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About this map

The chance that two residents picked at random belong to different racial or ethnic groups. 0 means everyone is in the same group; 50+ is very mixed. The U.S. overall scores about 61.

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024).

U.S.
61.4
Illinois
60.5
Rankings
Full list

Top and bottom zip codes in Illinois

Zip codes with 1,000+ residents

Most diverse zip codes

See all
  1. 160490Bolingbrook75.1
  2. 260504Aurora74.3
  3. 360139Glendale Heights73.7
  4. 460616Chicago73
  5. 560645Chicago72.9
  6. 660088Great Lakes72.7
  7. 760659Chicago72.5
  8. 860440Bolingbrook72.2
  9. 961104Rockford71.2
  10. 1060077Skokie71.1

Least diverse zip codes

See all
  1. 162555Owaneco0.3
  2. 262347Liberty1.2
  3. 362338Fowler1.3
  4. 462447Neoga1.5
  5. 562674Palmyra2.2
  6. 662611Arenzville2.3
  7. 762612Ashland2.4
  8. 862638Franklin2.4
  9. 962922Creal Springs2.5
  10. 1062242Evansville2.6

Diversity index by county in Illinois

  1. 1Cook County71.3
  2. 2Lake County61
  3. 3Will County59.9
  4. 4Kane County59.2
  5. 5Champaign County57.1
  6. 6St. Clair County56.8
  7. 7DuPage County56.7
  8. 8Kendall County55.6
  9. 9Winnebago County55.2
  10. 10Peoria County52.4
  11. 11Rock Island County51.1
  12. 12Pulaski County50.4
  13. 13Kankakee County50
  14. 14Alexander County49.5
  15. 15Boone County47.1
  16. 16DeKalb County46.7
  17. 17Jackson County46.6
  18. 18Cass County45.7
  19. 19Macon County43.2
  20. 20Brown County41.4
  21. 21McLean County40.4
  22. 22McHenry County39.3
  23. 23Vermilion County38.6
  24. 24Sangamon County38.3
  25. 25Stephenson County36.4
  26. 26Knox County34.9
  27. 27Johnson County34.5
  28. 28Warren County32.8
  29. 29Whiteside County32.6
  30. 30Madison County32.1
  31. 31LaSalle County31.1
  32. 32Grundy County30.5
  33. 33Ogle County29.6
  34. 34Lee County29.5
  35. 35Jefferson County29.2
  36. 36Lawrence County28.8
  37. 37Bureau County27.2
  38. 38Perry County27
  39. 39McDonough County26.9
  40. 40Randolph County26.6
  41. 41Bond County25.7
  42. 42Logan County25.6
  43. 43Massac County24.9
  44. 44Henry County23.7
  45. 45Morgan County23.5
  46. 46Iroquois County23.2
  47. 47Douglas County22.8
  48. 48Livingston County22.6
  49. 49Carroll County22.5
  50. 50Williamson County22.4
  51. 51Coles County22.2
  52. 52Fayette County21.6
  53. 53Putnam County21
  54. 54Pope County20.9
  55. 55Marion County20.2
  56. 56Ford County19.7
  57. 57Union County19.5
  58. 58Adams County18.6
  59. 59Clinton County18.5
  60. 60Schuyler County18.3
  61. 61Crawford County18.2
  62. 62Stark County17.4
  63. 63Christian County16.9
  64. 64Saline County16.3
  65. 65Montgomery County15.7
  66. 66Fulton County15.6
  67. 67Tazewell County15.4
  68. 68Jo Daviess County15.3
  69. 69Marshall County15
  70. 70De Witt County13.8
  71. 71Mercer County13.1
  72. 72Richland County12.7
  73. 73Wabash County12.6
  74. 74Macoupin County12.5
  75. 75Woodford County12.5
  76. 76Henderson County12.1
  77. 77Hancock County11.5
  78. 78Franklin County11.3
  79. 79Mason County11.2
  80. 80Effingham County11.1
  81. 81Calhoun County10.9
  82. 82Jersey County10.4
  83. 83Pike County10.3
  84. 84Hamilton County10.2
  85. 85Edwards County10.1
  86. 86Menard County10.1
  87. 87Piatt County10.1
  88. 88Clay County10
  89. 89Washington County10
  90. 90Wayne County9.7
  91. 91Clark County9.6
  92. 92Cumberland County9.6
  93. 93Gallatin County9.6
  94. 94Monroe County9.6
  95. 95Moultrie County9.5
  96. 96White County9.2
  97. 97Scott County8.8
  98. 98Hardin County8.3
  99. 99Edgar County8.1
  100. 100Greene County8.1
  101. 101Shelby County7.8
  102. 102Jasper County6.2

Questions about this map

Which zip code has the highest diversity index in Illinois?

Among zip codes with at least 1,000 residents, 60490 (Bolingbrook, IL) has the highest: 75.1.

Which zip code has the lowest diversity index in Illinois?

62555 (Owaneco, IL) has the lowest: 0.3.

What is the diversity index for the United States?

61.4; in Illinois it is 60.5.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). The chance that two residents picked at random belong to different racial or ethnic groups. 0 means everyone is in the same group; 50+ is very mixed. The U.S. overall scores about 61.

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