Ranking of Iowa Counties By White Alone Population in 2015
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2015, among all Iowa counties, Polk County had the highest number of people who identified their race as White Alone (402.07K), followed by Linn County (197.77K), and Scott County (148.50K).
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.
You may also be interested in:
Related Topics: Iowa Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage).
See this for other years:
Ranking of Iowa Counties By White Alone Population in 2015
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| Rank | County | White Alone Population |
|---|---|---|
| 1 | Polk County | 402068 |
| 2 | Linn County | 197766 |
| 3 | Scott County | 148503 |
| 4 | Johnson County | 122195 |
| 5 | Black Hawk County | 114426 |
| 6 | Dubuque County | 90484 |
| 7 | Woodbury County | 90432 |
| 8 | Pottawattamie County | 88904 |
| 9 | Story County | 84278 |
| 10 | Dallas County | 74053 |
| 11 | Warren County | 47059 |
| 12 | Clinton County | 44772 |
| 13 | Cerro Gordo County | 41061 |
| 14 | Muscatine County | 40510 |
| 15 | Marshall County | 37148 |
| 16 | Des Moines County | 36035 |
| 17 | Jasper County | 35292 |
| 18 | Webster County | 34120 |
| 19 | Sioux County | 33693 |
| 20 | Wapello County | 33118 |
| 21 | Lee County | 32894 |
| 22 | Marion County | 31949 |
| 23 | Boone County | 25615 |
| 24 | Benton County | 25045 |
| 25 | Plymouth County | 24089 |
| 26 | Bremer County | 23928 |
| 27 | Washington County | 21484 |
| 28 | Mahaska County | 21433 |
| 29 | Buchanan County | 20644 |
| 30 | Winneshiek County | 20168 |
| 31 | Carroll County | 19873 |
| 32 | Jones County | 19594 |
| 33 | Fayette County | 19408 |
| 34 | Jackson County | 18787 |
| 35 | Henry County | 18446 |
| 36 | Cedar County | 17814 |
| 37 | Poweshiek County | 17400 |
| 38 | Clayton County | 17340 |
| 39 | Buena Vista County | 17259 |
| 40 | Delaware County | 17110 |
| 41 | Dickinson County | 16630 |
| 42 | Hardin County | 16599 |
| 43 | Clay County | 16025 |
| 44 | Iowa County | 15932 |
| 45 | Crawford County | 15819 |
| 46 | Madison County | 15325 |
| 47 | Tama County | 15193 |
| 48 | Floyd County | 15073 |
| 49 | Jefferson County | 14961 |
| 50 | Kossuth County | 14775 |
| 51 | Page County | 14590 |
| 52 | Butler County | 14569 |
| 53 | Hamilton County | 14484 |
| 54 | Mills County | 14464 |
| 55 | Harrison County | 13859 |
| 56 | O'Brien County | 13516 |
| 57 | Allamakee County | 13405 |
| 58 | Cass County | 13061 |
| 59 | Wright County | 12431 |
| 60 | Appanoose County | 12245 |
| 61 | Grundy County | 12181 |
| 62 | Union County | 12038 |
| 63 | Chickasaw County | 11940 |
| 64 | Lyon County | 11547 |
| 65 | Shelby County | 11497 |
| 66 | Cherokee County | 11137 |
| 67 | Hancock County | 10743 |
| 68 | Louisa County | 10509 |
| 69 | Mitchell County | 10475 |
| 70 | Guthrie County | 10418 |
| 71 | Winnebago County | 10182 |
| 72 | Franklin County | 9990 |
| 73 | Keokuk County | 9985 |
| 74 | Montgomery County | 9902 |
| 75 | Sac County | 9764 |
| 76 | Calhoun County | 9448 |
| 77 | Humboldt County | 9340 |
| 78 | Emmet County | 9222 |
| 79 | Howard County | 9150 |
| 80 | Clarke County | 8881 |
| 81 | Palo Alto County | 8810 |
| 82 | Greene County | 8730 |
| 83 | Davis County | 8620 |
| 84 | Monona County | 8584 |
| 85 | Lucas County | 8466 |
| 86 | Decatur County | 7775 |
| 87 | Monroe County | 7711 |
| 88 | Worth County | 7271 |
| 89 | Van Buren County | 7162 |
| 90 | Adair County | 7014 |
| 91 | Ida County | 6817 |
| 92 | Fremont County | 6745 |
| 93 | Pocahontas County | 6722 |
| 94 | Wayne County | 6224 |
| 95 | Taylor County | 6104 |
| 96 | Osceola County | 5991 |
| 97 | Audubon County | 5594 |
| 98 | Ringgold County | 4875 |
| 99 | Adams County | 3673 |