Counties in Ohio

1. Brown (State: Ohio Population: 5,655)
2. Hamilton (State: Ohio Population: 571,700)
3. Summit (State: Ohio Population: 447,748)
4. Stark (State: Ohio Population: 178,352)
5. Clermont (State: Ohio Population: 33,962)
6. Lorain (State: Ohio Population: 220,746)
7. Ashtabula (State: Ohio Population: 46,439)
8. Darke (State: Ohio Population: 20,871)
9. Paulding (State: Ohio Population: 6,501)
10. Ashland (State: Ohio Population: 24,155)
11. Pickaway (State: Ohio Population: 18,900)
12. Athens (State: Ohio Population: 32,542)
13. Mahoning (State: Ohio Population: 192,477)
14. Sandusky (State: Ohio Population: 30,447)
15. Fairfield (State: Ohio Population: 54,914)
16. Belmont (State: Ohio Population: 30,600)
17. Cuyahoga (State: Ohio Population: 1,337,404)
18. Licking (State: Ohio Population: 71,779)
19. Richland (State: Ohio Population: 66,243)
20. Seneca (State: Ohio Population: 33,111)
21. Allen (State: Ohio Population: 18,847)
22. Trumbull (State: Ohio Population: 127,861)
23. Miami (State: Ohio Population: 61,021)
24. Medina (State: Ohio Population: 80,178)
25. Williams (State: Ohio Population: 19,426)
26. Geauga (State: Ohio Population: 15,507)
27. Guernsey (State: Ohio Population: 14,094)
28. Columbiana (State: Ohio Population: 33,960)
29. Ross (State: Ohio Population: 24,554)
30. Van Wert (State: Ohio Population: 11,800)
31. Coshocton (State: Ohio Population: 13,995)
32. Auglaize (State: Ohio Population: 25,336)
33. Defiance (State: Ohio Population: 20,114)
34. Tuscarawas (State: Ohio Population: 47,692)
35. Muskingum (State: Ohio Population: 37,746)
36. Scioto (State: Ohio Population: 38,346)
37. Gallia (State: Ohio Population: 4,180)
38. Highland (State: Ohio Population: 6,159)
39. Preble (State: Ohio Population: 4,816)
40. Vinton (State: Ohio Population: 1,888)
41. Wyandot (State: Ohio Population: 6,533)