Ranking of Iowa Counties By Percentage of Population with English Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 275.82K people in Iowa with English ancestry (8.68% of Iowa population). Among all Iowa counties, Mills County had the highest percentage of its population with English ancestry (15.66%), followed by Adams County (15.15%), and Taylor County (15.07%).
The chart and table below shows the top 10 counties with high percentage of its population having English 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 English Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Mills County | 15.66 |
| 2 | Adams County | 15.15 |
| 3 | Taylor County | 15.07 |
| 4 | Clarke County | 14.30 |
| 5 | Ringgold County | 13.97 |
| 6 | Mahaska County | 13.83 |
| 7 | Appanoose County | 13.60 |
| 8 | Warren County | 13.21 |
| 9 | Monroe County | 13.14 |
| 10 | Lucas County | 13.09 |
| 11 | Greene County | 12.82 |
| 12 | Wayne County | 12.72 |
| 13 | Montgomery County | 12.09 |
| 14 | Fremont County | 11.80 |
| 15 | Wapello County | 11.68 |
| 16 | Decatur County | 11.35 |
| 17 | Page County | 11.23 |
| 18 | Harrison County | 11.02 |
| 18 | Union County | 11.02 |
| 19 | Madison County | 10.39 |
| 20 | Johnson County | 10.19 |
| 21 | Guthrie County | 10.15 |
| 22 | Dallas County | 9.92 |
| 23 | Pottawattamie County | 9.91 |
| 24 | Polk County | 9.85 |
| 25 | Marion County | 9.83 |
| 26 | Boone County | 9.52 |
| 27 | Story County | 9.51 |
| 28 | Cass County | 9.50 |
| 29 | Jefferson County | 9.47 |
| 30 | Jasper County | 9.42 |
| 31 | Linn County | 9.39 |
| 32 | Iowa County | 9.31 |
| 33 | Keokuk County | 9.29 |
| 34 | Buchanan County | 8.84 |
| 35 | Monona County | 8.83 |
| 36 | Scott County | 8.81 |
| 37 | Henry County | 8.76 |
| 38 | Calhoun County | 8.75 |
| 39 | Poweshiek County | 8.74 |
| 40 | Adair County | 8.64 |
| 41 | Van Buren County | 8.63 |
| 42 | Davis County | 8.48 |
| 43 | Lee County | 8.45 |
| 44 | Des Moines County | 8.30 |
| 45 | Marshall County | 8.29 |
| 46 | Audubon County | 8.27 |
| 47 | Delaware County | 8.17 |
| 48 | Emmet County | 8.12 |
| 49 | Winneshiek County | 8.11 |
| 50 | Hardin County | 7.90 |
| 50 | Ida County | 7.90 |
| 51 | Sac County | 7.89 |
| 52 | Bremer County | 7.87 |
| 53 | Washington County | 7.83 |
| 54 | Wright County | 7.82 |
| 55 | Black Hawk County | 7.76 |
| 56 | Benton County | 7.58 |
| 57 | Jones County | 7.49 |
| 58 | Shelby County | 7.46 |
| 59 | Dickinson County | 7.31 |
| 60 | Fayette County | 7.30 |
| 61 | Clinton County | 7.28 |
| 62 | Grundy County | 7.26 |
| 63 | Hamilton County | 7.23 |
| 64 | Palo Alto County | 7.05 |
| 65 | Louisa County | 6.98 |
| 66 | Cedar County | 6.91 |
| 66 | Humboldt County | 6.91 |
| 67 | Woodbury County | 6.84 |
| 68 | Muscatine County | 6.73 |
| 69 | Allamakee County | 6.68 |
| 70 | Worth County | 6.48 |
| 71 | Cerro Gordo County | 6.39 |
| 72 | Webster County | 6.38 |
| 73 | Kossuth County | 6.36 |
| 74 | Mitchell County | 6.24 |
| 75 | Cherokee County | 6.22 |
| 76 | Tama County | 6.20 |
| 77 | Floyd County | 6.16 |
| 78 | Clayton County | 6.08 |
| 79 | Clay County | 6.06 |
| 80 | Dubuque County | 5.94 |
| 81 | Franklin County | 5.87 |
| 82 | Winnebago County | 5.86 |
| 83 | Plymouth County | 5.60 |
| 84 | Butler County | 5.46 |
| 85 | Pocahontas County | 5.44 |
| 86 | Jackson County | 5.41 |
| 87 | O'Brien County | 5.28 |
| 88 | Hancock County | 5.26 |
| 89 | Buena Vista County | 5.06 |
| 90 | Carroll County | 5.04 |
| 91 | Crawford County | 4.74 |
| 92 | Howard County | 4.40 |
| 93 | Chickasaw County | 3.94 |
| 94 | Sioux County | 3.68 |
| 95 | Lyon County | 2.49 |
| 96 | Osceola County | 2.46 |
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