RANKING · 1990 CENSUS · 99 SHOWN OF 99

Highest White (non-Hispanic) population share, Iowa counties · 1990

Iowa counties ranked by the share of all residents who are White, not Hispanic or Latino (1990 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 –

01Chickasaw County, IAIA11,663100.0%–

02Van Buren County, IAIA7,13199.9%–

03Montgomery County, IAIA10,00299.8%–

04Mitchell County, IAIA10,65099.8%–

05Allamakee County, IAIA14,23899.7%–

06Audubon County, IAIA5,50999.7%–

07Butler County, IAIA14,04999.7%–

08Carroll County, IAIA20,30399.7%–

09Howard County, IAIA9,41599.7%–

10Cass County, IAIA12,96099.6%–

11Iowa County, IAIA16,50499.6%–

12Emmet County, IAIA9,10799.6%–

13Plymouth County, IAIA25,69799.6%–

14Wayne County, IAIA6,73899.6%–

15Adams County, IAIA3,61799.6%–

16Guthrie County, IAIA10,78299.6%–

17Clayton County, IAIA16,84599.6%–

18Jackson County, IAIA19,28899.6%–

19Grundy County, IAIA12,36199.6%–

20Humboldt County, IAIA9,40999.6%–

21Harrison County, IAIA14,62399.6%–

22Dickinson County, IAIA18,07799.6%–

23Delaware County, IAIA17,67499.6%–

24Kossuth County, IAIA14,32299.5%–

25Adair County, IAIA7,40399.5%–

26Mills County, IAIA14,79399.5%–

27Pocahontas County, IAIA6,81999.5%–

28Shelby County, IAIA11,68999.5%–

29Lyon County, IAIA12,35499.5%–

30Wright County, IAIA12,80199.5%–

31Sac County, IAIA9,52599.5%–

32Palo Alto County, IAIA8,89999.5%–

33Ida County, IAIA6,77799.5%–

34Benton County, IAIA26,00499.4%–

35Floyd County, IAIA14,90199.4%–

36Clarke County, IAIA9,57499.4%–

37Keokuk County, IAIA9,79799.4%–

38Dallas County, IAIA118,45799.4%–

39Buchanan County, IAIA20,88399.4%–

40Madison County, IAIA17,27099.4%–

41Greene County, IAIA8,65899.4%–

42Franklin County, IAIA9,86899.4%–

43Davis County, IAIA9,23099.3%–

44Taylor County, IAIA5,83599.3%–

45Calhoun County, IAIA9,56299.3%–

46Clay County, IAIA16,20299.3%–

47O'Brien County, IAIA14,22099.3%–

48Boone County, IAIA26,79999.3%–

49Cedar County, IAIA18,35999.3%–

50Worth County, IAIA7,33899.2%–

51Osceola County, IAIA5,98099.2%–

52Monona County, IAIA8,53999.2%–

53Page County, IAIA14,85699.2%–

54Warren County, IAIA57,33199.2%–

55Bremer County, IAIA25,29699.2%–

56Ringgold County, IAIA4,64299.1%–

57Union County, IAIA11,82999.1%–

58Hamilton County, IAIA14,94499.1%–

59Decatur County, IAIA7,65599.1%–

60Fremont County, IAIA6,52299.1%–

61Hancock County, IAIA10,52899.1%–

62Lucas County, IAIA8,84799.1%–

63Sioux County, IAIA36,77499.0%–

64Washington County, IAIA22,66799.0%–

65Fayette County, IAIA19,04799.0%–

66Mahaska County, IAIA21,88098.9%–

67Cherokee County, IAIA11,36998.9%–

68Dubuque County, IAIA99,38198.9%–

69Winneshiek County, IAIA19,73398.9%–

70Jasper County, IAIA38,15398.9%–

71Appanoose County, IAIA12,07798.8%–

72Crawford County, IAIA16,23798.8%–

73Marion County, IAIA34,19298.8%–

74Poweshiek County, IAIA18,36898.6%–

75Hardin County, IAIA16,45598.6%–

76Pottawattamie County, IAIA92,99698.4%–

77Jefferson County, IAIA15,29198.4%–

78Winnebago County, IAIA10,25198.3%–

79Monroe County, IAIA7,40698.2%–

80Cerro Gordo County, IAIA42,37298.1%–

81Wapello County, IAIA35,21098.0%–

82Marshall County, IAIA39,89097.9%–

83Clinton County, IAIA46,00297.9%–

84Jones County, IAIA21,25397.8%–

85Buena Vista County, IAIA20,44997.5%–

86Webster County, IAIA36,83897.3%–

87Henry County, IAIA19,34997.2%–

88Louisa County, IAIA10,41696.8%–

89Linn County, IAIA232,02896.8%–

90Des Moines County, IAIA38,07795.9%–

91Lee County, IAIA32,30695.8%–

92Muscatine County, IAIA41,85394.9%–

93Tama County, IAIA16,79694.2%–

94Woodbury County, IAIA106,64993.7%–

95Johnson County, IAIA160,04493.5%–

96Story County, IAIA101,29193.2%–

97Polk County, IAIA516,54692.8%–

98Scott County, IAIA175,25992.4%–

99Black Hawk County, IAIA131,53291.9%–

SHOWING 1–99 OF 99

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