RANKING · 2020 CENSUS · 102 SHOWN OF 102

Least racially diverse, Illinois counties · 2020

Illinois counties with the lowest CensusEasy Diversity Score, where most residents share the same 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

01Greene County, ILIL11,3135+59%

02Shelby County, ILIL20,5766+210%

03Calhoun County, ILIL4,3006+220%

04Scott County, ILIL4,8667+708%

05Edgar County, ILIL16,3237+7%

06Jasper County, ILIL9,0327+305%

07Edwards County, ILIL5,8988+216%

08Wayne County, ILIL15,8828+192%

09Moultrie County, ILIL14,3718+324%

10Hardin County, ILIL3,5888−22%

11Hamilton County, ILIL7,8599+142%

12Piatt County, ILIL16,7919+257%

13Clark County, ILIL15,1149+444%

14Monroe County, ILIL34,8409+226%

15White County, ILIL13,2509+234%

16Mason County, ILIL12,4119+355%

17Cumberland County, ILIL10,2089+338%

18Washington County, ILIL13,56410+214%

19Franklin County, ILIL36,91610+325%

20Macoupin County, ILIL43,74810+155%

21Henderson County, ILIL5,98410+240%

22Menard County, ILIL11,86311+229%

23Pope County, ILIL3,67211−8%

24Hancock County, ILIL16,80311+368%

25Pike County, ILIL14,23111+102%

26Woodford County, ILIL38,11112+287%

27Jersey County, ILIL21,16012+216%

28Gallatin County, ILIL4,61612+311%

29Effingham County, ILIL34,51912+310%

30Stark County, ILIL5,31913+357%

31Clay County, ILIL12,79313+314%

32Richland County, ILIL15,21913+222%

33Mercer County, ILIL15,22913+211%

34De Witt County, ILIL15,11815+190%

35Wabash County, ILIL10,90715+276%

36Jo Daviess County, ILIL21,59415+218%

37Christian County, ILIL33,44315+75%

38Marshall County, ILIL11,47315+286%

39Tazewell County, ILIL130,04915+154%

40Ford County, ILIL13,21617+277%

41Crawford County, ILIL18,64817+10%

42Fulton County, ILIL32,90117+41%

43Montgomery County, ILIL28,07618+47%

44Putnam County, ILIL5,61919+110%

45Schuyler County, ILIL6,65719+822%

46Fayette County, ILIL20,79020+40%

47Adams County, ILIL64,26721+102%

48Union County, ILIL16,65621+134%

49Clinton County, ILIL37,12822+57%

50Saline County, ILIL22,77222+79%

51Douglas County, ILIL19,88023+141%

52Carroll County, ILIL15,41924+224%

53Marion County, ILIL36,38224+87%

54Livingston County, ILIL35,05724+27%

55Henry County, ILIL48,09525+144%

56Williamson County, ILIL67,22526+150%

57Iroquois County, ILIL26,15026+118%

58Coles County, ILIL46,60726+144%

59Logan County, ILIL27,18227+33%

60Morgan County, ILIL32,51527+60%

61Bond County, ILIL16,95929+37%

62Massac County, ILIL13,50229+89%

63Bureau County, ILIL32,51029+116%

64Randolph County, ILIL29,92130+18%

65Perry County, ILIL20,16031+36%

66McDonough County, ILIL25,91631+89%

67Jefferson County, ILIL36,14733+47%

68Lee County, ILIL32,91433+65%

69Ogle County, ILIL51,39934+108%

70LaSalle County, ILIL107,77334+100%

71Grundy County, ILIL54,05235+211%

72Lawrence County, ILIL13,79035+699%

73Johnson County, ILIL13,36335−4%

74Whiteside County, ILIL54,12136+56%

75Madison County, ILIL263,11038+75%

76Knox County, ILIL47,76739+63%

77Warren County, ILIL16,22240+254%

78Stephenson County, ILIL43,22042+84%

79McHenry County, ILIL317,75145+106%

80Sangamon County, ILIL194,17046+70%

81Vermilion County, ILIL71,25946+47%

82Brown County, ILIL6,40147+4%

83McLean County, ILIL171,41948+92%

84Macon County, ILIL99,30055+62%

85Jackson County, ILIL52,50156+39%

86Boone County, ILIL53,56856+83%

87DeKalb County, ILIL101,83557+84%

88Cass County, ILIL12,46357+176%

89Kankakee County, ILIL105,52559+35%

90Alexander County, ILIL4,57059−1%

91Rock Island County, ILIL141,86962+65%

92Peoria County, ILIL178,55363+51%

93Pulaski County, ILIL4,82064+11%

94Kendall County, ILIL145,47064+186%

95Winnebago County, ILIL283,67466+59%

96DuPage County, ILIL934,29868+58%

97St. Clair County, ILIL250,70869+21%

98Champaign County, ILIL209,97271+60%

99Will County, ILIL712,25372+58%

100Kane County, ILIL525,75772+24%

101Lake County, ILIL719,33974+43%

102Cook County, ILIL5,194,62588+8%

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