RANKING · 2020 CENSUS · 102 SHOWN OF 102

Highest Mexican population share, Illinois counties · 2020

Illinois 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 102 counties in Illinois that qualify, ranked against each other statewide.

IllinoisAll 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 2000

01Kane County, ILIL525,75727.2%–

02Boone County, ILIL53,56819.8%–

03Cook County, ILIL5,194,62519.4%–

04Lake County, ILIL719,33917.5%–

05Kendall County, ILIL145,47016.0%–

06Will County, ILIL712,25314.8%–

07Cass County, ILIL12,46314.7%–

08Rock Island County, ILIL141,86911.3%–

09Winnebago County, ILIL283,67410.9%–

10DuPage County, ILIL934,29810.8%–

11McHenry County, ILIL317,75110.3%–

12Whiteside County, ILIL54,1219.7%–

13Kankakee County, ILIL105,5259.6%–

14Ogle County, ILIL51,3999.2%–

15DeKalb County, ILIL101,8358.8%–

16Grundy County, ILIL54,0528.7%–

17Warren County, ILIL16,2228.6%–

18Bureau County, ILIL32,5108.5%–

19LaSalle County, ILIL107,7738.4%–

20Douglas County, ILIL19,8806.6%–

21Iroquois County, ILIL26,1506.0%–

22Putnam County, ILIL5,6195.5%–

23Henry County, ILIL48,0955.2%–

24Lee County, ILIL32,9145.1%–

25Brown County, ILIL6,4015.0%–

26Union County, ILIL16,6564.4%–

27Knox County, ILIL47,7674.4%–

28Vermilion County, ILIL71,2594.2%–

29Champaign County, ILIL209,9723.9%–

30Livingston County, ILIL35,0573.5%–

31Peoria County, ILIL178,5533.4%–

32Stephenson County, ILIL43,2203.4%–

33McLean County, ILIL171,4193.4%–

34Jackson County, ILIL52,5012.9%–

35Ford County, ILIL13,2162.9%–

36St. Clair County, ILIL250,7082.9%–

37Marshall County, ILIL11,4732.9%–

38Randolph County, ILIL29,9212.8%–

39Jo Daviess County, ILIL21,5942.8%–

40Clinton County, ILIL37,1282.8%–

41Johnson County, ILIL13,3632.7%–

42Perry County, ILIL20,1602.6%–

43Madison County, ILIL263,1102.6%–

44Massac County, ILIL13,5022.5%–

45Bond County, ILIL16,9592.4%–

46Carroll County, ILIL15,4192.3%–

47Williamson County, ILIL67,2252.2%–

48McDonough County, ILIL25,9162.2%–

49De Witt County, ILIL15,1182.2%–

50Coles County, ILIL46,6072.1%–

51Logan County, ILIL27,1822.1%–

52Mercer County, ILIL15,2292.0%–

53Lawrence County, ILIL13,7901.9%–

54Stark County, ILIL5,3191.8%–

55Effingham County, ILIL34,5191.8%–

56Tazewell County, ILIL130,0491.8%–

57Pulaski County, ILIL4,8201.8%–

58Fulton County, ILIL32,9011.7%–

59Morgan County, ILIL32,5151.7%–

60Wabash County, ILIL10,9071.7%–

61Jefferson County, ILIL36,1471.6%–

62Clark County, ILIL15,1141.6%–

63Monroe County, ILIL34,8401.5%–

64Macon County, ILIL99,3001.5%–

65Fayette County, ILIL20,7901.4%–

66Henderson County, ILIL5,9841.4%–

67Marion County, ILIL36,3821.4%–

68Woodford County, ILIL38,1111.4%–

69Sangamon County, ILIL194,1701.3%–

70Crawford County, ILIL18,6481.3%–

71Hamilton County, ILIL7,8591.3%–

72Saline County, ILIL22,7721.3%–

73Christian County, ILIL33,4431.3%–

74Montgomery County, ILIL28,0761.2%–

75Calhoun County, ILIL4,3001.1%–

76Pope County, ILIL3,6721.1%–

77Franklin County, ILIL36,9161.1%–

78Scott County, ILIL4,8661.1%–

79Moultrie County, ILIL14,3711.0%–

80Greene County, ILIL11,3131.0%–

81Pike County, ILIL14,2311.0%–

82Hancock County, ILIL16,8031.0%–

83Piatt County, ILIL16,7911.0%–

84Edgar County, ILIL16,3231.0%–

85Cumberland County, ILIL10,2080.9%–

86Adams County, ILIL64,2670.9%–

87Jersey County, ILIL21,1600.9%–

88Menard County, ILIL11,8630.8%–

89White County, ILIL13,2500.8%–

90Richland County, ILIL15,2190.8%–

91Hardin County, ILIL3,5880.8%–

92Mason County, ILIL12,4110.7%–

93Macoupin County, ILIL43,7480.7%–

94Washington County, ILIL13,5640.6%–

95Wayne County, ILIL15,8820.6%–

96Shelby County, ILIL20,5760.6%–

97Jasper County, ILIL9,0320.5%–

98Alexander County, ILIL4,5700.5%–

99Gallatin County, ILIL4,6160.4%–

100Schuyler County, ILIL6,6570.4%–

101Edwards County, ILIL5,8980.3%–

102Clay County, ILIL12,7930.1%–

SHOWING 1–102 OF 102

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