Ranking of Iowa Counties By Percentage of Population with European Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 50.96K people in Iowa with European ancestry (1.60% of Iowa population). Among all Iowa counties, Fremont County had the highest percentage of its population with European ancestry (3.24%), followed by Monroe County (2.68%), and Johnson County (2.56%).
The chart and table below shows the top 10 counties with high percentage of its population having European 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 European Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Fremont County | 3.24 |
| 2 | Monroe County | 2.68 |
| 3 | Johnson County | 2.56 |
| 4 | Jefferson County | 2.53 |
| 5 | Cedar County | 2.15 |
| 6 | Mills County | 2.12 |
| 7 | Taylor County | 2.09 |
| 8 | Warren County | 2.08 |
| 9 | Poweshiek County | 2.07 |
| 10 | Benton County | 2.06 |
| 10 | Linn County | 2.06 |
| 11 | Dallas County | 2.04 |
| 12 | Des Moines County | 2.02 |
| 13 | Polk County | 2.01 |
| 14 | Adair County | 1.99 |
| 15 | Jasper County | 1.93 |
| 16 | Guthrie County | 1.91 |
| 17 | Wayne County | 1.85 |
| 18 | Black Hawk County | 1.73 |
| 19 | Story County | 1.72 |
| 20 | Mahaska County | 1.68 |
| 21 | Webster County | 1.67 |
| 22 | Cerro Gordo County | 1.66 |
| 23 | Lyon County | 1.63 |
| 23 | Winneshiek County | 1.63 |
| 24 | Jones County | 1.60 |
| 25 | Decatur County | 1.58 |
| 25 | Henry County | 1.58 |
| 25 | Keokuk County | 1.58 |
| 26 | Iowa County | 1.56 |
| 27 | Madison County | 1.54 |
| 27 | Monona County | 1.54 |
| 28 | Marshall County | 1.53 |
| 29 | Cass County | 1.50 |
| 29 | Dubuque County | 1.50 |
| 29 | Lee County | 1.50 |
| 30 | Adams County | 1.49 |
| 30 | Pottawattamie County | 1.49 |
| 31 | Marion County | 1.48 |
| 32 | Washington County | 1.44 |
| 33 | Fayette County | 1.43 |
| 33 | Hancock County | 1.43 |
| 33 | Scott County | 1.43 |
| 34 | Calhoun County | 1.42 |
| 34 | Cherokee County | 1.42 |
| 35 | Carroll County | 1.39 |
| 36 | Boone County | 1.35 |
| 37 | Lucas County | 1.34 |
| 38 | Davis County | 1.32 |
| 38 | Woodbury County | 1.32 |
| 39 | Bremer County | 1.30 |
| 40 | Grundy County | 1.28 |
| 40 | Pocahontas County | 1.28 |
| 41 | Sioux County | 1.25 |
| 42 | Muscatine County | 1.24 |
| 43 | Harrison County | 1.23 |
| 44 | Van Buren County | 1.21 |
| 45 | Jackson County | 1.19 |
| 46 | Wapello County | 1.18 |
| 47 | Buchanan County | 1.17 |
| 48 | Louisa County | 1.16 |
| 49 | Clayton County | 1.14 |
| 49 | Worth County | 1.14 |
| 50 | Clarke County | 1.10 |
| 51 | Palo Alto County | 1.08 |
| 52 | Buena Vista County | 1.06 |
| 52 | Emmet County | 1.06 |
| 53 | Delaware County | 1.00 |
| 53 | Tama County | 1.00 |
| 54 | Allamakee County | 0.95 |
| 54 | Butler County | 0.95 |
| 55 | Floyd County | 0.91 |
| 56 | Franklin County | 0.90 |
| 57 | Page County | 0.87 |
| 58 | Winnebago County | 0.83 |
| 59 | Crawford County | 0.82 |
| 60 | Ringgold County | 0.80 |
| 61 | Dickinson County | 0.74 |
| 62 | Clay County | 0.70 |
| 62 | Mitchell County | 0.70 |
| 63 | Plymouth County | 0.69 |
| 64 | Audubon County | 0.67 |
| 65 | Hardin County | 0.63 |
| 65 | Union County | 0.63 |
| 66 | Greene County | 0.60 |
| 66 | Shelby County | 0.60 |
| 67 | Clinton County | 0.57 |
| 67 | Osceola County | 0.57 |
| 68 | Howard County | 0.56 |
| 69 | Wright County | 0.53 |
| 70 | Ida County | 0.49 |
| 71 | Humboldt County | 0.47 |
| 72 | Appanoose County | 0.46 |
| 72 | Sac County | 0.46 |
| 73 | Hamilton County | 0.45 |
| 74 | Montgomery County | 0.42 |
| 75 | O'Brien County | 0.40 |
| 76 | Chickasaw County | 0.33 |
| 77 | Kossuth County | 0.30 |
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