List of cities in Wisconsin List of cities List of cities

| City | Countyies | Population_2000_Census | Population_2010_Census | Class_ | Incorporation_date_ |
|---|---|---|---|---|---|
| Oconto Falls | Oconto | 2843 | 2891 | 4th | 1919 |
| Omro | Winnebago | 3177 | 3517 | 4th | 1944 |
| Onalaska | La Crosse | 14839 | 17736 | 4th | 1887 |
| Oshkosh | Winnebago | 62916 | 66083 | 2nd | 1853 |
| Osseo | Trempealeau | 1669 | 1701 | 4th | 1941 |
| Owen | Clark | 936 | 940 | 4th | 1925 |
| Park Falls | Price | 2739 | 2462 | 4th | 1912 |
| Peshtigo | Marinette | 3474 | 3502 | 4th | 1903 |
| Pewaukee | Waukesha | 11783 | 13195 | 3rd | 1999 |
| Phillips | Price | 1675 | 1478 | 4th | 1891 |
| Pittsville | Wood | 866 | 874 | 4th | 1887 |
| Platteville | Grant | 9989 | 11224 | 4th | 1876 |
| Plymouth | Sheboygan | 7781 | 8445 | 4th | 1877 |
| Port Washington | Ozaukee | 10467 | 11250 | 4th | 1882 |
| Portage | Columbia | 9728 | 10324 | 4th | 1854 |
| Prairie du Chien | Crawford | 6018 | 5911 | 4th | 1872 |