Ranking of Iowa Counties By Non-Hispanic Black or African American Population in 2020
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2020, among all Iowa counties, Polk County had the highest number of people who identified their ethnicity as Non-Hispanic Black or African American (34.95K), followed by Linn County (14.17K), and Scott County (13.39K).
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 Non-Hispanic Black or African American Population in 2020
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| Rank | County | Non-Hispanic Black or African American Population |
|---|---|---|
| 1 | Polk County | 34947 |
| 2 | Linn County | 14165 |
| 3 | Scott County | 13393 |
| 4 | Black Hawk County | 12376 |
| 5 | Johnson County | 11863 |
| 6 | Woodbury County | 5137 |
| 7 | Dubuque County | 3611 |
| 8 | Dallas County | 2759 |
| 9 | Story County | 2748 |
| 10 | Des Moines County | 2389 |
| 11 | Pottawattamie County | 1654 |
| 12 | Webster County | 1633 |
| 13 | Wapello County | 1370 |
| 14 | Clinton County | 1335 |
| 15 | Muscatine County | 1199 |
| 16 | Lee County | 934 |
| 17 | Jasper County | 847 |
| 18 | Cerro Gordo County | 842 |
| 19 | Marshall County | 749 |
| 20 | Buena Vista County | 647 |
| 21 | Henry County | 590 |
| 22 | Crawford County | 518 |
| 23 | Jones County | 508 |
| 24 | Warren County | 487 |
| 25 | Plymouth County | 437 |
| 26 | Mahaska County | 408 |
| 27 | Floyd County | 390 |
| 28 | Page County | 348 |
| 29 | Jefferson County | 340 |
| 30 | Bremer County | 328 |
| 31 | Boone County | 308 |
| 32 | Marion County | 288 |
| 33 | Poweshiek County | 282 |
| 34 | Fayette County | 278 |
| 35 | Carroll County | 251 |
| 36 | Calhoun County | 238 |
| 37 | Allamakee County | 235 |
| 38 | Hardin County | 224 |
| 39 | Washington County | 218 |
| 40 | Sioux County | 197 |
| 41 | Benton County | 186 |
| 42 | Hamilton County | 165 |
| 43 | Palo Alto County | 162 |
| 44 | O'Brien County | 161 |
| 45 | Tama County | 159 |
| 46 | Union County | 155 |
| 47 | Winnebago County | 153 |
| 48 | Jackson County | 151 |
| 49 | Winneshiek County | 149 |
| 50 | Delaware County | 147 |
| 51 | Clayton County | 146 |
| 52 | Cedar County | 145 |
| 53 | Decatur County | 141 |
| 53 | Kossuth County | 141 |
| 54 | Louisa County | 132 |
| 55 | Clay County | 125 |
| 56 | Dickinson County | 123 |
| 57 | Cherokee County | 120 |
| 58 | Iowa County | 108 |
| 59 | Buchanan County | 106 |
| 60 | Shelby County | 99 |
| 61 | Wright County | 98 |
| 62 | Emmet County | 95 |
| 63 | Mills County | 91 |
| 64 | Appanoose County | 88 |
| 64 | Madison County | 88 |
| 65 | Hancock County | 85 |
| 66 | Clarke County | 79 |
| 66 | Grundy County | 79 |
| 66 | Humboldt County | 79 |
| 67 | Chickasaw County | 78 |
| 68 | Guthrie County | 70 |
| 69 | Franklin County | 67 |
| 69 | Keokuk County | 67 |
| 70 | Monroe County | 65 |
| 71 | Harrison County | 64 |
| 72 | Pocahontas County | 63 |
| 73 | Greene County | 61 |
| 73 | Howard County | 61 |
| 74 | Adair County | 57 |
| 74 | Worth County | 57 |
| 75 | Mitchell County | 56 |
| 75 | Montgomery County | 56 |
| 76 | Cass County | 55 |
| 77 | Monona County | 54 |
| 78 | Osceola County | 46 |
| 79 | Butler County | 44 |
| 80 | Fremont County | 43 |
| 81 | Audubon County | 39 |
| 82 | Sac County | 38 |
| 83 | Ida County | 37 |
| 83 | Lucas County | 37 |
| 84 | Ringgold County | 33 |
| 85 | Lyon County | 32 |
| 85 | Wayne County | 32 |
| 86 | Taylor County | 26 |
| 87 | Adams County | 22 |
| 88 | Davis County | 19 |
| 89 | Van Buren County | 14 |
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