Counties in Iowa by black or African American population share

Black Hawk County had the highest black or African American population share of 99 counties in 2022, at 9.6%. Davis County had the lowest, at 0%. The median was 0.8% and the figure for Iowa was 3.7%. Source: the U.S. Census Bureau.

Median0.899 counties
Iowa3.7History

Top 40 counties, 2022

CSVChart (SVG)

Black Hawk CountyBlack Hawk County: 9.6 %9.6Johnson CountyJohnson County: 7.3 %7.3Polk CountyPolk County: 7.1 %7.1Scott CountyScott County: 6.9 %6.9Linn CountyLinn County: 5.7 %5.7Des Moines CountyDes Moines County: 5.2 %5.2Jefferson CountyJefferson County: 4.8 %4.8Woodbury CountyWoodbury County: 4.2 %4.2Emmet CountyEmmet County: 3.5 %3.5Webster CountyWebster County: 3.4 %3.4Wapello CountyWapello County: 3 %3Clinton CountyClinton County: 3 %3Dubuque CountyDubuque County: 3 %3Buena Vista CountyBuena Vista County: 2.9 %2.9Lee CountyLee County: 2.9 %2.9Muscatine CountyMuscatine County: 2.7 %2.7Henry CountyHenry County: 2.5 %2.5Story CountyStory County: 2.4 %2.4Crawford CountyCrawford County: 2.4 %2.4Dallas CountyDallas County: 2.3 %2.3Jones CountyJones County: 2.3 %2.3Palo Alto CountyPalo Alto County: 2.1 %2.1Jasper CountyJasper County: 1.8 %1.8Plymouth CountyPlymouth County: 1.8 %1.8Allamakee CountyAllamakee County: 1.7 %1.7Marshall CountyMarshall County: 1.7 %1.7Mahaska CountyMahaska County: 1.7 %1.7Page CountyPage County: 1.5 %1.5Cerro Gordo CountyCerro Gordo County: 1.5 %1.5Pottawattamie CountyPottawattamie County: 1.5 %1.5Cherokee CountyCherokee County: 1.4 %1.4O'Brien CountyO'Brien County: 1.4 %1.4Hamilton CountyHamilton County: 1.4 %1.4Boone CountyBoone County: 1.3 %1.3Decatur CountyDecatur County: 1.3 %1.3Bremer CountyBremer County: 1.2 %1.2Calhoun CountyCalhoun County: 1.2 %1.2Poweshiek CountyPoweshiek County: 1.1 %1.1Worth CountyWorth County: 1 %1Carroll CountyCarroll County: 1 %1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2022 (%)Change on 2021
1Black Hawk County9.6+0.2 pts
2Johnson County7.3+0.3 pts
3Polk County7.1+0.1 pts
4Scott County6.9-0.1 pts
5Linn County5.7-0 pts
6Des Moines County5.2-0.7 pts
7Jefferson County4.8-1.8 pts
8Woodbury County4.2+0.5 pts
9Emmet County3.5+1.1 pts
10Webster County3.4-0.9 pts
11Wapello County3-0.3 pts
12Clinton County3+0.2 pts
13Dubuque County30 pts
14Buena Vista County2.9+0.4 pts
15Lee County2.9-0.1 pts
16Muscatine County2.7+0.2 pts
17Henry County2.5+0.1 pts
18Story County2.40 pts
19Crawford County2.4-1.2 pts
20Dallas County2.3+0.3 pts
21Jones County2.3+0.1 pts
22Palo Alto County2.1+0.6 pts
23Jasper County1.8+0.1 pts
24Plymouth County1.8+0.1 pts
25Allamakee County1.7+0.1 pts
26Marshall County1.7+0.6 pts
27Mahaska County1.7-0 pts
28Page County1.5-0.2 pts
29Cerro Gordo County1.5-0.2 pts
30Pottawattamie County1.5+0.1 pts
31Cherokee County1.40 pts
32O'Brien County1.4-0.1 pts
33Hamilton County1.4-0.1 pts
34Boone County1.3+0.1 pts
35Decatur County1.3-0.3 pts
36Bremer County1.2+0.2 pts
37Calhoun County1.2-0.4 pts
38Poweshiek County1.1-0.2 pts
39Worth County1+0.4 pts
40Carroll County1+0.7 pts
41Tama County1+0.1 pts
42Floyd County0.9-0.6 pts
42Osceola County0.9+0.3 pts
44Shelby County0.9-0.1 pts
45Fayette County0.8-0.6 pts
45Grundy County0.8+0.1 pts
47Hancock County0.8-0.3 pts
47Kossuth County0.8+0.4 pts
49Winneshiek County0.8-0.1 pts
50Buchanan County0.8+0.1 pts
50Chickasaw County0.8+0.2 pts
52Ida County0.8-0.6 pts
53Madison County0.8+0.1 pts
54Cass County0.80 pts
55Warren County0.7-0 pts
56Adair County0.6+0.1 pts
56Jackson County0.6+0.1 pts
58Keokuk County0.6+0.1 pts
59Clay County0.6+0.4 pts
60Marion County0.6-0.4 pts
61Hardin County0.6-0.5 pts
61Louisa County0.6-0.1 pts
61Mitchell County0.6+0.1 pts
61Winnebago County0.6-0.1 pts
65Franklin County0.5-0 pts
66Fremont County0.5+0.1 pts
67Butler County0.5-0 pts
67Sioux County0.5+0.1 pts
69Cedar County0.5-0.1 pts
69Guthrie County0.5+0.1 pts
71Montgomery County0.5+0.4 pts
72Van Buren County0.4+0.1 pts
73Appanoose County0.4+0.2 pts
74Iowa County0.4-0 pts
74Washington County0.4-0.2 pts
76Union County0.4-0 pts
77Benton County0.4+0.1 pts
77Clayton County0.4+0.1 pts
77Humboldt County0.4+0.2 pts
80Lucas County0.3+0.1 pts
81Adams County0.3+0.2 pts
81Audubon County0.3-0.2 pts
81Monona County0.3+0.1 pts
81Sac County0.3-0.5 pts
85Wayne County0.3-0.1 pts
86Mills County0.3-0.1 pts
87Greene County0.2+0.1 pts
88Lyon County0.2+0.1 pts
89Howard County0.2-0.1 pts
90Harrison County0.20 pts
90Pocahontas County0.2-0.2 pts
90Wright County0.2-0.1 pts
93Monroe County0.2+0.1 pts
94Ringgold County0.1+0.1 pts
95Dickinson County0.10 pts
95Taylor County0.1+0.1 pts
97Clarke County0-0 pts
98Delaware County0-0.1 pts
99Davis County00 pts

Other periods

About this ranking

People who are not Hispanic or Latino and report Black or African American as their only race, as a percentage of the total population. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

US federal statistics ask about Hispanic origin and race separately, and Hispanic or Latino people can be of any race. The shares for White, Black and Asian count people who are not Hispanic and report that race alone, so the published shares do not add up to 100 (people of two or more races and other races are not shown). Calculated from counts in ACS table B03002, which are stored as inputs. EU and Spanish statistics do not collect race.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B03002: Black or African American alone, not Hispanic or Latino, as a percentage of the total population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b03002.dat. Retrieved 2026-10-09.

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Questions

Which county has the highest black or African American population share?

Black Hawk County, with 9.6% in 2022, according to the U.S. Census Bureau.

Which county has the lowest black or African American population share?

Davis County, with 0% in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B03002: Black or African American alone, not Hispanic or Latino, as a percentage of the total population, calculated with stored inputs. Retrieved 2026-10-09.

Black or African American population share: other rankings

Counties in Iowa: more rankings