RANKING · 2020 CENSUS · 99 SHOWN OF 99

Highest White (non-Hispanic) population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are White, not Hispanic or Latino (2020 American Community Survey). A concentration measure: White (non-Hispanic) 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 Largest Black population

YEAR1990 2000 2010 2020 2024

Highest White (non-Hispanic) population share by state

RANKPLACESTATEPOPWHITE, NON-HISPANICVS 2000

01Butler County, IAIA14,04995.9%−3%

02Audubon County, IAIA5,50995.9%−3%

03Davis County, IAIA9,23095.9%−2%

04Wayne County, IAIA6,73895.9%−2%

05Grundy County, IAIA12,36195.6%−3%

06Delaware County, IAIA17,67495.5%−3%

07Van Buren County, IAIA7,13195.5%−3%

08Mitchell County, IAIA10,65095.4%−4%

09Ringgold County, IAIA4,64295.4%−4%

10Buchanan County, IAIA20,88395.1%−3%

11Adams County, IAIA3,61795.0%−4%

12Monroe County, IAIA7,40694.9%−3%

13Harrison County, IAIA14,62394.8%−4%

14Clayton County, IAIA16,84594.5%−4%

15Keokuk County, IAIA9,79794.4%−4%

16Lucas County, IAIA8,84794.4%−4%

17Dickinson County, IAIA18,07794.4%−4%

18Jackson County, IAIA19,28894.3%−4%

19Adair County, IAIA7,40394.3%−4%

20Benton County, IAIA26,00494.1%−4%

21Appanoose County, IAIA12,07794.1%−4%

22Howard County, IAIA9,41593.9%−5%

23Cass County, IAIA12,96093.8%−5%

24Guthrie County, IAIA10,78293.8%−4%

25Madison County, IAIA17,27093.7%−5%

26Cedar County, IAIA18,35993.7%−4%

27Bremer County, IAIA25,29693.7%−4%

28Lyon County, IAIA12,35493.6%−5%

29Ida County, IAIA6,77793.6%−5%

30Carroll County, IAIA20,30393.5%−5%

31Greene County, IAIA8,65893.4%−4%

32Sac County, IAIA9,52593.3%−5%

33Worth County, IAIA7,33893.3%−4%

34Calhoun County, IAIA9,56293.3%−4%

35Palo Alto County, IAIA8,89993.3%−5%

36Winneshiek County, IAIA19,73393.2%−4%

37Fremont County, IAIA6,52293.0%−4%

38Chickasaw County, IAIA11,66393.0%−6%

39Montgomery County, IAIA10,00293.0%−5%

40Kossuth County, IAIA14,32292.8%−6%

41Shelby County, IAIA11,68992.7%−6%

42Fayette County, IAIA19,04792.5%−5%

43Boone County, IAIA26,79992.5%−6%

44Marion County, IAIA34,19292.5%−5%

45Union County, IAIA11,82992.5%−6%

46Iowa County, IAIA16,50492.4%−6%

47Jones County, IAIA21,25392.0%−4%

48Mills County, IAIA14,79392.0%−5%

49Monona County, IAIA8,53992.0%−6%

50Humboldt County, IAIA9,40991.9%−6%

51Clay County, IAIA16,20291.7%−6%

52Decatur County, IAIA7,65591.7%−4%

53Cherokee County, IAIA11,36991.5%−6%

54Warren County, IAIA57,33191.4%−6%

55Mahaska County, IAIA21,88091.3%−6%

56Poweshiek County, IAIA18,36891.1%−5%

57Jasper County, IAIA38,15391.1%−6%

58Hancock County, IAIA10,52890.9%−6%

59Hardin County, IAIA16,45590.6%−6%

60Pocahontas County, IAIA6,81990.2%−8%

61Page County, IAIA14,85690.0%−5%

62Taylor County, IAIA5,83590.0%−6%

63Plymouth County, IAIA25,69789.3%−8%

64Lee County, IAIA32,30689.1%−4%

65Floyd County, IAIA14,90189.0%−9%

66O'Brien County, IAIA14,22088.9%−8%

67Clinton County, IAIA46,00288.7%−7%

68Winnebago County, IAIA10,25188.7%−8%

69Washington County, IAIA22,66788.4%−8%

70Allamakee County, IAIA14,23888.2%−7%

71Dubuque County, IAIA99,38188.0%−9%

72Cerro Gordo County, IAIA42,37287.7%−7%

73Emmet County, IAIA9,10786.6%−8%

74Osceola County, IAIA5,98086.3%−11%

75Henry County, IAIA19,34986.1%−9%

76Jefferson County, IAIA15,29185.7%−10%

77Webster County, IAIA36,83884.8%−8%

78Pottawattamie County, IAIA92,99684.5%−10%

79Hamilton County, IAIA14,94484.5%−12%

80Des Moines County, IAIA38,07784.2%−9%

81Sioux County, IAIA36,77483.4%−13%

82Dallas County, IAIA118,45782.0%−11%

83Linn County, IAIA232,02881.6%−12%

84Story County, IAIA101,29181.1%−10%

85Clarke County, IAIA9,57480.4%−15%

86Franklin County, IAIA9,86880.2%−14%

87Louisa County, IAIA10,41678.3%−9%

88Wright County, IAIA12,80178.1%−17%

89Tama County, IAIA16,79677.5%−13%

90Black Hawk County, IAIA131,53277.1%−12%

91Scott County, IAIA175,25977.0%−11%

92Wapello County, IAIA35,21077.0%−19%

93Muscatine County, IAIA41,85375.5%−12%

94Johnson County, IAIA160,04474.9%−16%

95Polk County, IAIA516,54673.6%−15%

96Marshall County, IAIA39,89068.4%−22%

97Woodbury County, IAIA106,64968.2%−18%

98Crawford County, IAIA16,23764.3%−28%

99Buena Vista County, IAIA20,44954.6%−33%

SHOWING 1–99 OF 99

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