RANKING · 2024 ACS · 99 SHOWN OF 99

Highest Mexican population share, Iowa counties

Iowa counties ranked by the share of all residents who are Mexican origin (2023 American Community Survey). A concentration measure: Mexican residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest Mexican population Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share Largest Dominican population

YEAR2010 2020 2024

RANKPLACESTATEPOPMEXICAN SHAREVS 2000

01Buena Vista County, IAIA20,44921.8%–

02Marshall County, IAIA39,89021.2%–

03Crawford County, IAIA16,23715.8%–

04Louisa County, IAIA10,41615.7%–

05Clarke County, IAIA9,57414.7%–

06Muscatine County, IAIA41,85314.2%–

07Wright County, IAIA12,80113.7%–

08Woodbury County, IAIA106,64913.5%–

09Franklin County, IAIA9,86811.3%–

10Sioux County, IAIA36,77410.9%–

11Tama County, IAIA16,7968.9%–

12Osceola County, IAIA5,9808.1%–

13Hamilton County, IAIA14,9447.7%–

14Pottawattamie County, IAIA92,9967.5%–

15Wapello County, IAIA35,2107.4%–

16Polk County, IAIA516,5467.0%–

17Taylor County, IAIA5,8356.9%–

18Emmet County, IAIA9,1076.3%–

19Scott County, IAIA175,2596.1%–

20Washington County, IAIA22,6675.6%–

21Allamakee County, IAIA14,2385.3%–

22Hancock County, IAIA10,5285.2%–

23Plymouth County, IAIA25,6974.8%–

24Dallas County, IAIA118,4574.7%–

25Cerro Gordo County, IAIA42,3724.4%–

26Winnebago County, IAIA10,2514.3%–

27Pocahontas County, IAIA6,8194.1%–

28Hardin County, IAIA16,4554.0%–

29Ida County, IAIA6,7774.0%–

30Johnson County, IAIA160,0443.9%–

31Webster County, IAIA36,8383.5%–

32Henry County, IAIA19,3493.4%–

33Shelby County, IAIA11,6893.4%–

34Union County, IAIA11,8293.3%–

35Floyd County, IAIA14,9013.2%–

36Humboldt County, IAIA9,4093.1%–

37Black Hawk County, IAIA131,5323.1%–

38Lyon County, IAIA12,3543.0%–

39Linn County, IAIA232,0282.9%–

40Story County, IAIA101,2912.8%–

41Clay County, IAIA16,2022.8%–

42Sac County, IAIA9,5252.8%–

43Fremont County, IAIA6,5222.8%–

44Lee County, IAIA32,3062.8%–

45Greene County, IAIA8,6582.8%–

46Chickasaw County, IAIA11,6632.6%–

47Boone County, IAIA26,7992.6%–

48Decatur County, IAIA7,6552.5%–

49Iowa County, IAIA16,5042.5%–

50Worth County, IAIA7,3382.5%–

51Des Moines County, IAIA38,0772.5%–

52Adair County, IAIA7,4032.5%–

53Poweshiek County, IAIA18,3682.4%–

54Cedar County, IAIA18,3592.4%–

55Cass County, IAIA12,9602.4%–

56Warren County, IAIA57,3312.4%–

57Audubon County, IAIA5,5092.3%–

58Cherokee County, IAIA11,3692.3%–

59Page County, IAIA14,8562.3%–

60Jefferson County, IAIA15,2912.3%–

61Carroll County, IAIA20,3032.2%–

62Dickinson County, IAIA18,0772.1%–

63Dubuque County, IAIA99,3812.1%–

64Clinton County, IAIA46,0022.0%–

65Guthrie County, IAIA10,7821.9%–

66Monona County, IAIA8,5391.9%–

67O'Brien County, IAIA14,2201.9%–

68Keokuk County, IAIA9,7971.9%–

69Howard County, IAIA9,4151.8%–

70Kossuth County, IAIA14,3221.8%–

71Calhoun County, IAIA9,5621.7%–

72Palo Alto County, IAIA8,8991.6%–

73Jones County, IAIA21,2531.6%–

74Adams County, IAIA3,6171.6%–

75Madison County, IAIA17,2701.6%–

76Harrison County, IAIA14,6231.6%–

77Davis County, IAIA9,2301.6%–

78Appanoose County, IAIA12,0771.5%–

79Mills County, IAIA14,7931.5%–

80Benton County, IAIA26,0041.5%–

81Butler County, IAIA14,0491.5%–

82Mahaska County, IAIA21,8801.5%–

83Fayette County, IAIA19,0471.5%–

84Marion County, IAIA34,1921.5%–

85Buchanan County, IAIA20,8831.4%–

86Jasper County, IAIA38,1531.3%–

87Delaware County, IAIA17,6741.2%–

88Clayton County, IAIA16,8451.2%–

89Winneshiek County, IAIA19,7331.1%–

90Ringgold County, IAIA4,6421.1%–

91Grundy County, IAIA12,3611.0%–

92Monroe County, IAIA7,4061.0%–

93Bremer County, IAIA25,2960.9%–

94Mitchell County, IAIA10,6500.8%–

95Wayne County, IAIA6,7380.8%–

96Jackson County, IAIA19,2880.8%–

97Van Buren County, IAIA7,1310.7%–

98Lucas County, IAIA8,8470.6%–

99Montgomery County, IAIA10,0020.2%–

SHOWING 1–99 OF 99

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES