12 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Upper Arlington | Franklin County | 35,830 |
| University Heights | Cuyahoga County | 12,951 |
| Urbana | Champaign County | 11,224 |
| Uniontown | Stark County | 8,555 |
| Union | Miami County | 7,164 |
| Upper Sandusky | Wyandot County | 6,596 |
| Uhrichsville | Tuscarawas County | 5,054 |
| Utica | Licking County | 2,161 |
| Union City | Darke County | 1,557 |
| Urbancrest | Franklin County | 1,002 |
| Uniopolis | Auglaize County | 292 |
| Unionville Center | Union County | 232 |