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City | County | 2025 Pop. ↓ |
---|---|---|
Oxford | Butler County | 21,868 |
Oregon | Lucas County | 19,565 |
Oakwood | Paulding County | 9,253 |
Olmsted Falls | Cuyahoga County | 8,541 |
Orrville | Wayne County | 8,396 |
Obetz | Franklin County | 7,935 |
Oberlin | Lorain County | 7,123 |
Ontario | Richland County | 6,647 |
Ottawa Hills | Lucas County | 4,776 |
Ottawa | Putnam County | 4,393 |
Orange | Cuyahoga County | 3,541 |
Oakwood | Paulding County | 3,421 |
Oak Harbor | Ottawa County | 2,785 |
Orwell | Ashtabula County | 1,506 |
Oak Hill | Jackson County | 1,392 |
Ostrander | Delaware County | 1,262 |
Ottoville | Putnam County | 971 |
Owensville | Clermont County | 818 |
Ohio City | Van Wert County | 634 |
Oakwood | Paulding County | 535 |
Osgood | Darke County | 294 |
Orient | Pickaway County | 260 |
Olde West Chester | Butler County | 253 |
Oceola | Crawford County | 249 |
Old Washington | Guernsey County | 221 |
Orangeville | Trumbull County | 167 |
Old Fort | Seneca County | 126 |
Otway | Scioto County | 88 |
Octa | Fayette County | 58 |