Ranking of Iowa Counties By Percentage of Population that are Non-Hispanic White in 2015
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2015, among all Iowa counties, Audubon County had the highest percentage of its population who identified their ethnicity as Non-Hispanic White (97.21%), followed by Delaware County (97.14%), and Davis County (97.09%).
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
Non-Hispanic White in 2015
25
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| Rank | County | % of County Population |
|---|---|---|
| 1 | Audubon County | 97.21 |
| 2 | Delaware County | 97.14 |
| 3 | Davis County | 97.09 |
| 4 | Mitchell County | 97.06 |
| 5 | Grundy County | 97.03 |
| 6 | Lucas County | 96.98 |
| 7 | Adams County | 96.91 |
| 8 | Van Buren County | 96.9 |
| 9 | Keokuk County | 96.88 |
| 10 | Butler County | 96.79 |
| 11 | Howard County | 96.77 |
| 12 | Adair County | 96.71 |
| 13 | Wayne County | 96.64 |
| 14 | Benton County | 96.56 |
| 15 | Harrison County | 96.55 |
| 16 | Buchanan County | 96.43 |
| 17 | Chickasaw County | 96.37 |
| 18 | Clayton County | 96.12 |
| 19 | Dickinson County | 96.07 |
| 19 | Lyon County | 96.07 |
| 20 | Cedar County | 95.98 |
| 21 | Ringgold County | 95.94 |
| 22 | Cass County | 95.93 |
| 23 | Madison County | 95.91 |
| 24 | Jackson County | 95.86 |
| 25 | Kossuth County | 95.83 |
| 26 | Ida County | 95.81 |
| 27 | Sac County | 95.71 |
| 28 | Appanoose County | 95.67 |
| 29 | Iowa County | 95.58 |
| 30 | Fremont County | 95.49 |
| 31 | Guthrie County | 95.45 |
| 32 | Bremer County | 95.37 |
| 33 | Carroll County | 95.33 |
| 34 | Winneshiek County | 95.32 |
| 35 | Monroe County | 95.29 |
| 36 | Monona County | 95.25 |
| 37 | Greene County | 95.22 |
| 38 | Shelby County | 95.16 |
| 39 | Marion County | 94.86 |
| 40 | Warren County | 94.79 |
| 41 | Calhoun County | 94.73 |
| 42 | Worth County | 94.58 |
| 43 | Boone County | 94.57 |
| 44 | Mills County | 94.54 |
| 45 | Union County | 94.34 |
| 46 | Fayette County | 94.27 |
| 47 | Montgomery County | 94.26 |
| 48 | Jones County | 94.24 |
| 48 | Palo Alto County | 94.24 |
| 49 | Jasper County | 94.18 |
| 50 | Humboldt County | 94.13 |
| 51 | Cherokee County | 93.99 |
| 52 | Clay County | 93.88 |
| 53 | Mahaska County | 93.83 |
| 54 | Hancock County | 93.74 |
| 55 | Pocahontas County | 93.47 |
| 56 | Decatur County | 93.26 |
| 57 | O'Brien County | 93.17 |
| 58 | Plymouth County | 92.92 |
| 59 | Floyd County | 92.61 |
| 60 | Hardin County | 92.33 |
| 61 | Winnebago County | 92.14 |
| 62 | Poweshiek County | 92.09 |
| 63 | Washington County | 91.67 |
| 64 | Page County | 91.52 |
| 65 | Clinton County | 91.51 |
| 66 | Allamakee County | 91.36 |
| 66 | Dubuque County | 91.36 |
| 67 | Cerro Gordo County | 91.21 |
| 68 | Lee County | 91.15 |
| 69 | Taylor County | 90.5 |
| 70 | Osceola County | 90.08 |
| 71 | Hamilton County | 89.84 |
| 72 | Henry County | 88.74 |
| 73 | Emmet County | 88.23 |
| 74 | Pottawattamie County | 88.14 |
| 75 | Des Moines County | 87.92 |
| 76 | Webster County | 87.81 |
| 77 | Sioux County | 87.63 |
| 78 | Linn County | 87.09 |
| 79 | Wright County | 86.9 |
| 80 | Dallas County | 86.3 |
| 81 | Franklin County | 86.04 |
| 82 | Clarke County | 84.86 |
| 83 | Story County | 84.43 |
| 84 | Wapello County | 84 |
| 85 | Tama County | 82.62 |
| 86 | Black Hawk County | 81.88 |
| 87 | Jefferson County | 81.04 |
| 88 | Scott County | 80.74 |
| 89 | Johnson County | 79.48 |
| 90 | Polk County | 78.7 |
| 91 | Louisa County | 78.25 |
| 92 | Muscatine County | 77.68 |
| 93 | Woodbury County | 74.78 |
| 94 | Marshall County | 72.79 |
| 95 | Crawford County | 67.6 |
| 96 | Buena Vista County | 61.75 |
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