RANKING · 2024 ACS · 99 SHOWN OF 99

Largest Mexican population, Iowa counties

Iowa counties ranked by the number of residents who are Mexican origin, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

Mexican Americans: full group profile →

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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 2010

01Polk County, IAIA516,54635,389+47%

02Woodbury County, IAIA106,64914,388+37%

03Scott County, IAIA175,25910,689+41%

04Marshall County, IAIA39,8908,490+52%

05Pottawattamie County, IAIA92,9967,049+58%

06Linn County, IAIA232,0286,674+71%

07Johnson County, IAIA160,0446,166+94%

08Muscatine County, IAIA41,8536,064+15%

09Dallas County, IAIA118,4575,036+114%

10Buena Vista County, IAIA20,4494,518+32%

11Black Hawk County, IAIA131,5324,015+19%

12Sioux County, IAIA36,7743,942+76%

13Story County, IAIA101,2912,855+99%

14Wapello County, IAIA35,2102,603+25%

15Crawford County, IAIA16,2372,569−5%

16Dubuque County, IAIA99,3812,056+73%

17Cerro Gordo County, IAIA42,3721,870+45%

18Wright County, IAIA12,8011,751+96%

19Louisa County, IAIA10,4161,679+6%

20Tama County, IAIA16,7961,500+60%

21Clarke County, IAIA9,5741,421+174%

22Webster County, IAIA36,8381,304+15%

23Warren County, IAIA57,3311,281+105%

24Washington County, IAIA22,6671,261+64%

25Plymouth County, IAIA25,6971,235+219%

26Hamilton County, IAIA14,9441,151+106%

27Franklin County, IAIA9,8681,121+18%

28Des Moines County, IAIA38,077968+2%

29Lee County, IAIA32,306911+3%

30Clinton County, IAIA46,002905−10%

31Allamakee County, IAIA14,238743+109%

32Boone County, IAIA26,799686+60%

33Henry County, IAIA19,349678+18%

34Hardin County, IAIA16,455670+55%

35Emmet County, IAIA9,107585+62%

36Hancock County, IAIA10,528556+53%

37Marion County, IAIA34,192501+207%

38Osceola County, IAIA5,980495+89%

39Jasper County, IAIA38,153490−4%

40Floyd County, IAIA14,901483+124%

41Clay County, IAIA16,202465+29%

42Winnebago County, IAIA10,251459+233%

43Carroll County, IAIA20,303453+78%

44Poweshiek County, IAIA18,368447+98%

45Cedar County, IAIA18,359441+103%

46Iowa County, IAIA16,504416+135%

47Taylor County, IAIA5,835402+56%

48Union County, IAIA11,829397+174%

49Shelby County, IAIA11,689396+1138%

50Benton County, IAIA26,004390+88%

51Dickinson County, IAIA18,077385+235%

52Lyon County, IAIA12,354361+136%

53Jefferson County, IAIA15,291354+26%

54Page County, IAIA14,856346−7%

55Jones County, IAIA21,253335+329%

56Mahaska County, IAIA21,880331+20%

57Cass County, IAIA12,960313+56%

58Chickasaw County, IAIA11,663310+65%

59Humboldt County, IAIA9,409297+30%

60Buchanan County, IAIA20,883291+93%

61Fayette County, IAIA19,047289+2%

62Pocahontas County, IAIA6,819289+189%

63Ida County, IAIA6,777273+255%

64O'Brien County, IAIA14,220272−36%

65Sac County, IAIA9,525271+72%

66Cherokee County, IAIA11,369269+31%

67Madison County, IAIA17,270265+114%

68Kossuth County, IAIA14,322260+88%

69Greene County, IAIA8,658240+122%

70Bremer County, IAIA25,296234+105%

71Harrison County, IAIA14,623229+232%

72Winneshiek County, IAIA19,733222−8%

73Mills County, IAIA14,793221+15%

74Butler County, IAIA14,049215+111%

75Delaware County, IAIA17,674212+333%

76Guthrie County, IAIA10,782207+62%

77Clayton County, IAIA16,845204−9%

78Decatur County, IAIA7,655197+8%

79Keokuk County, IAIA9,797186+182%

80Adair County, IAIA7,403186+258%

81Appanoose County, IAIA12,077185+89%

82Worth County, IAIA7,338185+50%

83Fremont County, IAIA6,522182+15%

84Howard County, IAIA9,415172+136%

85Monona County, IAIA8,539165+83%

86Calhoun County, IAIA9,562162+189%

87Jackson County, IAIA19,288150+117%

88Palo Alto County, IAIA8,899146+87%

89Davis County, IAIA9,230143+853%

90Audubon County, IAIA5,509130+261%

91Grundy County, IAIA12,361127+105%

92Mitchell County, IAIA10,65088+24%

93Monroe County, IAIA7,40672+67%

94Adams County, IAIA3,61757−30%

95Van Buren County, IAIA7,13154+80%

96Lucas County, IAIA8,84752−32%

97Ringgold County, IAIA4,64251+46%

98Wayne County, IAIA6,73851–

99Montgomery County, IAIA10,00225−91%

SHOWING 1–99 OF 99

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES