RANKING · 2010 CENSUS · 98 SHOWN OF 98

Largest Mexican population, Iowa counties · 2010

Iowa counties ranked by the number of residents who are Mexican origin, from the 2010 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 98 counties in Iowa that qualify, ranked against each other statewide. The median across all 98 is 228.

Mexican Americans: full group profile →

IowaAll states All rankings

SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPMEXICAN POPULATIONVS –

01Polk County, IAIA516,54624,005–

02Woodbury County, IAIA106,64910,518–

03Scott County, IAIA175,2597,584–

04Marshall County, IAIA39,8905,578–

05Muscatine County, IAIA41,8535,277–

06Pottawattamie County, IAIA92,9964,448–

07Linn County, IAIA232,0283,898–

08Buena Vista County, IAIA20,4493,425–

09Black Hawk County, IAIA131,5323,367–

10Johnson County, IAIA160,0443,175–

11Crawford County, IAIA16,2372,704–

12Dallas County, IAIA118,4572,354–

13Sioux County, IAIA36,7742,234–

14Wapello County, IAIA35,2102,078–

15Louisa County, IAIA10,4161,583–

16Story County, IAIA101,2911,438–

17Cerro Gordo County, IAIA42,3721,292–

18Dubuque County, IAIA99,3811,186–

19Webster County, IAIA36,8381,135–

20Clinton County, IAIA46,0021,001–

21Des Moines County, IAIA38,077953–

22Franklin County, IAIA9,868949–

23Tama County, IAIA16,796935–

24Wright County, IAIA12,801892–

25Lee County, IAIA32,306881–

26Washington County, IAIA22,667768–

27Warren County, IAIA57,331625–

28Henry County, IAIA19,349574–

29Hamilton County, IAIA14,944558–

30Clarke County, IAIA9,574518–

31Jasper County, IAIA38,153508–

32Hardin County, IAIA16,455433–

33Boone County, IAIA26,799429–

34O'Brien County, IAIA14,220423–

35Plymouth County, IAIA25,697387–

36Page County, IAIA14,856374–

37Hancock County, IAIA10,528363–

38Emmet County, IAIA9,107362–

39Clay County, IAIA16,202361–

40Allamakee County, IAIA14,238355–

41Fayette County, IAIA19,047283–

42Jefferson County, IAIA15,291280–

43Mahaska County, IAIA21,880276–

44Montgomery County, IAIA10,002267–

45Osceola County, IAIA5,980262–

46Taylor County, IAIA5,835257–

47Carroll County, IAIA20,303254–

48Winneshiek County, IAIA19,733242–

49Humboldt County, IAIA9,409228–

50Poweshiek County, IAIA18,368226–

51Clayton County, IAIA16,845225–

52Cedar County, IAIA18,359217–

53Floyd County, IAIA14,901216–

54Benton County, IAIA26,004208–

55Cherokee County, IAIA11,369205–

56Cass County, IAIA12,960200–

57Mills County, IAIA14,793192–

58Chickasaw County, IAIA11,663188–

59Decatur County, IAIA7,655182–

60Iowa County, IAIA16,504177–

61Marion County, IAIA34,192163–

62Fremont County, IAIA6,522158–

63Sac County, IAIA9,525158–

64Lyon County, IAIA12,354153–

65Buchanan County, IAIA20,883151–

66Union County, IAIA11,829145–

67Kossuth County, IAIA14,322138–

68Winnebago County, IAIA10,251138–

69Guthrie County, IAIA10,782128–

70Madison County, IAIA17,270124–

71Worth County, IAIA7,338123–

72Dickinson County, IAIA18,077115–

73Bremer County, IAIA25,296114–

74Greene County, IAIA8,658108–

75Butler County, IAIA14,049102–

76Pocahontas County, IAIA6,819100–

77Appanoose County, IAIA12,07798–

78Monona County, IAIA8,53990–

79Adams County, IAIA3,61781–

80Jones County, IAIA21,25378–

81Palo Alto County, IAIA8,89978–

82Ida County, IAIA6,77777–

83Lucas County, IAIA8,84777–

84Howard County, IAIA9,41573–

85Mitchell County, IAIA10,65071–

86Harrison County, IAIA14,62369–

87Jackson County, IAIA19,28869–

88Keokuk County, IAIA9,79766–

89Grundy County, IAIA12,36162–

90Calhoun County, IAIA9,56256–

91Adair County, IAIA7,40352–

92Delaware County, IAIA17,67449–

93Monroe County, IAIA7,40643–

94Audubon County, IAIA5,50936–

95Ringgold County, IAIA4,64235–

96Shelby County, IAIA11,68932–

97Van Buren County, IAIA7,13130–

98Davis County, IAIA9,23015–

SHOWING 1–98 OF 98

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