Ranking of Iowa Counties By Percentage of Population that are White Alone in 2010
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2010, among all Iowa counties, Lyon County had the highest percentage of its population who identified their race as White Alone (99.02%), followed by Mitchell County (99%), and Adair County (98.89%).
The chart below shows the top 10 counties, and the table below shows the ranking of all Iowa counties.
You can see similar ranking information for other racial and ethnicity groups in the United States.
You can also see similar information for other states, and also the ranking of all counties in the United States.
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Related Topics: Iowa Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage).
See this for other years:
Ranking of Iowa Counties By Percentage of Pop. that are
White Alone in 2010
Items per page:
25
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| Rank | County | % of County Population |
|---|---|---|
| 1 | Lyon County | 99.02 |
| 2 | Mitchell County | 99 |
| 3 | Adair County | 98.89 |
| 3 | Lucas County | 98.89 |
| 4 | Grundy County | 98.85 |
| 5 | Chickasaw County | 98.81 |
| 6 | Ida County | 98.78 |
| 7 | Butler County | 98.71 |
| 8 | Delaware County | 98.69 |
| 9 | Keokuk County | 98.68 |
| 10 | Davis County | 98.67 |
| 11 | Audubon County | 98.64 |
| 12 | Sac County | 98.6 |
| 13 | Dickinson County | 98.57 |
| 13 | Wayne County | 98.57 |
| 14 | Taylor County | 98.55 |
| 15 | Howard County | 98.53 |
| 16 | Van Buren County | 98.51 |
| 17 | Guthrie County | 98.49 |
| 17 | Harrison County | 98.49 |
| 18 | Ringgold County | 98.47 |
| 19 | Clayton County | 98.46 |
| 20 | Shelby County | 98.44 |
| 21 | Kossuth County | 98.41 |
| 22 | Iowa County | 98.4 |
| 23 | Montgomery County | 98.39 |
| 24 | Cass County | 98.38 |
| 25 | Greene County | 98.34 |
| 26 | Benton County | 98.33 |
| 26 | Madison County | 98.33 |
| 27 | Pocahontas County | 98.27 |
| 28 | Monroe County | 98.21 |
| 29 | Adams County | 98.19 |
| 30 | Worth County | 98.17 |
| 31 | Cedar County | 98.16 |
| 32 | Osceola County | 98.14 |
| 33 | Buchanan County | 98.13 |
| 34 | Hancock County | 98.11 |
| 35 | Carroll County | 98.07 |
| 36 | Fremont County | 98.06 |
| 37 | Palo Alto County | 98.05 |
| 38 | Appanoose County | 98.04 |
| 39 | Humboldt County | 98.03 |
| 40 | O'Brien County | 97.98 |
| 41 | Wright County | 97.97 |
| 42 | Franklin County | 97.89 |
| 42 | Plymouth County | 97.89 |
| 43 | Mills County | 97.83 |
| 44 | Jackson County | 97.81 |
| 45 | Clay County | 97.78 |
| 46 | Cherokee County | 97.74 |
| 47 | Clarke County | 97.69 |
| 48 | Sioux County | 97.64 |
| 48 | Washington County | 97.64 |
| 49 | Boone County | 97.61 |
| 50 | Warren County | 97.6 |
| 51 | Allamakee County | 97.51 |
| 52 | Union County | 97.5 |
| 52 | Winneshiek County | 97.5 |
| 53 | Bremer County | 97.47 |
| 53 | Fayette County | 97.47 |
| 54 | Monona County | 97.34 |
| 55 | Winnebago County | 97.33 |
| 56 | Calhoun County | 97.25 |
| 57 | Jasper County | 97.14 |
| 58 | Hardin County | 97.09 |
| 59 | Marion County | 97 |
| 60 | Louisa County | 96.91 |
| 61 | Jones County | 96.73 |
| 62 | Floyd County | 96.53 |
| 63 | Mahaska County | 96.34 |
| 64 | Emmet County | 96.27 |
| 65 | Cerro Gordo County | 96.17 |
| 66 | Hamilton County | 96.12 |
| 67 | Crawford County | 96.11 |
| 68 | Muscatine County | 95.9 |
| 69 | Decatur County | 95.88 |
| 70 | Pottawattamie County | 95.81 |
| 71 | Poweshiek County | 95.67 |
| 72 | Wapello County | 95.57 |
| 73 | Page County | 95.09 |
| 74 | Clinton County | 94.81 |
| 75 | Marshall County | 94.6 |
| 76 | Dubuque County | 94.58 |
| 77 | Dallas County | 94.37 |
| 78 | Lee County | 94.33 |
| 79 | Henry County | 93.51 |
| 80 | Webster County | 93.49 |
| 81 | Des Moines County | 91.64 |
| 82 | Linn County | 91.54 |
| 83 | Woodbury County | 89.66 |
| 84 | Story County | 89.49 |
| 85 | Buena Vista County | 89.37 |
| 86 | Tama County | 89.02 |
| 87 | Jefferson County | 88.3 |
| 88 | Scott County | 87.71 |
| 89 | Polk County | 87.62 |
| 90 | Johnson County | 87.28 |
| 91 | Black Hawk County | 87.04 |