Towns
| State | City/Town | Town Title |
|---|---|---|
| Wisconsin | Iron Belt | Iron Belt, WI |
| Wisconsin | Iron Ridge | Iron Ridge, WI |
| Wisconsin | Iron River | Iron River, WI |
| Wisconsin | Ixonia | Ixonia, WI |
| Wisconsin | Jackson | Jackson, WI |
| Wisconsin | Janesville | Janesville, WI |
| Wisconsin | Jefferson | Jefferson, WI |
| Wisconsin | Jim Falls | Jim Falls, WI |
| Wisconsin | Johnson Creek | Johnson Creek, WI |
| Wisconsin | Juda | Juda, WI |
| Wisconsin | Jump River | Jump River, WI |
| Wisconsin | Junction City | Junction City, WI |
| Wisconsin | Juneau | Juneau, WI |
| Wisconsin | Kansasville | Kansasville, WI |
| Wisconsin | Kaukauna | Kaukauna, WI |
| Wisconsin | Kellnersville | Kellnersville, WI |
| Wisconsin | Kendall | Kendall, WI |
| Wisconsin | Kennan | Kennan, WI |
| Wisconsin | Kenosha | Kenosha, WI |
| Wisconsin | Keshena | Keshena, WI |
| Wisconsin | Kewaskum | Kewaskum, WI |
| Wisconsin | Kewaunee | Kewaunee, WI |
| Wisconsin | Kiel | Kiel, WI |
| Wisconsin | Kieler | Kieler, WI |
| Wisconsin | Kimberly | Kimberly, WI |