Wisconsin cities which start with the letter O.
| Place | Place Type | 2010 Population |
|---|---|---|
| Oak Creek | city | 34451 |
| Oak Grove | town | 2150 |
| Oakdale | town | 772 |
| Oakfield | town | 703 |
| Oconomowoc | town | 8408 |
| Oconto | town | 1335 |
| Oconto Falls | town | 1265 |
| Ocontofalls | ||
| Odanah | ||
| Ogdensburg | village | 185 |
| Ogema | town | 713 |
| Ojibwa | town | 249 |
| Okauchee | ||
| Oma | town | 289 |
| Omro | town | 2116 |
| Onalaska | town | 5623 |
| Oneida | town | 4678 |
| Oneida Indian Reservation | ||
| Ontario | village | 554 |
| Oostburg | village | 2887 |
| Oregon | town | 3184 |
| Orfordville | village | 1442 |
| Osceola | town | 2855 |
| Oshkosh | town | 2475 |
| Osseo | city | 1701 |
| Owen | city | 940 |
| Oxford | town | 885 |
Browse WI Cities by Letter
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