Towns
| State | City/Town | Town Title |
|---|---|---|
| Wisconsin | Okauchee | Okauchee, WI |
| Wisconsin | Omro | Omro, WI |
| Wisconsin | Onalaska | Onalaska, WI |
| Wisconsin | Oneida | Oneida, WI |
| Wisconsin | Ontario | Ontario, WI |
| Wisconsin | Oostburg | Oostburg, WI |
| Wisconsin | Oregon | Oregon, WI |
| Wisconsin | Orfordville | Orfordville, WI |
| Wisconsin | Osceola | Osceola, WI |
| Wisconsin | Oshkosh | Oshkosh, WI |
| Wisconsin | Osseo | Osseo, WI |
| Wisconsin | Owen | Owen, WI |
| Wisconsin | Oxford | Oxford, WI |
| Wisconsin | Packwaukee | Packwaukee, WI |
| Wisconsin | Palmyra | Palmyra, WI |
| Wisconsin | Pardeeville | Pardeeville, WI |
| Wisconsin | Park Falls | Park Falls, WI |
| Wisconsin | Patch Grove | Patch Grove, WI |
| Wisconsin | Pearson | Pearson, WI |
| Wisconsin | Pelican Lake | Pelican Lake, WI |
| Wisconsin | Pell Lake | Pell Lake, WI |
| Wisconsin | Pembine | Pembine, WI |
| Wisconsin | Pepin | Pepin, WI |
| Wisconsin | Peshtigo | Peshtigo, WI |
| Wisconsin | Pewaukee | Pewaukee, WI |