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 (2023 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.

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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 2000

01Johnson County, IAIA160,0443.5%–

02Polk County, IAIA516,5462.3%–

03Crawford County, IAIA16,2372.3%–

04Wapello County, IAIA35,2101.8%–

05Black Hawk County, IAIA131,5321.7%–

06Muscatine County, IAIA41,8531.7%–

07Buena Vista County, IAIA20,4491.5%–

08Jefferson County, IAIA15,2911.4%–

09Linn County, IAIA232,0281.3%–

10Woodbury County, IAIA106,6491.3%–

11Plymouth County, IAIA25,6971.2%–

12Dallas County, IAIA118,4571.1%–

13Jasper County, IAIA38,1531.1%–

14Floyd County, IAIA14,9011.0%–

15Story County, IAIA101,2910.9%–

16Palo Alto County, IAIA8,8990.8%–

17Fremont County, IAIA6,5220.8%–

18Des Moines County, IAIA38,0770.7%–

19Allamakee County, IAIA14,2380.7%–

20Lee County, IAIA32,3060.5%–

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%–

28Dubuque County, IAIA99,3810.4%–

29Webster County, IAIA36,8380.3%–

30Boone County, IAIA26,7990.3%–

31Scott County, IAIA175,2590.3%–

32Fayette County, IAIA19,0470.3%–

33Emmet County, IAIA9,1070.3%–

34Jones County, IAIA21,2530.3%–

35Louisa County, IAIA10,4160.3%–

36Cherokee County, IAIA11,3690.2%–

37Winneshiek County, IAIA19,7330.2%–

38Butler County, IAIA14,0490.2%–

39Clayton County, IAIA16,8450.2%–

40Monroe County, IAIA7,4060.2%–

41Clay County, IAIA16,2020.2%–

42Pottawattamie County, IAIA92,9960.2%–

43Washington County, IAIA22,6670.2%–

44Warren County, IAIA57,3310.2%–

45Van Buren County, IAIA7,1310.2%–

46Sioux County, IAIA36,7740.2%–

47Decatur County, IAIA7,6550.2%–

48Marion County, IAIA34,1920.2%–

49Mahaska County, IAIA21,8800.2%–

50Henry County, IAIA19,3490.2%–

51Hancock County, IAIA10,5280.1%–

52Poweshiek County, IAIA18,3680.1%–

53Cerro Gordo County, IAIA42,3720.1%–

54Harrison County, IAIA14,6230.1%–

55Marshall County, IAIA39,8900.1%–

56Wayne County, IAIA6,7380.1%–

57Humboldt County, IAIA9,4090.1%–

58Pocahontas County, IAIA6,8190.1%–

59Benton County, IAIA26,0040.1%–

60Franklin County, IAIA9,8680.1%–

61Osceola County, IAIA5,9800.1%–

62Keokuk County, IAIA9,7970.1%–

63Appanoose County, IAIA12,0770.1%–

64Clinton County, IAIA46,0020.1%–

65Greene County, IAIA8,6580.1%–

66Hamilton County, IAIA14,9440.1%–

67Tama County, IAIA16,7960.1%–

68Cass County, IAIA12,9600.1%–

69Page County, IAIA14,8560.1%–

70Hardin County, IAIA16,4550.1%–

71Buchanan County, IAIA20,8830.0%–

72Lyon County, IAIA12,3540.0%–

73Sac County, IAIA9,5250.0%–

74Kossuth County, IAIA14,3220.0%–

75Mills County, IAIA14,7930.0%–

76Iowa County, IAIA16,5040.0%–

77Dickinson County, IAIA18,0770.0%–

78Jackson County, IAIA19,2880.0%–

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES