Ohio County List
| County |
State |
Population |
| Franklin County, Ohio |
Ohio |
1,321,635 |
| Cuyahoga County, Ohio |
Ohio |
1,249,418 |
| Hamilton County, Ohio |
Ohio |
827,878 |
| Summit County, Ohio |
Ohio |
538,087 |
| Montgomery County, Ohio |
Ohio |
535,528 |
| Lucas County, Ohio |
Ohio |
428,748 |
| Butler County, Ohio |
Ohio |
389,910 |
| Stark County, Ohio |
Ohio |
373,764 |
| Lorain County, Ohio |
Ohio |
314,588 |
| Warren County, Ohio |
Ohio |
246,364 |
| Lake County, Ohio |
Ohio |
232,101 |
| Mahoning County, Ohio |
Ohio |
227,063 |
| Delaware County, Ohio |
Ohio |
221,160 |
| Clermont County, Ohio |
Ohio |
209,862 |
| Trumbull County, Ohio |
Ohio |
201,367 |
| Medina County, Ohio |
Ohio |
183,049 |
| Licking County, Ohio |
Ohio |
180,311 |
| Greene County, Ohio |
Ohio |
168,531 |
| Portage County, Ohio |
Ohio |
161,421 |
| Fairfield County, Ohio |
Ohio |
161,289 |
| Clark County, Ohio |
Ohio |
135,445 |
| Wood County, Ohio |
Ohio |
131,795 |
| Richland County, Ohio |
Ohio |
125,138 |
| Wayne County, Ohio |
Ohio |
116,618 |
| Miami County, Ohio |
Ohio |
109,549 |
| Allen County, Ohio |
Ohio |
101,685 |
| Columbiana County, Ohio |
Ohio |
101,203 |
| Ashtabula County, Ohio |
Ohio |
97,343 |
| Geauga County, Ohio |
Ohio |
95,479 |
| Tuscarawas County, Ohio |
Ohio |
92,585 |
| Muskingum County, Ohio |
Ohio |
86,382 |
| Ross County, Ohio |
Ohio |
76,748 |
| Erie County, Ohio |
Ohio |
74,938 |
| Hancock County, Ohio |
Ohio |
74,885 |
| Scioto County, Ohio |
Ohio |
73,118 |
| Belmont County, Ohio |
Ohio |
65,982 |
| Union County, Ohio |
Ohio |
65,293 |
| Marion County, Ohio |
Ohio |
65,145 |
| Jefferson County, Ohio |
Ohio |
64,855 |
| Knox County, Ohio |
Ohio |
62,888 |
| Athens County, Ohio |
Ohio |
61,573 |
| Pickaway County, Ohio |
Ohio |
59,407 |
| Washington County, Ohio |
Ohio |
59,318 |
| Sandusky County, Ohio |
Ohio |
58,770 |
| Huron County, Ohio |
Ohio |
58,412 |
| Lawrence County, Ohio |
Ohio |
57,385 |
| Seneca County, Ohio |
Ohio |
54,861 |
| Ashland County, Ohio |
Ohio |
52,296 |
| Darke County, Ohio |
Ohio |
51,655 |
| Shelby County, Ohio |
Ohio |
48,007 |
| Auglaize County, Ohio |
Ohio |
46,209 |
| Logan County, Ohio |
Ohio |
46,140 |
| Holmes County, Ohio |
Ohio |
44,312 |
| Madison County, Ohio |
Ohio |
44,126 |
| Brown County, Ohio |
Ohio |
43,710 |
| Highland County, Ohio |
Ohio |
43,403 |
| Mercer County, Ohio |
Ohio |
42,438 |
| Fulton County, Ohio |
Ohio |
42,434 |
| Clinton County, Ohio |
Ohio |
42,014 |
| Crawford County, Ohio |
Ohio |
41,767 |
| Preble County, Ohio |
Ohio |
40,802 |
| Ottawa County, Ohio |
Ohio |
40,161 |
| Champaign County, Ohio |
Ohio |
38,772 |
| Guernsey County, Ohio |
Ohio |
38,283 |
| Defiance County, Ohio |
Ohio |
38,258 |
| Williams County, Ohio |
Ohio |
36,862 |
| Coshocton County, Ohio |
Ohio |
36,679 |
| Perry County, Ohio |
Ohio |
35,474 |
| Morrow County, Ohio |
Ohio |
35,214 |
| Putnam County, Ohio |
Ohio |
34,352 |
| Jackson County, Ohio |
Ohio |
32,588 |
| Hardin County, Ohio |
Ohio |
30,527 |
| Gallia County, Ohio |
Ohio |
29,162 |
| Fayette County, Ohio |
Ohio |
28,880 |
| Van Wert County, Ohio |
Ohio |
28,824 |
| Hocking County, Ohio |
Ohio |
27,938 |
| Henry County, Ohio |
Ohio |
27,581 |
| Adams County, Ohio |
Ohio |
27,510 |
| Pike County, Ohio |
Ohio |
27,080 |
| Carroll County, Ohio |
Ohio |
26,731 |
| Meigs County, Ohio |
Ohio |
22,072 |
| Wyandot County, Ohio |
Ohio |
21,699 |
| Paulding County, Ohio |
Ohio |
18,800 |
| Harrison County, Ohio |
Ohio |
14,408 |
| Noble County, Ohio |
Ohio |
14,252 |
| Morgan County, Ohio |
Ohio |
13,758 |
| Monroe County, Ohio |
Ohio |
13,308 |
| Vinton County, Ohio |
Ohio |
12,686 |
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