RANKING · 2020 CENSUS · 102 SHOWN OF 102

Most racially diverse, Illinois counties · 2020

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, ILIL5,194,62588+8%

02Lake County, ILIL719,33974+43%

03Kane County, ILIL525,75772+24%

04Will County, ILIL712,25372+58%

05Champaign County, ILIL209,97271+60%

06St. Clair County, ILIL250,70869+21%

07DuPage County, ILIL934,29868+58%

08Winnebago County, ILIL283,67466+59%

09Kendall County, ILIL145,47064+186%

10Pulaski County, ILIL4,82064+11%

11Peoria County, ILIL178,55363+51%

12Rock Island County, ILIL141,86962+65%

13Alexander County, ILIL4,57059−1%

14Kankakee County, ILIL105,52559+35%

15Cass County, ILIL12,46357+176%

16DeKalb County, ILIL101,83557+84%

17Boone County, ILIL53,56856+83%

18Jackson County, ILIL52,50156+39%

19Macon County, ILIL99,30055+62%

20McLean County, ILIL171,41948+92%

21Brown County, ILIL6,40147+4%

22Vermilion County, ILIL71,25946+47%

23Sangamon County, ILIL194,17046+70%

24McHenry County, ILIL317,75145+106%

25Stephenson County, ILIL43,22042+84%

26Warren County, ILIL16,22240+254%

27Knox County, ILIL47,76739+63%

28Madison County, ILIL263,11038+75%

29Whiteside County, ILIL54,12136+56%

30Johnson County, ILIL13,36335−4%

31Lawrence County, ILIL13,79035+699%

32Grundy County, ILIL54,05235+211%

33LaSalle County, ILIL107,77334+100%

34Ogle County, ILIL51,39934+108%

35Lee County, ILIL32,91433+65%

36Jefferson County, ILIL36,14733+47%

37McDonough County, ILIL25,91631+89%

38Perry County, ILIL20,16031+36%

39Randolph County, ILIL29,92130+18%

40Bureau County, ILIL32,51029+116%

41Massac County, ILIL13,50229+89%

42Bond County, ILIL16,95929+37%

43Morgan County, ILIL32,51527+60%

44Logan County, ILIL27,18227+33%

45Coles County, ILIL46,60726+144%

46Iroquois County, ILIL26,15026+118%

47Williamson County, ILIL67,22526+150%

48Henry County, ILIL48,09525+144%

49Livingston County, ILIL35,05724+27%

50Marion County, ILIL36,38224+87%

51Carroll County, ILIL15,41924+224%

52Douglas County, ILIL19,88023+141%

53Saline County, ILIL22,77222+79%

54Clinton County, ILIL37,12822+57%

55Union County, ILIL16,65621+134%

56Adams County, ILIL64,26721+102%

57Fayette County, ILIL20,79020+40%

58Schuyler County, ILIL6,65719+822%

59Putnam County, ILIL5,61919+110%

60Montgomery County, ILIL28,07618+47%

61Fulton County, ILIL32,90117+41%

62Crawford County, ILIL18,64817+10%

63Ford County, ILIL13,21617+277%

64Tazewell County, ILIL130,04915+154%

65Marshall County, ILIL11,47315+286%

66Christian County, ILIL33,44315+75%

67Jo Daviess County, ILIL21,59415+218%

68Wabash County, ILIL10,90715+276%

69De Witt County, ILIL15,11815+190%

70Mercer County, ILIL15,22913+211%

71Richland County, ILIL15,21913+222%

72Clay County, ILIL12,79313+314%

73Stark County, ILIL5,31913+357%

74Effingham County, ILIL34,51912+310%

75Gallatin County, ILIL4,61612+311%

76Jersey County, ILIL21,16012+216%

77Woodford County, ILIL38,11112+287%

78Pike County, ILIL14,23111+102%

79Hancock County, ILIL16,80311+368%

80Pope County, ILIL3,67211−8%

81Menard County, ILIL11,86311+229%

82Henderson County, ILIL5,98410+240%

83Macoupin County, ILIL43,74810+155%

84Franklin County, ILIL36,91610+325%

85Washington County, ILIL13,56410+214%

86Cumberland County, ILIL10,2089+338%

87Mason County, ILIL12,4119+355%

88White County, ILIL13,2509+234%

89Monroe County, ILIL34,8409+226%

90Clark County, ILIL15,1149+444%

91Piatt County, ILIL16,7919+257%

92Hamilton County, ILIL7,8599+142%

93Hardin County, ILIL3,5888−22%

94Moultrie County, ILIL14,3718+324%

95Wayne County, ILIL15,8828+192%

96Edwards County, ILIL5,8988+216%

97Jasper County, ILIL9,0327+305%

98Edgar County, ILIL16,3237+7%

99Scott County, ILIL4,8667+708%

100Calhoun County, ILIL4,3006+220%

101Shelby County, ILIL20,5766+210%

102Greene County, ILIL11,3135+59%

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