5.46 |
| 29 | Lee County | 5.33 |
| 30 | Carroll County | 5.30 |
| 31 | Pottawattamie County | 5.28 |
| 32 | Grundy County | 5.27 |
| 33 | Harrison County | 5.25 |
| 34 | Iowa County | 5.22 |
| 35 | Monroe County | 5.18 |
| 36 | Cedar County | 5.10 |
| 36 | Madison County | 5.10 |
| 37 | Poweshiek County | 5.08 |
| 38 | Jackson County | 5.06 |
| 39 | Cass County | 5.02 |
| 40 | Osceola County | 4.96 |
| 41 | Palo Alto County | 4.91 |
| 42 | Monona County | 4.86 |
| 43 | Louisa County | 4.84 |
| 43 | Warren County | 4.84 |
| 44 | Sac County | 4.81 |
| 45 | Adair County | 4.77 |
| 46 | Winnebago County | 4.75 |
| 47 | Audubon County | 4.74 |
| 48 | Dubuque County | 4.66 |
| 49 | Greene County | 4.65 |
| 50 | Guthrie County | 4.62 |
| 51 | Black Hawk County | 4.59 |
| 52 | Clinton County | 4.51 |
| 53 | Montgomery County | 4.49 |
| 54 | Butler County | 4.43 |
| 55 | Bremer County | 4.38 |
| 56 | Lyon County | 4.33 |
| 56 | Mills County | 4.33 |
| 57 | Woodbury County | 4.28 |
| 58 | Page County | 4.26 |
| 59 | Jones County | 4.18 |
| 60 | Webster County | 4.17 |
| 61 | Shelby County | 4.06 |
| 62 | Marshall County | 4.02 |
| 63 | Crawford County | 4.00 |
| 64 | Muscatine County | 3.99 |
| 65 | Cherokee County | 3.97 |
| 65 | Dallas County | 3.97 |
| 66 | Scott County | 3.95 |
| 67 | Plymouth County | 3.92 |
| 68 | Linn County | 3.83 |
| 69 | Hancock County | 3.82 |
| 70 | Boone County | 3.79 |
| 70 | Pocahontas County | 3.79 |
| 71 | Winneshiek County | 3.78 |
| 71 | Wright County | 3.78 |
| 72 | Polk County | 3.76 |
| 73 | O'Brien County | 3.72 |
| 74 | Johnson County | 3.66 |
| 75 | Hardin County | 3.62 |
| 76 | Kossuth County | 3.60 |
| 77 | Clarke County | 3.59 |
| 78 | Dickinson County | 3.51 |
| 79 | Chickasaw County | 3.41 |
| 80 | Sioux County | 3.39 |
| 81 | Franklin County | 3.36 |
| 82 | Tama County | 3.29 |
| 83 | Humboldt County | 3.28 |
| 84 | Cerro Gordo County | 3.27 |
| 85 | Hamilton County | 3.24 |
| 86 | Howard County | 3.17 |
| 87 | Floyd County | 3.12 |
| 88 | Emmet County | 2.97 |
| 89 | Story County | 2.60 |
| 90 | Worth County | 2.16 |
| 91 | Buena Vista County | 1.95 |
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