Ranking of Iowa Counties By Percentage of Population with Subsaharan African Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 35.41K people in Iowa with Subsaharan African ancestry (1.11% of Iowa population). Among all Iowa counties, Johnson County had the highest percentage of its population with Subsaharan African ancestry (3.72%), followed by Crawford County (3.09%), and Polk County (2.65%).
The chart and table below shows the top 10 counties with high percentage of its population having Subsaharan African ancestry.
You can see similar information for other states and for other ancestry groups in Iowa.
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Related Topics: Iowa ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Iowa Counties By Percentage of Population with Subsaharan African Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Johnson County | 3.72 |
| 2 | Crawford County | 3.09 |
| 3 | Polk County | 2.65 |
| 4 | Jefferson County | 2.10 |
| 5 | Wapello County | 1.86 |
| 6 | Linn County | 1.69 |
| 7 | Woodbury County | 1.52 |
| 8 | Black Hawk County | 1.41 |
| 9 | Dallas County | 1.26 |
| 10 | Allamakee County | 1.24 |
| 11 | Jasper County | 1.22 |
| 12 | Muscatine County | 1.19 |
| 13 | Buena Vista County | 1.06 |
| 14 | Floyd County | 1.05 |
| 15 | Plymouth County | 0.98 |
| 16 | O'Brien County | 0.95 |
| 17 | Story County | 0.94 |
| 18 | Lee County | 0.75 |
| 19 | Jones County | 0.73 |
| 20 | Palo Alto County | 0.67 |
| 21 | Poweshiek County | 0.66 |
| 22 | Des Moines County | 0.51 |
| 23 | Buchanan County | 0.48 |
| 23 | Scott County | 0.48 |
| 24 | Boone County | 0.46 |
| 25 | Bremer County | 0.45 |
| 26 | Dubuque County | 0.42 |
| 26 | Louisa County | 0.42 |
| 27 | Henry County | 0.35 |
| 28 | Webster County | 0.34 |
| 29 | Marshall County | 0.33 |
| 29 | Monona County | 0.33 |
| 30 | Decatur County | 0.30 |
| 31 | Cedar County | 0.28 |
| 31 | Emmet County | 0.28 |
| 31 | Fayette County | 0.28 |
| 31 | Howard County | 0.28 |
| 32 | Marion County | 0.26 |
| 32 | Monroe County | 0.26 |
| 32 | Pottawattamie County | 0.26 |
| 33 | Butler County | 0.24 |
| 33 | Carroll County | 0.24 |
| 33 | Winneshiek County | 0.24 |
| 34 | Cherokee County | 0.20 |
| 35 | Clarke County | 0.19 |
| 36 | Hancock County | 0.18 |
| 37 | Van Buren County | 0.17 |
| 38 | Warren County | 0.16 |
| 39 | Fremont County | 0.15 |
| 40 | Appanoose County | 0.14 |
| 41 | Clayton County | 0.13 |
| 41 | Grundy County | 0.13 |
| 41 | Union County | 0.13 |
| 42 | Wayne County | 0.12 |
| 43 | Adams County | 0.11 |
| 43 | Keokuk County | 0.11 |
| 43 | Mahaska County | 0.11 |
| 43 | Washington County | 0.11 |
| 44 | Calhoun County | 0.10 |
| 44 | Harrison County | 0.10 |
| 44 | Osceola County | 0.10 |
| 44 | Sioux County | 0.10 |
| 45 | Pocahontas County | 0.09 |
| 46 | Cass County | 0.08 |
| 46 | Page County | 0.08 |
| 46 | Tama County | 0.08 |
| 47 | Cerro Gordo County | 0.06 |
| 48 | Greene County | 0.05 |
| 48 | Hardin County | 0.05 |
| 48 | Kossuth County | 0.05 |
| 49 | Benton County | 0.04 |
| 49 | Hamilton County | 0.04 |
| 49 | Humboldt County | 0.04 |
| 50 | Clinton County | 0.03 |
| 50 | Lyon County | 0.03 |
| 51 | Clay County | 0.02 |
| 51 | Mills County | 0.02 |
| 51 | Sac County | 0.02 |
| 52 | Dickinson County | 0.01 |
| 52 | Iowa County | 0.01 |
| 52 | Jackson County | 0.01 |
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