Ohio — All 88 Counties
Ohio has 88 counties with 1,256 communities and a combined population of 8,301,833.
| County | Towns | Population |
|---|
| Cuyahoga County | 57 | 1,235,012 |
| Delaware County | 12 | 1,063,752 |
| Hamilton County | 84 | 736,031 |
| Summit County | 25 | 456,489 |
| Greene County | 14 | 347,232 |
| Lucas County | 13 | 341,309 |
| Franklin County | 24 | 262,532 |
| Lorain County | 17 | 256,120 |
| Butler County | 21 | 246,246 |
| Montgomery County | 20 | 187,044 |
| Stark County | 27 | 180,791 |
| Lake County | 19 | 179,946 |
| Mahoning County | 20 | 157,671 |
| Fairfield County | 21 | 132,877 |
| Trumbull County | 26 | 122,607 |
| Miami County | 14 | 118,651 |
| Portage County | 15 | 108,948 |
| Licking County | 20 | 104,129 |
| Medina County | 13 | 103,651 |
| Warren County | 16 | 99,239 |
| Clark County | 17 | 87,868 |
| Wood County | 27 | 87,799 |
| Richland County | 8 | 73,686 |
| Clermont County | 21 | 72,779 |
| Hancock County | 12 | 59,663 |
| Allen County | 12 | 58,710 |
| Tuscarawas County | 21 | 57,646 |
| Erie County | 15 | 56,040 |
| Columbiana County | 23 | 54,900 |
| Ashtabula County | 14 | 54,751 |
| Wayne County | 16 | 48,456 |
| Muskingum County | 16 | 42,451 |
| Marion County | 8 | 39,974 |
| Scioto County | 15 | 38,836 |
| Jefferson County | 19 | 36,878 |
| Athens County | 15 | 35,768 |
| Sandusky County | 13 | 34,772 |
| Huron County | 12 | 34,062 |
| Belmont County | 24 | 33,938 |
| Knox County | 12 | 33,409 |
| Union County | 7 | 32,570 |
| Washington County | 13 | 29,358 |
| Auglaize County | 11 | 29,075 |
| Crawford County | 9 | 28,394 |
| Ashland County | 12 | 28,004 |
| Pickaway County | 9 | 27,829 |
| Shelby County | 10 | 27,539 |
| Darke County | 21 | 27,198 |
| Ross County | 10 | 27,142 |
| Clinton County | 9 | 24,300 |
| Logan County | 15 | 23,893 |
| Mercer County | 9 | 23,156 |
| Madison County | 8 | 23,129 |
| Fulton County | 10 | 22,432 |
| Seneca County | 13 | 22,239 |
| Geauga County | 9 | 22,081 |
| Defiance County | 5 | 21,537 |
| Williams County | 14 | 21,395 |
| Lawrence County | 9 | 21,048 |
| Preble County | 10 | 20,646 |
| Champaign County | 8 | 18,434 |
| Brown County | 12 | 18,194 |
| Fayette County | 8 | 18,126 |
| Putnam County | 16 | 16,754 |
| Hardin County | 10 | 16,707 |
| Coshocton County | 9 | 16,604 |
| Guernsey County | 11 | 15,462 |
| Highland County | 9 | 15,247 |
| Ottawa County | 10 | 14,732 |
| Henry County | 10 | 14,665 |
| Van Wert County | 8 | 14,054 |
| Perry County | 11 | 13,801 |
| Jackson County | 4 | 13,758 |
| Wyandot County | 8 | 12,382 |
| Carroll County | 9 | 11,691 |
| Adams County | 8 | 9,630 |
| Hocking County | 7 | 9,224 |
| Paulding County | 11 | 8,872 |
| Holmes County | 10 | 8,157 |
| Morrow County | 10 | 7,709 |
| Pike County | 5 | 7,397 |
| Harrison County | 11 | 7,164 |
| Meigs County | 6 | 6,852 |
| Gallia County | 8 | 6,524 |
| Monroe County | 11 | 4,353 |
| Morgan County | 5 | 3,872 |
| Vinton County | 4 | 3,328 |
| Noble County | 6 | 2,512 |