| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ucon | city | Idaho | United States | 43.60 | -111.96 | 5029 | |
| Ulysses (historical) | city | Idaho | United States | 45.46 | -114.15 | 4612 | |
| Underkoflers Corner | city | Idaho | United States | 43.62 | -116.67 | 2509 | |
| Unity | city | Idaho | United States | 42.52 | -113.74 | 4189 | |
| Upper Crossing | city | Idaho | United States | 45.64 | -114.71 | 4599 | |
| Ustick | city | Idaho | United States | 43.63 | -116.32 | 2657 |