RANKING · 2010 CENSUS · 98 SHOWN OF 98

Highest Mexican population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are Mexican origin (2010 American Community Survey). A concentration measure: Mexican residents as a percentage of total population. This list covers the 98 counties in Iowa that qualify, ranked against each other statewide. The median across all 98 is 1.5%.

Mexican Americans: full group profile →

IowaAll states All rankings

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 –

01Buena Vista County, IAIA20,44917.1%–

02Crawford County, IAIA16,23716.0%–

03Marshall County, IAIA39,89013.9%–

04Louisa County, IAIA10,41613.5%–

05Muscatine County, IAIA41,85312.4%–

06Woodbury County, IAIA106,64910.4%–

07Franklin County, IAIA9,8688.9%–

08Sioux County, IAIA36,7746.7%–

09Wright County, IAIA12,8016.7%–

10Wapello County, IAIA35,2105.8%–

11Polk County, IAIA516,5465.7%–

12Clarke County, IAIA9,5745.6%–

13Tama County, IAIA16,7965.2%–

14Pottawattamie County, IAIA92,9964.8%–

15Scott County, IAIA175,2594.7%–

16Taylor County, IAIA5,8354.0%–

17Osceola County, IAIA5,9804.0%–

18Dallas County, IAIA118,4573.8%–

19Washington County, IAIA22,6673.6%–

20Hamilton County, IAIA14,9443.5%–

21Emmet County, IAIA9,1073.5%–

22Hancock County, IAIA10,5283.2%–

23Webster County, IAIA36,8383.0%–

24O'Brien County, IAIA14,2202.9%–

25Cerro Gordo County, IAIA42,3722.9%–

26Henry County, IAIA19,3492.8%–

27Black Hawk County, IAIA131,5322.6%–

28Johnson County, IAIA160,0442.5%–

29Allamakee County, IAIA14,2382.5%–

30Montgomery County, IAIA10,0022.4%–

31Hardin County, IAIA16,4552.4%–

32Lee County, IAIA32,3062.4%–

33Des Moines County, IAIA38,0772.4%–

34Page County, IAIA14,8562.3%–

35Humboldt County, IAIA9,4092.3%–

36Clay County, IAIA16,2022.2%–

37Decatur County, IAIA7,6552.1%–

38Fremont County, IAIA6,5222.1%–

39Clinton County, IAIA46,0022.0%–

40Adams County, IAIA3,6172.0%–

41Linn County, IAIA232,0281.9%–

42Cherokee County, IAIA11,3691.7%–

43Jefferson County, IAIA15,2911.7%–

44Story County, IAIA101,2911.6%–

45Boone County, IAIA26,7991.6%–

46Worth County, IAIA7,3381.6%–

47Plymouth County, IAIA25,6971.6%–

48Sac County, IAIA9,5251.5%–

49Chickasaw County, IAIA11,6631.5%–

50Cass County, IAIA12,9601.4%–

51Warren County, IAIA57,3311.4%–

52Jasper County, IAIA38,1531.4%–

53Fayette County, IAIA19,0471.3%–

54Pocahontas County, IAIA6,8191.3%–

55Lyon County, IAIA12,3541.3%–

56Floyd County, IAIA14,9011.3%–

57Dubuque County, IAIA99,3811.3%–

58Mills County, IAIA14,7931.3%–

59Winnebago County, IAIA10,2511.3%–

60Clayton County, IAIA16,8451.2%–

61Mahaska County, IAIA21,8801.2%–

62Carroll County, IAIA20,3031.2%–

63Poweshiek County, IAIA18,3681.2%–

64Cedar County, IAIA18,3591.2%–

65Union County, IAIA11,8291.2%–

66Guthrie County, IAIA10,7821.2%–

67Winneshiek County, IAIA19,7331.2%–

68Greene County, IAIA8,6581.1%–

69Iowa County, IAIA16,5041.1%–

70Ida County, IAIA6,7771.1%–

71Monona County, IAIA8,5391.0%–

72Kossuth County, IAIA14,3220.9%–

73Lucas County, IAIA8,8470.8%–

74Palo Alto County, IAIA8,8990.8%–

75Madison County, IAIA17,2700.8%–

76Benton County, IAIA26,0040.8%–

77Howard County, IAIA9,4150.8%–

78Appanoose County, IAIA12,0770.8%–

79Buchanan County, IAIA20,8830.7%–

80Dickinson County, IAIA18,0770.7%–

81Butler County, IAIA14,0490.7%–

82Ringgold County, IAIA4,6420.7%–

83Adair County, IAIA7,4030.7%–

84Mitchell County, IAIA10,6500.7%–

85Keokuk County, IAIA9,7970.6%–

86Audubon County, IAIA5,5090.6%–

87Calhoun County, IAIA9,5620.6%–

88Monroe County, IAIA7,4060.5%–

89Grundy County, IAIA12,3610.5%–

90Marion County, IAIA34,1920.5%–

91Bremer County, IAIA25,2960.5%–

92Harrison County, IAIA14,6230.5%–

93Van Buren County, IAIA7,1310.4%–

94Jones County, IAIA21,2530.4%–

95Jackson County, IAIA19,2880.3%–

96Delaware County, IAIA17,6740.3%–

97Shelby County, IAIA11,6890.3%–

98Davis County, IAIA9,2300.2%–

SHOWING 1–98 OF 98

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