Ranking of Iowa Counties By White Alone Population in 2021
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2021, among all Iowa counties, Polk County had the highest number of people who identified their race as White Alone (418.83K), followed by Linn County (200.51K), and Scott County (148.09K).
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 White Alone Population in 2021
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| Rank | County | White Alone Population |
|---|---|---|
| 1 | Polk County | 418833 |
| 2 | Linn County | 200509 |
| 3 | Scott County | 148089 |
| 4 | Johnson County | 127694 |
| 5 | Black Hawk County | 109396 |
| 6 | Dallas County | 92830 |
| 7 | Dubuque County | 90985 |
| 8 | Woodbury County | 89589 |
| 9 | Pottawattamie County | 87685 |
| 10 | Story County | 86490 |
| 11 | Warren County | 51371 |
| 12 | Clinton County | 43318 |
| 13 | Cerro Gordo County | 40201 |
| 14 | Muscatine County | 39767 |
| 15 | Marshall County | 36118 |
| 16 | Jasper County | 36006 |
| 17 | Sioux County | 34744 |
| 18 | Des Moines County | 34283 |
| 19 | Webster County | 33660 |
| 20 | Marion County | 32098 |
| 21 | Wapello County | 31406 |
| 22 | Lee County | 31143 |
| 23 | Boone County | 25785 |
| 24 | Benton County | 24979 |
| 25 | Plymouth County | 24306 |
| 26 | Bremer County | 24052 |
| 27 | Washington County | 21659 |
| 28 | Mahaska County | 20796 |
| 29 | Buchanan County | 20128 |
| 30 | Carroll County | 20077 |
| 31 | Jones County | 19841 |
| 32 | Winneshiek County | 19315 |
| 33 | Henry County | 18777 |
| 34 | Jackson County | 18681 |
| 35 | Fayette County | 18425 |
| 36 | Cedar County | 17816 |
| 37 | Poweshiek County | 17554 |
| 38 | Dickinson County | 17271 |
| 39 | Delaware County | 17134 |
| 40 | Buena Vista County | 16751 |
| 41 | Clayton County | 16580 |
| 42 | Madison County | 16241 |
| 43 | Iowa County | 16129 |
| 44 | Hardin County | 15975 |
| 45 | Clay County | 15842 |
| 46 | Crawford County | 14733 |
| 47 | Tama County | 14696 |
| 48 | Floyd County | 14526 |
| 49 | Harrison County | 14300 |
| 50 | Page County | 14266 |
| 51 | Kossuth County | 14012 |
| 52 | Mills County | 13982 |
| 53 | Butler County | 13945 |
| 54 | Hamilton County | 13913 |
| 55 | Jefferson County | 13797 |
| 56 | O'Brien County | 13458 |
| 57 | Allamakee County | 13376 |
| 58 | Cass County | 12621 |
| 59 | Wright County | 12241 |
| 60 | Grundy County | 12076 |
| 61 | Appanoose County | 11799 |
| 62 | Lyon County | 11687 |
| 63 | Chickasaw County | 11611 |
| 64 | Union County | 11582 |
| 65 | Shelby County | 11343 |
| 66 | Cherokee County | 11113 |
| 67 | Hancock County | 10365 |
| 68 | Mitchell County | 10330 |
| 69 | Guthrie County | 10286 |
| 70 | Winnebago County | 10153 |
| 71 | Montgomery County | 9997 |
| 72 | Louisa County | 9956 |
| 73 | Keokuk County | 9629 |
| 74 | Franklin County | 9498 |
| 75 | Sac County | 9486 |
| 76 | Calhoun County | 9431 |
| 77 | Humboldt County | 9306 |
| 78 | Clarke County | 9244 |
| 79 | Howard County | 9189 |
| 80 | Davis County | 8961 |
| 81 | Emmet County | 8800 |
| 82 | Palo Alto County | 8511 |
| 83 | Lucas County | 8468 |
| 84 | Greene County | 8432 |
| 85 | Monona County | 8221 |
| 86 | Monroe County | 7344 |
| 87 | Adair County | 7299 |
| 88 | Decatur County | 7254 |
| 89 | Worth County | 7125 |
| 90 | Van Buren County | 7087 |
| 91 | Ida County | 6762 |
| 92 | Pocahontas County | 6718 |
| 93 | Fremont County | 6357 |
| 94 | Wayne County | 6347 |
| 95 | Osceola County | 5895 |
| 96 | Taylor County | 5707 |
| 97 | Audubon County | 5484 |
| 98 | Ringgold County | 4492 |
| 99 | Adams County | 3524 |
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