RANKING · 2010 CENSUS · 61 SHOWN OF 61

Highest Subsaharan African population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are Subsaharan African ancestry (2010 American Community Survey). A concentration measure: Subsaharan African residents as a percentage of total population. This list covers the 61 counties in Iowa that qualify, ranked against each other statewide.

Subsaharan African Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

Highest Subsaharan African population share by state

RANKPLACESTATEPOPSUBSAHARAN AFRICAN SHAREVS –

01Webster County, IAIA36,8382.1%–

02Des Moines County, IAIA38,0771.9%–

03Buena Vista County, IAIA20,4491.2%–

04Johnson County, IAIA160,0441.1%–

05Story County, IAIA101,2911.1%–

06Polk County, IAIA516,5460.9%–

07Woodbury County, IAIA106,6490.9%–

08Black Hawk County, IAIA131,5320.8%–

09Sioux County, IAIA36,7740.8%–

10Boone County, IAIA26,7990.7%–

11Lee County, IAIA32,3060.7%–

12Jefferson County, IAIA15,2910.6%–

13Jones County, IAIA21,2530.6%–

14Clinton County, IAIA46,0020.6%–

15Scott County, IAIA175,2590.6%–

16Montgomery County, IAIA10,0020.6%–

17Hardin County, IAIA16,4550.5%–

18Winneshiek County, IAIA19,7330.5%–

19Linn County, IAIA232,0280.5%–

20Wapello County, IAIA35,2100.4%–

21Marshall County, IAIA39,8900.4%–

22Mahaska County, IAIA21,8800.4%–

23Taylor County, IAIA5,8350.4%–

24Clayton County, IAIA16,8450.4%–

25Dallas County, IAIA118,4570.3%–

26Cerro Gordo County, IAIA42,3720.3%–

27Dickinson County, IAIA18,0770.3%–

28Crawford County, IAIA16,2370.3%–

29Poweshiek County, IAIA18,3680.3%–

30Calhoun County, IAIA9,5620.3%–

31Dubuque County, IAIA99,3810.3%–

32Emmet County, IAIA9,1070.3%–

33Iowa County, IAIA16,5040.2%–

34Winnebago County, IAIA10,2510.2%–

35Muscatine County, IAIA41,8530.2%–

36Floyd County, IAIA14,9010.2%–

37Ida County, IAIA6,7770.2%–

38Harrison County, IAIA14,6230.2%–

39Jasper County, IAIA38,1530.2%–

40Henry County, IAIA19,3490.2%–

41Pottawattamie County, IAIA92,9960.2%–

42Marion County, IAIA34,1920.1%–

43Louisa County, IAIA10,4160.1%–

44Fayette County, IAIA19,0470.1%–

45Chickasaw County, IAIA11,6630.1%–

46Tama County, IAIA16,7960.1%–

47Butler County, IAIA14,0490.1%–

48Osceola County, IAIA5,9800.1%–

49Warren County, IAIA57,3310.1%–

50Union County, IAIA11,8290.1%–

51Grundy County, IAIA12,3610.1%–

52Mills County, IAIA14,7930.1%–

53Worth County, IAIA7,3380.1%–

54Cass County, IAIA12,9600.1%–

55Kossuth County, IAIA14,3220.1%–

56Buchanan County, IAIA20,8830.1%–

57Benton County, IAIA26,0040.1%–

58Washington County, IAIA22,6670.0%–

59Lyon County, IAIA12,3540.0%–

60Hamilton County, IAIA14,9440.0%–

61Plymouth County, IAIA25,6970.0%–

SHOWING 1–61 OF 61

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS