RANKING · 2024 ACS · 99 SHOWN OF 99

Highest Black population share, Iowa counties

Iowa counties ranked by the share of all residents who are Black or African American (2024 American Community Survey). A concentration measure: Black residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDHighest Asian household income Highest Black household income Highest Hispanic household income Highest White (non-Hispanic) household income Largest White (non-Hispanic) population Highest White (non-Hispanic) population share

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPBLACKVS 2000

01Black Hawk County, IAIA131,5329.1%+16%

02Johnson County, IAIA160,0447.6%+169%

03Polk County, IAIA516,5467.3%+53%

04Scott County, IAIA175,2597.1%+18%

05Linn County, IAIA232,0285.9%+132%

06Woodbury County, IAIA106,6494.9%+152%

07Des Moines County, IAIA38,0774.7%+35%

08Buena Vista County, IAIA20,4493.3%+995%

09Webster County, IAIA36,8383.3%−2%

10Clinton County, IAIA46,0023.1%+67%

11Wapello County, IAIA35,2103.0%+227%

12Dallas County, IAIA118,4573.0%+328%

13Dubuque County, IAIA99,3812.9%+253%

14Story County, IAIA101,2912.7%+50%

15Henry County, IAIA19,3492.5%+74%

16Jones County, IAIA21,2532.5%+40%

17Jefferson County, IAIA15,2912.4%+281%

18Lee County, IAIA32,3062.4%−13%

19Plymouth County, IAIA25,6972.4%+786%

20Muscatine County, IAIA41,8532.2%+242%

21Winnebago County, IAIA10,2512.0%+1013%

22Cerro Gordo County, IAIA42,3721.9%+147%

23Pottawattamie County, IAIA92,9961.8%+145%

24Allamakee County, IAIA14,2381.8%+1174%

25Montgomery County, IAIA10,0021.8%+2256%

26Page County, IAIA14,8561.7%+5%

27O'Brien County, IAIA14,2201.7%+458%

28Palo Alto County, IAIA8,8991.6%+1745%

29Calhoun County, IAIA9,5621.6%+136%

30Emmet County, IAIA9,1071.6%+573%

31Marshall County, IAIA39,8901.6%+76%

32Jasper County, IAIA38,1531.5%+85%

33Adair County, IAIA7,4031.4%+1871%

34Floyd County, IAIA14,9011.4%+517%

35Decatur County, IAIA7,6551.3%+42%

36Monroe County, IAIA7,4061.2%+500%

37Boone County, IAIA26,7991.2%+282%

38Mahaska County, IAIA21,8801.1%+79%

39Bremer County, IAIA25,2961.1%+136%

40Hardin County, IAIA16,4551.1%+83%

41Washington County, IAIA22,6671.0%+273%

42Jackson County, IAIA19,2881.0%+941%

43Cherokee County, IAIA11,3691.0%+210%

44Hamilton County, IAIA14,9441.0%+318%

45Poweshiek County, IAIA18,3680.9%+76%

46Tama County, IAIA16,7960.9%+276%

47Cass County, IAIA12,9600.9%+327%

48Louisa County, IAIA10,4160.9%+317%

49Crawford County, IAIA16,2370.9%+26%

50Howard County, IAIA9,4150.8%+655%

51Appanoose County, IAIA12,0770.8%+94%

52Worth County, IAIA7,3380.8%+202%

53Fayette County, IAIA19,0470.8%+57%

54Union County, IAIA11,8290.8%+241%

55Madison County, IAIA17,2700.7%+763%

56Kossuth County, IAIA14,3220.7%+541%

57Franklin County, IAIA9,8680.7%+700%

58Pocahontas County, IAIA6,8190.7%+175%

59Warren County, IAIA57,3310.7%+152%

60Clayton County, IAIA16,8450.6%+374%

61Buchanan County, IAIA20,8830.6%+134%

62Sioux County, IAIA36,7740.6%+228%

63Grundy County, IAIA12,3610.6%+609%

64Guthrie County, IAIA10,7820.6%+355%

65Chickasaw County, IAIA11,6630.5%+914%

66Audubon County, IAIA5,5090.5%+280%

67Osceola County, IAIA5,9800.5%+316%

68Carroll County, IAIA20,3030.5%+188%

69Sac County, IAIA9,5250.5%+81%

70Hancock County, IAIA10,5280.4%+678%

71Wright County, IAIA12,8010.4%+230%

72Van Buren County, IAIA7,1310.4%+569%

73Cedar County, IAIA18,3590.4%+124%

74Marion County, IAIA34,1920.4%+4%

75Winneshiek County, IAIA19,7330.4%−20%

76Mills County, IAIA14,7930.4%+44%

77Benton County, IAIA26,0040.4%+105%

78Ringgold County, IAIA4,6420.4%+253%

79Lyon County, IAIA12,3540.4%+278%

80Fremont County, IAIA6,5220.4%+843%

81Mitchell County, IAIA10,6500.3%+95%

82Humboldt County, IAIA9,4090.3%+395%

83Iowa County, IAIA16,5040.3%+105%

84Shelby County, IAIA11,6890.3%+218%

85Ida County, IAIA6,7770.3%+198%

86Adams County, IAIA3,6170.3%+581%

87Lucas County, IAIA8,8470.3%+125%

88Clay County, IAIA16,2020.3%+58%

89Keokuk County, IAIA9,7970.3%+273%

90Monona County, IAIA8,5390.2%+207%

91Wayne County, IAIA6,7380.2%+209%

92Taylor County, IAIA5,8350.2%+493%

93Butler County, IAIA14,0490.2%+98%

94Harrison County, IAIA14,6230.1%+48%

95Greene County, IAIA8,6580.1%−8%

96Delaware County, IAIA17,6740.1%+14%

97Clarke County, IAIA9,5740.1%−53%

98Dickinson County, IAIA18,0770.0%−73%

99Davis County, IAIA9,2300.0%−100%

SHOWING 1–99 OF 99

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES