RANKING · 2020 CENSUS · 78 SHOWN OF 78

Highest Subsaharan African population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Subsaharan African ancestry (2020 American Community Survey). A concentration measure: Subsaharan African residents as a percentage of total population. This list covers the 78 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, IAIA160,0443.5%+2.4 pts

02Polk County, IAIA516,5462.3%+1.4 pts

03Crawford County, IAIA16,2372.3%+2.0 pts

04Wapello County, IAIA35,2101.8%+1.4 pts

05Black Hawk County, IAIA131,5321.7%+0.9 pts

06Muscatine County, IAIA41,8531.7%+1.4 pts

07Buena Vista County, IAIA20,4491.5%+0.3 pts

08Jefferson County, IAIA15,2911.4%+0.7 pts

09Linn County, IAIA232,0281.3%+0.9 pts

10Woodbury County, IAIA106,6491.3%+0.5 pts

11Plymouth County, IAIA25,6971.2%+1.2 pts

12Dallas County, IAIA118,4571.1%+0.8 pts

13Jasper County, IAIA38,1531.1%+0.9 pts

14Floyd County, IAIA14,9011.0%+0.8 pts

15Story County, IAIA101,2910.9%−0.2 pts

16Palo Alto County, IAIA8,8990.8%–

17Fremont County, IAIA6,5220.8%–

18Des Moines County, IAIA38,0770.7%−1.2 pts

19Allamakee County, IAIA14,2380.7%–

20Lee County, IAIA32,3060.5%−0.1 pts

21Bremer County, IAIA25,2960.5%–

22Carroll County, IAIA20,3030.5%–

23Cedar County, IAIA18,3590.5%–

24O'Brien County, IAIA14,2200.5%–

25Monona County, IAIA8,5390.4%–

26Howard County, IAIA9,4150.4%–

27Calhoun County, IAIA9,5620.4%+0.1 pts

28Dubuque County, IAIA99,3810.4%+0.1 pts

29Webster County, IAIA36,8380.3%−1.8 pts

30Boone County, IAIA26,7990.3%−0.4 pts

31Scott County, IAIA175,2590.3%−0.3 pts

32Fayette County, IAIA19,0470.3%+0.2 pts

33Emmet County, IAIA9,1070.3%+0.0 pts

34Jones County, IAIA21,2530.3%−0.3 pts

35Louisa County, IAIA10,4160.3%+0.1 pts

36Cherokee County, IAIA11,3690.2%–

37Winneshiek County, IAIA19,7330.2%−0.3 pts

38Butler County, IAIA14,0490.2%+0.1 pts

39Clayton County, IAIA16,8450.2%−0.2 pts

40Monroe County, IAIA7,4060.2%–

41Clay County, IAIA16,2020.2%–

42Pottawattamie County, IAIA92,9960.2%+0.0 pts

43Washington County, IAIA22,6670.2%+0.1 pts

44Warren County, IAIA57,3310.2%+0.1 pts

45Van Buren County, IAIA7,1310.2%–

46Sioux County, IAIA36,7740.2%−0.6 pts

47Decatur County, IAIA7,6550.2%–

48Marion County, IAIA34,1920.2%+0.0 pts

49Mahaska County, IAIA21,8800.2%−0.3 pts

50Henry County, IAIA19,3490.2%−0.0 pts

51Hancock County, IAIA10,5280.1%–

52Poweshiek County, IAIA18,3680.1%−0.1 pts

53Cerro Gordo County, IAIA42,3720.1%−0.2 pts

54Harrison County, IAIA14,6230.1%−0.1 pts

55Marshall County, IAIA39,8900.1%−0.3 pts

56Wayne County, IAIA6,7380.1%–

57Humboldt County, IAIA9,4090.1%–

58Pocahontas County, IAIA6,8190.1%–

59Benton County, IAIA26,0040.1%+0.0 pts

60Franklin County, IAIA9,8680.1%–

61Osceola County, IAIA5,9800.1%−0.0 pts

62Keokuk County, IAIA9,7970.1%–

63Appanoose County, IAIA12,0770.1%–

64Clinton County, IAIA46,0020.1%−0.6 pts

65Greene County, IAIA8,6580.1%–

66Hamilton County, IAIA14,9440.1%+0.1 pts

67Tama County, IAIA16,7960.1%−0.0 pts

68Cass County, IAIA12,9600.1%−0.0 pts

69Page County, IAIA14,8560.1%–

70Hardin County, IAIA16,4550.1%−0.5 pts

71Buchanan County, IAIA20,8830.0%−0.0 pts

72Lyon County, IAIA12,3540.0%+0.0 pts

73Sac County, IAIA9,5250.0%–

74Kossuth County, IAIA14,3220.0%−0.0 pts

75Mills County, IAIA14,7930.0%−0.1 pts

76Iowa County, IAIA16,5040.0%−0.2 pts

77Dickinson County, IAIA18,0770.0%−0.3 pts

78Jackson County, IAIA19,2880.0%–

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