Ranking of Iowa Counties By Percentage of Population that are Non-Hispanic Black or African American in 2018
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2018, among all Iowa counties, Black Hawk County had the highest percentage of its population who identified their ethnicity as Non-Hispanic Black or African American (9.54%), followed by Scott County (7.49%), and Johnson County (7.43%).
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 Black or African American in 2018
Items per page:
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| Rank | County | % of County Population |
|---|---|---|
| 1 | Black Hawk County | 9.54 |
| 2 | Scott County | 7.49 |
| 3 | Johnson County | 7.43 |
| 4 | Polk County | 6.95 |
| 5 | Des Moines County | 5.96 |
| 6 | Linn County | 5.88 |
| 7 | Webster County | 4.36 |
| 8 | Woodbury County | 3.71 |
| 9 | Wapello County | 3.65 |
| 10 | Dubuque County | 3.46 |
| 11 | Crawford County | 3.44 |
| 12 | Buena Vista County | 3.04 |
| 13 | Lee County | 2.99 |
| 14 | Clinton County | 2.78 |
| 15 | Story County | 2.74 |
| 16 | Page County | 2.72 |
| 17 | Floyd County | 2.62 |
| 18 | Henry County | 2.57 |
| 19 | Jones County | 2.51 |
| 20 | Muscatine County | 2.45 |
| 21 | Calhoun County | 2.3 |
| 22 | Dallas County | 2.25 |
| 23 | Jefferson County | 2.24 |
| 24 | Jasper County | 2.22 |
| 25 | Marshall County | 1.99 |
| 26 | Mahaska County | 1.87 |
| 27 | Decatur County | 1.82 |
| 28 | Cerro Gordo County | 1.78 |
| 29 | Allamakee County | 1.73 |
| 30 | Palo Alto County | 1.66 |
| 31 | Pottawattamie County | 1.6 |
| 32 | Hardin County | 1.52 |
| 33 | Winnebago County | 1.49 |
| 34 | Fayette County | 1.45 |
| 35 | Poweshiek County | 1.43 |
| 36 | Union County | 1.32 |
| 37 | Emmet County | 1.24 |
| 38 | Bremer County | 1.22 |
| 39 | Boone County | 1.15 |
| 40 | Carroll County | 1.12 |
| 41 | Cherokee County | 1.06 |
| 42 | Kossuth County | 1.05 |
| 43 | Washington County | 1.04 |
| 44 | Clarke County | 1.01 |
| 45 | Louisa County | 0.98 |
| 46 | O'Brien County | 0.91 |
| 47 | Delaware County | 0.87 |
| 48 | Hamilton County | 0.85 |
| 48 | Plymouth County | 0.85 |
| 49 | Clayton County | 0.84 |
| 49 | Marion County | 0.84 |
| 49 | Warren County | 0.84 |
| 50 | Pocahontas County | 0.82 |
| 51 | Hancock County | 0.81 |
| 52 | Tama County | 0.8 |
| 53 | Ringgold County | 0.79 |
| 54 | Worth County | 0.76 |
| 55 | Clay County | 0.75 |
| 55 | Shelby County | 0.75 |
| 55 | Winneshiek County | 0.75 |
| 56 | Monroe County | 0.69 |
| 56 | Wright County | 0.69 |
| 57 | Franklin County | 0.68 |
| 58 | Appanoose County | 0.66 |
| 59 | Fremont County | 0.65 |
| 60 | Mills County | 0.63 |
| 61 | Cedar County | 0.61 |
| 61 | Humboldt County | 0.61 |
| 62 | Mitchell County | 0.6 |
| 63 | Chickasaw County | 0.59 |
| 63 | Jackson County | 0.59 |
| 64 | Benton County | 0.57 |
| 64 | Howard County | 0.57 |
| 64 | Keokuk County | 0.57 |
| 64 | Monona County | 0.57 |
| 65 | Iowa County | 0.56 |
| 66 | Sioux County | 0.55 |
| 67 | Guthrie County | 0.54 |
| 67 | Madison County | 0.54 |
| 68 | Buchanan County | 0.51 |
| 69 | Osceola County | 0.5 |
| 70 | Adair County | 0.46 |
| 70 | Montgomery County | 0.46 |
| 70 | Wayne County | 0.46 |
| 71 | Dickinson County | 0.45 |
| 72 | Grundy County | 0.43 |
| 73 | Cass County | 0.42 |
| 73 | Greene County | 0.42 |
| 74 | Harrison County | 0.41 |
| 75 | Ida County | 0.4 |
| 76 | Audubon County | 0.38 |
| 77 | Taylor County | 0.36 |
| 78 | Lucas County | 0.34 |
| 79 | Adams County | 0.33 |
| 80 | Lyon County | 0.32 |
| 81 | Van Buren County | 0.3 |
| 82 | Sac County | 0.29 |
| 83 | Butler County | 0.26 |
| 84 | Davis County | 0.17 |