Counties in Illinois

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Illinois is divided into 102 counties. Here is the complete list:

Full List of all Counties in Illinois

  1. Adams County, IL
  2. Alexander County, IL
  3. Bond County, IL
  4. Boone County, IL
  5. Brown County, IL
  6. Bureau County, IL
  7. Calhoun County, IL
  8. Carroll County, IL
  9. Cass County, IL
  10. Champaign County, IL
  11. Christian County, IL
  12. Clark County, IL
  13. Clay County, IL
  14. Clinton County, IL
  15. Coles County, IL
  16. Cook County, IL
  17. Crawford County, IL
  18. Cumberland County, IL
  19. DeKalb County, IL
  20. DeWitt County, IL
  21. Douglas County, IL
  22. DuPage County, IL
  23. Edgar County, IL
  24. Edwards County, IL
  25. Effingham County, IL
  26. Fayette County, IL
  27. Ford County, IL
  28. Franklin County, IL
  29. Fulton County, IL
  30. Gallatin County, IL
  31. Greene County, IL
  32. Grundy County, IL
  33. Hamilton County, IL
  34. Hancock County, IL
  35. Hardin County, IL
  36. Henderson County, IL
  37. Henry County, IL
  38. Iroquois County, IL
  39. Jackson County, IL
  40. Jasper County, IL
  41. Jefferson County, IL
  42. Jersey County, IL
  43. Jo Daviess County, IL
  44. Johnson County, IL
  45. Kane County, IL
  46. Kankakee County, IL
  47. Kendall County, IL
  48. Knox County, IL
  49. Lake County, IL
  50. LaSalle County, IL
  51. Lawrence County, IL
  52. Lee County, IL
  53. Livingston County, IL
  54. Logan County, IL
  55. Macon County, IL
  56. Macoupin County, IL
  57. Madison County, IL
  58. Marion County, IL
  59. Marshall County, IL
  60. Mason County, IL
  61. Massac County, IL
  62. McDonough County, IL
  63. McHenry County, IL
  64. McLean County, IL
  65. Menard County, IL
  66. Mercer County, IL
  67. Monroe County, IL
  68. Montgomery County, IL
  69. Morgan County, IL
  70. Moultrie County, IL
  71. Ogle County, IL
  72. Peoria County, IL
  73. Perry County, IL
  74. Piatt County, IL
  75. Pike County, IL
  76. Pope County, IL
  77. Pulaski County, IL
  78. Putnam County, IL
  79. Randolph County, IL
  80. Richland County, IL
  81. Rock Island County, IL
  82. St. Clair County, IL
  83. Saline County, IL
  84. Sangamon County, IL
  85. Schuyler County, IL
  86. Scott County, IL
  87. Shelby County, IL
  88. Stark County, IL
  89. Stephenson County, IL
  90. Tazewell County, IL
  91. Union County, IL
  92. Vermilion County, IL
  93. Wabash County, IL
  94. Warren County, IL
  95. Washington County, IL
  96. Wayne County, IL
  97. White County, IL
  98. Whiteside County, IL
  99. Will County, IL
  100. Williamson County, IL
  101. Winnebago County, IL
  102. Woodford County, IL
Illinois map and seal
Illinois map and seal

 

Quick Facts

Category Quick Facts
Geography Located in the Midwest, features flat plains, rolling hills, and rivers
History Became the 21st U.S. state on December 3, 1818
Economy Strong in manufacturing, agriculture, and technology
Climate Humid continental climate with hot summers and cold winters
Natural Attractions Shawnee National Forest, Starved Rock State Park
Culture Known for Chicago blues music, deep-dish pizza, and diverse culture
Miscellaneous State bird is the Northern Cardinal, State flower is the Violet
Population Approximately 12.8 million people as of 2020 Census
Notable People Abraham Lincoln, Barack Obama, Oprah Winfrey
Notable Places Chicago, Springfield, Galena
Bordering States Borders Wisconsin to the north, Indiana to the east, Kentucky to the south, and Missouri and Iowa to the west
Official Website https://www2.illinois.gov/

 

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