RANKING · 2024 ACS · 77 SHOWN OF 77

Highest Subsaharan African population share, Iowa counties

Iowa counties ranked by the share of all residents who are Subsaharan African ancestry (2024 American Community Survey). A concentration measure: Subsaharan African residents as a percentage of total population. This list covers the 77 counties in Iowa that qualify, ranked against each other statewide.

Subsaharan African Americans: full group profile →

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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 2010

01Johnson County, IAIA160,0443.7%+2.6 pts

02Polk County, IAIA516,5463.0%+2.1 pts

03Linn County, IAIA232,0282.1%+1.6 pts

04Wapello County, IAIA35,2101.9%+1.5 pts

05Jefferson County, IAIA15,2911.8%+1.2 pts

06Dallas County, IAIA118,4571.7%+1.4 pts

07Woodbury County, IAIA106,6491.6%+0.7 pts

08Winnebago County, IAIA10,2511.5%+1.2 pts

09O'Brien County, IAIA14,2201.3%–

10Story County, IAIA101,2911.1%−0.0 pts

11Allamakee County, IAIA14,2381.1%–

12Black Hawk County, IAIA131,5321.1%+0.3 pts

13Buena Vista County, IAIA20,4491.1%−0.1 pts

14Muscatine County, IAIA41,8531.1%+0.9 pts

15Jasper County, IAIA38,1531.0%+0.9 pts

16Adair County, IAIA7,4031.0%–

17Plymouth County, IAIA25,6970.9%+0.9 pts

18Scott County, IAIA175,2590.9%+0.4 pts

19Lee County, IAIA32,3060.9%+0.2 pts

20Palo Alto County, IAIA8,8990.9%–

21Marshall County, IAIA39,8900.9%+0.4 pts

22Decatur County, IAIA7,6550.8%–

23Howard County, IAIA9,4150.8%–

24Montgomery County, IAIA10,0020.7%+0.2 pts

25Boone County, IAIA26,7990.6%−0.2 pts

26Dubuque County, IAIA99,3810.6%+0.3 pts

27Poweshiek County, IAIA18,3680.6%+0.3 pts

28Webster County, IAIA36,8380.5%−1.6 pts

29Sioux County, IAIA36,7740.5%−0.2 pts

30Buchanan County, IAIA20,8830.4%+0.4 pts

31Jones County, IAIA21,2530.4%−0.2 pts

32Fayette County, IAIA19,0470.4%+0.3 pts

33Pottawattamie County, IAIA92,9960.4%+0.3 pts

34Washington County, IAIA22,6670.4%+0.4 pts

35Tama County, IAIA16,7960.4%+0.3 pts

36Mahaska County, IAIA21,8800.4%−0.1 pts

37Emmet County, IAIA9,1070.4%+0.1 pts

38Clayton County, IAIA16,8450.4%−0.0 pts

39Warren County, IAIA57,3310.3%+0.3 pts

40Monona County, IAIA8,5390.3%–

41Appanoose County, IAIA12,0770.3%–

42Benton County, IAIA26,0040.3%+0.3 pts

43Hamilton County, IAIA14,9440.3%+0.2 pts

44Cedar County, IAIA18,3590.2%–

45Hancock County, IAIA10,5280.2%–

46Franklin County, IAIA9,8680.2%–

47Madison County, IAIA17,2700.2%–

48Bremer County, IAIA25,2960.2%–

49Dickinson County, IAIA18,0770.2%−0.1 pts

50Grundy County, IAIA12,3610.2%+0.1 pts

51Adams County, IAIA3,6170.2%–

52Des Moines County, IAIA38,0770.2%−1.7 pts

53Union County, IAIA11,8290.2%+0.1 pts

54Fremont County, IAIA6,5220.2%–

55Cerro Gordo County, IAIA42,3720.1%−0.2 pts

56Louisa County, IAIA10,4160.1%+0.0 pts

57Lyon County, IAIA12,3540.1%+0.1 pts

58Floyd County, IAIA14,9010.1%−0.1 pts

59Humboldt County, IAIA9,4090.1%–

60Calhoun County, IAIA9,5620.1%−0.1 pts

61Page County, IAIA14,8560.1%–

62Worth County, IAIA7,3380.1%+0.1 pts

63Mitchell County, IAIA10,6500.1%–

64Clinton County, IAIA46,0020.1%−0.5 pts

65Henry County, IAIA19,3490.1%−0.1 pts

66Harrison County, IAIA14,6230.1%−0.1 pts

67Hardin County, IAIA16,4550.1%−0.5 pts

68Cass County, IAIA12,9600.1%+0.0 pts

69Winneshiek County, IAIA19,7330.1%−0.4 pts

70Keokuk County, IAIA9,7970.1%–

71Mills County, IAIA14,7930.0%−0.0 pts

72Crawford County, IAIA16,2370.0%−0.2 pts

73Clarke County, IAIA9,5740.0%–

74Kossuth County, IAIA14,3220.0%−0.0 pts

75Clay County, IAIA16,2020.0%–

76Carroll County, IAIA20,3030.0%–

77Greene County, IAIA8,6580.0%–

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES