RANKING · 2000 CENSUS · 99 SHOWN OF 99

Highest Black population share, Iowa counties · 2000

Iowa counties ranked by the share of all residents who are Black or African American (2000 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 1990

01Black Hawk County, IAIA131,5327.9%+15%

02Scott County, IAIA175,2596.0%+15%

03Polk County, IAIA516,5464.8%+8%

04Des Moines County, IAIA38,0773.5%+20%

05Webster County, IAIA36,8383.3%+100%

06Johnson County, IAIA160,0442.8%+36%

07Lee County, IAIA32,3062.8%−9%

08Linn County, IAIA232,0282.5%+32%

09Woodbury County, IAIA106,6491.9%−5%

10Clinton County, IAIA46,0021.9%+34%

11Story County, IAIA101,2911.8%+8%

12Jones County, IAIA21,2531.8%+13%

13Page County, IAIA14,8561.6%+367%

14Henry County, IAIA19,3491.5%+10%

15Wapello County, IAIA35,2100.9%+10%

16Decatur County, IAIA7,6550.9%+405%

17Marshall County, IAIA39,8900.9%+105%

18Jasper County, IAIA38,1530.8%+121%

19Dubuque County, IAIA99,3810.8%+134%

20Cerro Gordo County, IAIA42,3720.8%+1%

21Pottawattamie County, IAIA92,9960.8%+41%

22Crawford County, IAIA16,2370.7%+100%

23Dallas County, IAIA118,4570.7%+366%

24Calhoun County, IAIA9,5620.7%+171%

25Muscatine County, IAIA41,8530.6%+93%

26Jefferson County, IAIA15,2910.6%−3%

27Mahaska County, IAIA21,8800.6%+155%

28Hardin County, IAIA16,4550.6%−19%

29Poweshiek County, IAIA18,3680.5%+73%

30Winneshiek County, IAIA19,7330.5%+521%

31Fayette County, IAIA19,0470.5%+120%

32Bremer County, IAIA25,2960.5%+47%

33Appanoose County, IAIA12,0770.4%−23%

34Marion County, IAIA34,1920.4%+86%

35Cherokee County, IAIA11,3690.3%−11%

36O'Brien County, IAIA14,2200.3%+1076%

37Boone County, IAIA26,7990.3%+85%

38Buena Vista County, IAIA20,4490.3%+15%

39Mills County, IAIA14,7930.3%+272%

40Washington County, IAIA22,6670.3%−28%

41Plymouth County, IAIA25,6970.3%+125%

42Worth County, IAIA7,3380.3%+165%

43Warren County, IAIA57,3310.3%+113%

44Buchanan County, IAIA20,8830.3%+5%

45Sac County, IAIA9,5250.3%+417%

46Tama County, IAIA16,7960.2%+46%

47Pocahontas County, IAIA6,8190.2%+1055%

48Emmet County, IAIA9,1070.2%+203%

49Hamilton County, IAIA14,9440.2%–

50Union County, IAIA11,8290.2%+0%

51Floyd County, IAIA14,9010.2%–

52Louisa County, IAIA10,4160.2%−74%

53Cass County, IAIA12,9600.2%+255%

54Monroe County, IAIA7,4060.2%−77%

55Benton County, IAIA26,0040.2%+343%

56Cedar County, IAIA18,3590.2%+195%

57Sioux County, IAIA36,7740.2%+145%

58Winnebago County, IAIA10,2510.2%−10%

59Mitchell County, IAIA10,6500.2%+74%

60Clay County, IAIA16,2020.2%+280%

61Carroll County, IAIA20,3030.2%+338%

62Iowa County, IAIA16,5040.2%+159%

63Davis County, IAIA9,2300.2%+81%

64Allamakee County, IAIA14,2380.1%+120%

65Clayton County, IAIA16,8450.1%+264%

66Wright County, IAIA12,8010.1%+530%

67Audubon County, IAIA5,5090.1%–

68Lucas County, IAIA8,8470.1%–

69Greene County, IAIA8,6580.1%–

70Guthrie County, IAIA10,7820.1%+35%

71Dickinson County, IAIA18,0770.1%–

72Osceola County, IAIA5,9800.1%+108%

73Howard County, IAIA9,4150.1%−32%

74Kossuth County, IAIA14,3220.1%–

75Ringgold County, IAIA4,6420.1%–

76Clarke County, IAIA9,5740.1%–

77Ida County, IAIA6,7770.1%+327%

78Shelby County, IAIA11,6890.1%+45%

79Jackson County, IAIA19,2880.1%+133%

80Lyon County, IAIA12,3540.1%–

81Palo Alto County, IAIA8,8990.1%−27%

82Madison County, IAIA17,2700.1%+167%

83Butler County, IAIA14,0490.1%+34%

84Franklin County, IAIA9,8680.1%–

85Harrison County, IAIA14,6230.1%+511%

86Grundy County, IAIA12,3610.1%+8%

87Monona County, IAIA8,5390.1%–

88Montgomery County, IAIA10,0020.1%–

89Adair County, IAIA7,4030.1%–

90Keokuk County, IAIA9,7970.1%+308%

91Humboldt County, IAIA9,4090.1%−48%

92Delaware County, IAIA17,6740.1%+194%

93Van Buren County, IAIA7,1310.1%+146%

94Wayne County, IAIA6,7380.1%–

95Hancock County, IAIA10,5280.1%–

96Chickasaw County, IAIA11,6630.1%–

97Adams County, IAIA3,6170.0%+9%

98Fremont County, IAIA6,5220.0%+54%

99Taylor County, IAIA5,8350.0%+2%

SHOWING 1–99 OF 99

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS