RANKING · 1990 CENSUS · 102 SHOWN OF 102

Most racially diverse, Illinois counties · 1990

Illinois counties ranked by the CensusEasy Diversity Score (0 to 100), the chance two random residents are of a different race or ethnicity (2023 ACS). This list covers the 102 counties in Illinois that qualify, ranked against each other statewide.

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IllinoisAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Cook County, ILIL5,194,62578−5%

02Alexander County, ILIL4,57056−6%

03Pulaski County, ILIL4,82056−2%

04St. Clair County, ILIL250,70854−5%

05Kane County, ILIL525,75752−12%

06Will County, ILIL712,25342−8%

07Lake County, ILIL719,33941−22%

08Kankakee County, ILIL105,52538−13%

09Champaign County, ILIL209,97237−16%

10Jackson County, ILIL52,50136−9%

11Peoria County, ILIL178,55336−14%

12Rock Island County, ILIL141,86933−12%

13Winnebago County, ILIL283,67432−22%

14Macon County, ILIL99,30029−13%

15DuPage County, ILIL934,29828−35%

16Johnson County, ILIL13,36327−27%

17Whiteside County, ILIL54,12126+13%

18Brown County, ILIL6,40126−42%

19Vermilion County, ILIL71,25926−18%

20Boone County, ILIL53,56825−19%

21Sangamon County, ILIL194,17022−17%

22Randolph County, ILIL29,92122−14%

23Knox County, ILIL47,76721−11%

24DeKalb County, ILIL101,83521−31%

25Livingston County, ILIL35,05721+8%

26Madison County, ILIL263,11020−9%

27Stephenson County, ILIL43,22018−20%

28Pope County, ILIL3,67218+53%

29Kendall County, ILIL145,47017−23%

30Lee County, ILIL32,91417−15%

31McDonough County, ILIL25,91617+2%

32McLean County, ILIL171,41917−33%

33Massac County, ILIL13,50216+5%

34Jefferson County, ILIL36,14716−26%

35Logan County, ILIL27,18215−25%

36Morgan County, ILIL32,51514−20%

37Ogle County, ILIL51,39914−16%

38Marion County, ILIL36,38214+5%

39LaSalle County, ILIL107,77313−24%

40McHenry County, ILIL317,75113−41%

41Putnam County, ILIL5,61913+41%

42Clinton County, ILIL37,12812−18%

43Saline County, ILIL22,77211−13%

44Bond County, ILIL16,95911−49%

45Carroll County, ILIL15,41910+33%

46Bureau County, ILIL32,51010−29%

47Coles County, ILIL46,60710−12%

48Fayette County, ILIL20,7909−32%

49Grundy County, ILIL54,0529−16%

50Warren County, ILIL16,2229−22%

51Montgomery County, ILIL28,0769−27%

52Williamson County, ILIL67,2259−16%

53Adams County, ILIL64,2678−20%

54Iroquois County, ILIL26,1508−31%

55Henry County, ILIL48,0958−22%

56Fulton County, ILIL32,9018−38%

57Perry County, ILIL20,1606−72%

58Hardin County, ILIL3,5886−45%

59Union County, ILIL16,6566−39%

60Douglas County, ILIL19,8805−47%

61Lawrence County, ILIL13,7905+7%

62Wabash County, ILIL10,9075+15%

63White County, ILIL13,2504+51%

64Marshall County, ILIL11,4734+6%

65Macoupin County, ILIL43,7484−2%

66Mercer County, ILIL15,2294−10%

67Tazewell County, ILIL130,0494−39%

68Monroe County, ILIL34,8404+33%

69De Witt County, ILIL15,1184−29%

70Wayne County, ILIL15,8824+36%

71Gallatin County, ILIL4,6163+16%

72Edgar County, ILIL16,3233−50%

73Stark County, ILIL5,3193+22%

74Jersey County, ILIL21,1603−16%

75Woodford County, ILIL38,1113+2%

76Edwards County, ILIL5,8983+27%

77Crawford County, ILIL18,6483−81%

78Henderson County, ILIL5,9843−5%

79Washington County, ILIL13,5643−4%

80Clark County, ILIL15,1143+76%

81Ford County, ILIL13,2163−38%

82Jo Daviess County, ILIL21,5943−45%

83Clay County, ILIL12,7932−28%

84Jasper County, ILIL9,0322+19%

85Hancock County, ILIL16,8032−7%

86Greene County, ILIL11,3132−38%

87Christian County, ILIL33,4432−76%

88Franklin County, ILIL36,9162−17%

89Mason County, ILIL12,4112−7%

90Richland County, ILIL15,2192−55%

91Menard County, ILIL11,8632−45%

92Effingham County, ILIL34,5192−42%

93Pike County, ILIL14,2312−71%

94Moultrie County, ILIL14,3712−19%

95Hamilton County, ILIL7,8592−56%

96Calhoun County, ILIL4,3001−28%

97Cass County, ILIL12,4631−93%

98Piatt County, ILIL16,7911−50%

99Cumberland County, ILIL10,2081−54%

100Scott County, ILIL4,8661+3%

101Schuyler County, ILIL6,6571−60%

102Shelby County, ILIL20,5761−62%

SHOWING 1–102 OF 102

Download CSV (full list, 102 rows)How this score is calculated

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES