RANKING · 2010 CENSUS · 102 SHOWN OF 102

Most racially diverse, Illinois counties · 2010

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, ILIL5,194,62586+5%

02Kane County, ILIL525,75769+18%

03Lake County, ILIL719,33966+27%

04Will County, ILIL712,25364+40%

05St. Clair County, ILIL250,70864+12%

06Alexander County, ILIL4,57063+5%

07Pulaski County, ILIL4,82061+6%

08DuPage County, ILIL934,29859+36%

09Champaign County, ILIL209,97258+30%

10Winnebago County, ILIL283,67455+33%

11Peoria County, ILIL178,55354+30%

12Kankakee County, ILIL105,52554+22%

13Kendall County, ILIL145,47053+137%

14Rock Island County, ILIL141,86950+33%

15Brown County, ILIL6,40150+11%

16Jackson County, ILIL52,50149+21%

17Boone County, ILIL53,56848+58%

18Macon County, ILIL99,30045+32%

19DeKalb County, ILIL101,83543+41%

20Cass County, ILIL12,46343+108%

21Vermilion County, ILIL71,25942+33%

22McLean County, ILIL171,41940+58%

23Sangamon County, ILIL194,17038+41%

24McHenry County, ILIL317,75135+60%

25Stephenson County, ILIL43,22033+42%

26Knox County, ILIL47,76732+33%

27Lawrence County, ILIL13,79032+617%

28Whiteside County, ILIL54,12131+32%

29Randolph County, ILIL29,92130+21%

30Madison County, ILIL263,11030+36%

31Jefferson County, ILIL36,14729+30%

32Lee County, ILIL32,91428+40%

33Perry County, ILIL20,16028+22%

34Warren County, ILIL16,22228+148%

35LaSalle County, ILIL107,77328+62%

36Logan County, ILIL27,18227+35%

37Johnson County, ILIL13,36327−27%

38Ogle County, ILIL51,39926+62%

39McDonough County, ILIL25,91626+54%

40Grundy County, ILIL54,05225+129%

41Massac County, ILIL13,50225+63%

42Livingston County, ILIL35,05724+26%

43Morgan County, ILIL32,51524+40%

44Bond County, ILIL16,95924+13%

45Crawford County, ILIL18,64823+49%

46Bureau County, ILIL32,51022+64%

47Pope County, ILIL3,67222+84%

48Marion County, ILIL36,38220+59%

49Williamson County, ILIL67,22520+93%

50Henry County, ILIL48,09520+90%

51Coles County, ILIL46,60719+73%

52Douglas County, ILIL19,88019+92%

53Saline County, ILIL22,77219+47%

54Clinton County, ILIL37,12819+32%

55Iroquois County, ILIL26,15018+51%

56Fulton County, ILIL32,90117+41%

57Union County, ILIL16,65617+87%

58Fayette County, ILIL20,79016+15%

59Adams County, ILIL64,26716+53%

60Putnam County, ILIL5,61914+60%

61Montgomery County, ILIL28,07614+18%

62Hardin County, ILIL3,58813+27%

63Schuyler County, ILIL6,65713+539%

64Carroll County, ILIL15,41912+67%

65Tazewell County, ILIL130,04912+106%

66De Witt County, ILIL15,11811+113%

67Jo Daviess County, ILIL21,59410+121%

68Henderson County, ILIL5,98410+234%

69Christian County, ILIL33,44310+18%

70Marshall County, ILIL11,47310+149%

71Pike County, ILIL14,2319+71%

72Effingham County, ILIL34,5199+201%

73Richland County, ILIL15,2199+120%

74Wabash County, ILIL10,9079+121%

75Ford County, ILIL13,2168+86%

76Woodford County, ILIL38,1118+171%

77Greene County, ILIL11,3138+138%

78Mercer County, ILIL15,2298+85%

79Macoupin County, ILIL43,7488+96%

80Franklin County, ILIL36,9168+221%

81Washington County, ILIL13,5648+152%

82Edwards County, ILIL5,8987+210%

83Gallatin County, ILIL4,6167+151%

84Monroe County, ILIL34,8407+171%

85Piatt County, ILIL16,7917+193%

86Clay County, ILIL12,7937+126%

87Hamilton County, ILIL7,8597+92%

88Hancock County, ILIL16,8037+188%

89Jersey County, ILIL21,1607+76%

90White County, ILIL13,2506+135%

91Wayne County, ILIL15,8826+142%

92Stark County, ILIL5,3196+128%

93Clark County, ILIL15,1146+290%

94Jasper County, ILIL9,0325+179%

95Cumberland County, ILIL10,2085+142%

96Edgar County, ILIL16,3235−26%

97Mason County, ILIL12,4115+148%

98Shelby County, ILIL20,5765+133%

99Menard County, ILIL11,8635+47%

100Moultrie County, ILIL14,3714+128%

101Calhoun County, ILIL4,3004+97%

102Scott County, ILIL4,8664+327%

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