9 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Upland | Grant County | 3,821 |
| Union City | Randolph County | 3,430 |
| Utica | Clark County | 1,436 |
| Underwood | Scott County | 1,403 |
| Universal | Vermillion County | 285 |
| Uniondale | Wells County | 278 |
| Union Mills | LaPorte County | 196 |
| Urbana | Wabash County | 135 |
| Ulen | Boone County | 116 |