RANKING · 1990 CENSUS · 99 SHOWN OF 99

Highest Hispanic population share, Iowa counties · 1990

Iowa counties ranked by the share of all residents who are Hispanic or Latino of any race (1990 American Community Survey). A concentration measure: Hispanic residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 0.4%.

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

RANKPLACESTATEPOPHISPANIC / LATINOVS –

01Muscatine County, IAIA41,8537.1%–

02Louisa County, IAIA10,4162.8%–

03Scott County, IAIA175,2592.8%–

04Woodbury County, IAIA106,6492.6%–

05Polk County, IAIA516,5462.0%–

06Lee County, IAIA32,3061.8%–

07Pottawattamie County, IAIA92,9961.7%–

08Cerro Gordo County, IAIA42,3721.7%–

09Johnson County, IAIA160,0441.2%–

10Fremont County, IAIA6,5221.1%–

11Des Moines County, IAIA38,0771.1%–

12Webster County, IAIA36,8381.0%–

13Story County, IAIA101,2911.0%–

14Worth County, IAIA7,3381.0%–

15Franklin County, IAIA9,8680.9%–

16Page County, IAIA14,8560.9%–

17Jefferson County, IAIA15,2910.9%–

18Wright County, IAIA12,8010.9%–

19Fayette County, IAIA19,0470.8%–

20Crawford County, IAIA16,2370.8%–

21Marshall County, IAIA39,8900.8%–

22Winnebago County, IAIA10,2510.8%–

23Washington County, IAIA22,6670.8%–

24Linn County, IAIA232,0280.8%–

25Hamilton County, IAIA14,9440.8%–

26Hancock County, IAIA10,5280.8%–

27Cedar County, IAIA18,3590.7%–

28Henry County, IAIA19,3490.7%–

29Warren County, IAIA57,3310.7%–

30Cass County, IAIA12,9600.7%–

31Taylor County, IAIA5,8350.7%–

32Black Hawk County, IAIA131,5320.7%–

33Dallas County, IAIA118,4570.6%–

34Floyd County, IAIA14,9010.6%–

35Marion County, IAIA34,1920.6%–

36Wapello County, IAIA35,2100.6%–

37Mahaska County, IAIA21,8800.6%–

38Hardin County, IAIA16,4550.5%–

39Buena Vista County, IAIA20,4490.5%–

40Davis County, IAIA9,2300.5%–

41Decatur County, IAIA7,6550.5%–

42Dubuque County, IAIA99,3810.5%–

43Mitchell County, IAIA10,6500.5%–

44Jasper County, IAIA38,1530.5%–

45Jones County, IAIA21,2530.5%–

46Delaware County, IAIA17,6740.4%–

47Madison County, IAIA17,2700.4%–

48Tama County, IAIA16,7960.4%–

49Clinton County, IAIA46,0020.4%–

50Osceola County, IAIA5,9800.4%–

51Buchanan County, IAIA20,8830.4%–

52Greene County, IAIA8,6580.4%–

53Shelby County, IAIA11,6890.4%–

54Bremer County, IAIA25,2960.4%–

55Calhoun County, IAIA9,5620.4%–

56Mills County, IAIA14,7930.4%–

57Sioux County, IAIA36,7740.4%–

58Ida County, IAIA6,7770.4%–

59Harrison County, IAIA14,6230.4%–

60Sac County, IAIA9,5250.3%–

61Kossuth County, IAIA14,3220.3%–

62Dickinson County, IAIA18,0770.3%–

63Emmet County, IAIA9,1070.3%–

64Boone County, IAIA26,7990.3%–

65Pocahontas County, IAIA6,8190.3%–

66Poweshiek County, IAIA18,3680.3%–

67Chickasaw County, IAIA11,6630.3%–

68Clayton County, IAIA16,8450.3%–

69Clarke County, IAIA9,5740.3%–

70Grundy County, IAIA12,3610.2%–

71Appanoose County, IAIA12,0770.2%–

72Lucas County, IAIA8,8470.2%–

73Adair County, IAIA7,4030.2%–

74Guthrie County, IAIA10,7820.2%–

75Adams County, IAIA3,6170.2%–

76Winneshiek County, IAIA19,7330.2%–

77Van Buren County, IAIA7,1310.2%–

78O'Brien County, IAIA14,2200.2%–

79Howard County, IAIA9,4150.2%–

80Cherokee County, IAIA11,3690.2%–

81Jackson County, IAIA19,2880.2%–

82Benton County, IAIA26,0040.2%–

83Union County, IAIA11,8290.2%–

84Clay County, IAIA16,2020.2%–

85Carroll County, IAIA20,3030.2%–

86Ringgold County, IAIA4,6420.2%–

87Keokuk County, IAIA9,7970.2%–

88Iowa County, IAIA16,5040.2%–

89Audubon County, IAIA5,5090.1%–

90Plymouth County, IAIA25,6970.1%–

91Allamakee County, IAIA14,2380.1%–

92Montgomery County, IAIA10,0020.1%–

93Wayne County, IAIA6,7380.1%–

94Butler County, IAIA14,0490.1%–

95Lyon County, IAIA12,3540.1%–

96Palo Alto County, IAIA8,8990.1%–

97Monona County, IAIA8,5390.1%–

98Humboldt County, IAIA9,4090.1%–

99Monroe County, IAIA7,4060.0%–

SHOWING 1–99 OF 99

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS