8 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Ixonia | Jefferson County | 2,174 |
| Independence | Trempealeau County | 1,462 |
| Iola | Waupaca County | 1,170 |
| Iron Ridge | Dodge County | 917 |
| Iron River | Bayfield County | 684 |
| Ironton | Juneau County | 262 |
| Iron Belt | Iron County | 174 |
| Ingram | Rusk County | 69 |