Ranking of Iowa Counties By Black or African American Alone Population in 2018
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2018, among all Iowa counties, Polk County had the highest number of people who identified their race as Black or African American Alone (34.84K), followed by Linn County (13.71K), and Scott County (13.65K).
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 Black or African American Alone Population in 2018
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| Rank | County | Black or African American Alone Population |
|---|---|---|
| 1 | Polk County | 34838 |
| 2 | Linn County | 13711 |
| 3 | Scott County | 13648 |
| 4 | Black Hawk County | 12895 |
| 5 | Johnson County | 11630 |
| 6 | Woodbury County | 4100 |
| 7 | Dubuque County | 3461 |
| 8 | Story County | 2839 |
| 9 | Des Moines County | 2404 |
| 10 | Dallas County | 2160 |
| 11 | Webster County | 1682 |
| 12 | Pottawattamie County | 1643 |
| 13 | Wapello County | 1361 |
| 14 | Clinton County | 1345 |
| 15 | Muscatine County | 1236 |
| 16 | Lee County | 1058 |
| 17 | Marshall County | 920 |
| 18 | Jasper County | 863 |
| 19 | Cerro Gordo County | 823 |
| 20 | Buena Vista County | 692 |
| 21 | Crawford County | 657 |
| 22 | Henry County | 547 |
| 23 | Jones County | 525 |
| 24 | Warren County | 454 |
| 25 | Jefferson County | 434 |
| 26 | Mahaska County | 430 |
| 27 | Page County | 428 |
| 28 | Floyd County | 425 |
| 29 | Bremer County | 318 |
| 30 | Boone County | 316 |
| 31 | Marion County | 294 |
| 32 | Fayette County | 291 |
| 33 | Poweshiek County | 286 |
| 33 | Sioux County | 286 |
| 34 | Washington County | 274 |
| 35 | Hardin County | 269 |
| 36 | Carroll County | 254 |
| 37 | Allamakee County | 250 |
| 38 | Plymouth County | 231 |
| 39 | Calhoun County | 224 |
| 40 | Winnebago County | 181 |
| 41 | Union County | 177 |
| 42 | O'Brien County | 171 |
| 43 | Benton County | 169 |
| 44 | Kossuth County | 168 |
| 45 | Winneshiek County | 164 |
| 46 | Hamilton County | 162 |
| 46 | Tama County | 162 |
| 47 | Clayton County | 160 |
| 47 | Palo Alto County | 160 |
| 48 | Delaware County | 156 |
| 49 | Decatur County | 155 |
| 50 | Emmet County | 134 |
| 51 | Clay County | 133 |
| 52 | Cherokee County | 129 |
| 52 | Jackson County | 129 |
| 53 | Louisa County | 127 |
| 54 | Wright County | 126 |
| 55 | Shelby County | 123 |
| 56 | Clarke County | 122 |
| 57 | Buchanan County | 121 |
| 58 | Cedar County | 120 |
| 59 | Franklin County | 118 |
| 60 | Madison County | 107 |
| 61 | Hancock County | 105 |
| 61 | Mills County | 105 |
| 62 | Iowa County | 102 |
| 63 | Appanoose County | 98 |
| 63 | Chickasaw County | 98 |
| 64 | Dickinson County | 78 |
| 65 | Worth County | 69 |
| 66 | Humboldt County | 66 |
| 66 | Mitchell County | 66 |
| 67 | Grundy County | 63 |
| 68 | Cass County | 62 |
| 68 | Guthrie County | 62 |
| 68 | Harrison County | 62 |
| 68 | Pocahontas County | 62 |
| 69 | Keokuk County | 61 |
| 70 | Monroe County | 60 |
| 71 | Howard County | 56 |
| 71 | Lyon County | 56 |
| 72 | Fremont County | 54 |
| 73 | Monona County | 51 |
| 74 | Greene County | 47 |
| 74 | Montgomery County | 47 |
| 75 | Butler County | 44 |
| 75 | Osceola County | 44 |
| 76 | Ringgold County | 39 |
| 77 | Lucas County | 37 |
| 78 | Taylor County | 36 |
| 79 | Wayne County | 35 |
| 80 | Adair County | 33 |
| 81 | Ida County | 29 |
| 81 | Sac County | 29 |
| 82 | Audubon County | 28 |
| 83 | Van Buren County | 22 |
| 84 | Davis County | 17 |
| 85 | Adams County | 13 |
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