Counties in Ohio


88 Counties

The State of Ohio is defined by its 88 counties. Formed in 1788, Washington County is Ohio's oldest county. Noble County, formed in 1851, is Ohio's youngest county. Ashtabula County is the largest county by land area, while Lake County is the smallest by land area.

evolution of ohio's counties
  1. Adams
  2. Allen
  3. Ashland
  4. Ashtabula
  5. Athens
  6. Auglaize
  7. Belmont
  8. Brown
  9. Butler
  10. Carroll
  11. Champaign
  12. Clark
  13. Clermont
  14. Clinton
  15. Columbiana
  16. Coshocton
  17. Crawford
  18. Cuyahoga
  19. Darke
  20. Defiance
  21. Delaware
  22. Erie
  23. Fairfield
  24. Fayette
  25. Franklin
  26. Fulton
  27. Gallia
  28. Geauga
  29. Greene
  30. Guernsey
  31. Hamilton
  32. Hancock
  33. Hardin
  34. Harrison
  35. Henry
  36. Highland
  37. Hocking
  38. Holmes
  39. Huron
  40. Jackson
  41. Jefferson
  42. Knox
  43. Lake
  44. Lawrence
  45. Licking
  46. Logan
  47. Lorain
  48. Lucas
  49. Madison
  50. Mahoning
  51. Marion
  52. Medina
  53. Meigs
  54. Mercer
  55. Miami
  56. Monroe
  57. Montgomery
  58. Morgan
  59. Morrow
  60. Muskingum
  61. Noble
  62. Ottawa
  63. Paulding
  64. Perry
  65. Pickaway
  66. Pike
  67. Portage
  68. Preble
  69. Putnam
  70. Richland
  71. Ross
  72. Sandusky
  73. Scioto
  74. Seneca
  75. Shelby
  76. Stark
  77. Summit
  78. Trumbull
  79. Tuscarawas
  80. Union
  81. Van Wert
  82. Vinton
  83. Warren
  84. Washington
  85. Wayne
  86. Williams
  87. Wood
  88. Wyandot
    89.

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