City | 2024 Population |
|---|---|
| Oak Hill | 563 |
| Oak Park | 28,856 |
| Oakfield | 6,030 |
| Oakland | 20,436 |
| Oakley | 283 |
| Oceola | 14,858 |
| Ocqueoc | 575 |
| Oden | 167 |
| Odessa | 3,943 |
| Ogden | 890 |
| Ogemaw | 1,181 |
| Okemos | 26,289 |
| Olive | 2,550 |
| Oliver | 1,399 |
| Olivet | 1,290 |
| Omena | 355 |
| Omer | 285 |
| Onaway | 918 |
| Oneida | 3,946 |
| Onekama | 404 |
| Onondaga | 2,977 |
| Onota | 371 |
| Onsted | 995 |
| Ontonagon | 1,288 |
| Ontwa | 6,807 |
| Orange | 1,027 |
| Orangeville | 3,561 |
| Orchard Lake Village | 2,197 |
| Oregon | 5,704 |
| Orient | 742 |
| Orion | 38,596 |
| Orleans | 2,719 |
| Oronoko | 9,134 |
| Ortonville | 1,324 |
| Osceola | 1,836 |
| Oscoda | 1,103 |
| Oshtemo | 23,668 |
| Ossineke | 876 |
| Otisco | 2,291 |
| Otisville | 803 |
| Otsego | 4,035 |
| Otsego Lake | 2,978 |
| Otter Lake | 356 |
| Otto | 897 |
| Overisel | 3,169 |
| Ovid | 1,486 |
| Owendale | 257 |
| Owosso | 14,543 |
| Oxford | 3,436 |