7 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Independence | Kenton County | 29,983 |
| Indian Hills | Jefferson County | 2,832 |
| Irvine | Estill County | 2,237 |
| Irvington | Breckinridge County | 1,401 |
| Ironville | Boyd County | 919 |
| Inez | Martin County | 497 |
| Island | McLean County | 439 |