RANKING · 2024 ACS · 102 SHOWN OF 102

Most racially diverse, Illinois counties

Illinois counties ranked by the CensusEasy Diversity Score (0 to 100), the chance two random residents are of a different race or ethnicity (2024 ACS). This list covers the 102 counties in Illinois that qualify, ranked against each other statewide. The median across all 102 is 28.

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IllinoisAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

RANKPLACESTATEPOPDIVERSITY SCOREVS 1990

01Cook County, ILIL5,194,62589+21%

02Lake County, ILIL719,33976+110%

03Will County, ILIL712,25375+97%

04Kane County, ILIL525,75774+69%

05Champaign County, ILIL209,97271+98%

06St. Clair County, ILIL250,70871+32%

07DuPage County, ILIL934,29871+172%

08Kendall County, ILIL145,47069+444%

09Winnebago County, ILIL283,67469+128%

10Peoria County, ILIL178,55365+86%

11Rock Island County, ILIL141,86964+115%

12Pulaski County, ILIL4,82063+12%

13Kankakee County, ILIL105,52563+69%

14Alexander County, ILIL4,57062+10%

15Boone County, ILIL53,56859+228%

16DeKalb County, ILIL101,83558+210%

17Jackson County, ILIL52,50158+65%

18Cass County, ILIL12,46357+4011%

19Macon County, ILIL99,30054+86%

20Brown County, ILIL6,40152+95%

21McLean County, ILIL171,41950+213%

22McHenry County, ILIL317,75149+375%

23Vermilion County, ILIL71,25948+93%

24Sangamon County, ILIL194,17048+117%

25Stephenson County, ILIL43,22045+153%

26Knox County, ILIL47,76744+129%

27Johnson County, ILIL13,36343+58%

28Warren County, ILIL16,22241+437%

29Whiteside County, ILIL54,12141+110%

30Madison County, ILIL263,11040+108%

31LaSalle County, ILIL107,77339+254%

32Grundy County, ILIL54,05238+435%

33Ogle County, ILIL51,39937+267%

34Lee County, ILIL32,91437+145%

35Jefferson County, ILIL36,14736+135%

36Lawrence County, ILIL13,79036+658%

37Bureau County, ILIL32,51034+300%

38Perry County, ILIL20,16034+438%

39McDonough County, ILIL25,91634+103%

40Randolph County, ILIL29,92133+56%

41Bond County, ILIL16,95932+226%

42Logan County, ILIL27,18232+121%

43Massac County, ILIL13,50231+89%

44Henry County, ILIL48,09530+313%

45Morgan County, ILIL32,51529+123%

46Iroquois County, ILIL26,15029+390%

47Douglas County, ILIL19,88028+571%

48Livingston County, ILIL35,05728+54%

49Carroll County, ILIL15,41928+223%

50Williamson County, ILIL67,22528+240%

51Coles County, ILIL46,60728+211%

52Fayette County, ILIL20,79027+215%

53Putnam County, ILIL5,61926+202%

54Pope County, ILIL3,67226+51%

55Marion County, ILIL36,38225+93%

56Ford County, ILIL13,21625+900%

57Union County, ILIL16,65624+450%

58Adams County, ILIL64,26723+184%

59Clinton County, ILIL37,12823+119%

60Schuyler County, ILIL6,65723+3719%

61Crawford County, ILIL18,64823+653%

62Stark County, ILIL5,31922+627%

63Christian County, ILIL33,44321+967%

64Saline County, ILIL22,77220+94%

65Montgomery County, ILIL28,07620+142%

66Fulton County, ILIL32,90120+188%

67Tazewell County, ILIL130,04919+495%

68Jo Daviess County, ILIL21,59419+818%

69Marshall County, ILIL11,47319+385%

70De Witt County, ILIL15,11817+394%

71Mercer County, ILIL15,22916+378%

72Richland County, ILIL15,21916+820%

73Wabash County, ILIL10,90716+292%

74Woodford County, ILIL38,11116+435%

75Macoupin County, ILIL43,74816+306%

76Henderson County, ILIL5,98415+470%

77Hancock County, ILIL16,80314+728%

78Franklin County, ILIL36,91614+638%

79Mason County, ILIL12,41114+651%

80Effingham County, ILIL34,51914+772%

81Calhoun County, ILIL4,30014+835%

82Jersey County, ILIL21,16013+324%

83Pike County, ILIL14,23113+780%

84Hamilton County, ILIL7,85913+716%

85Edwards County, ILIL5,89813+369%

86Menard County, ILIL11,86313+785%

87Piatt County, ILIL16,79113+1009%

88Washington County, ILIL13,56413+364%

89Clay County, ILIL12,79312+514%

90Wayne County, ILIL15,88212+296%

91Clark County, ILIL15,11412+360%

92Monroe County, ILIL34,84012+260%

93Gallatin County, ILIL4,61612+249%

94Cumberland County, ILIL10,20812+1451%

95Moultrie County, ILIL14,37112+813%

96White County, ILIL13,25011+203%

97Scott County, ILIL4,86611+1151%

98Hardin County, ILIL3,58810+79%

99Edgar County, ILIL16,32310+214%

100Greene County, ILIL11,31310+439%

101Shelby County, ILIL20,57610+1141%

102Jasper County, ILIL9,0328+262%

SHOWING 1–102 OF 102

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

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES