| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ucon | city | Idaho | United States | 43.59639 | -111.96306 | 4803 | 6484 |
| Ulysses historical | city | Idaho | United States | 45.45778 | -114.15056 | 4612 | 56 |
| Underkoflers Corner | city | Idaho | United States | 43.61917 | -116.67167 | 2483 | 21358 |
| Unity | city | Idaho | United States | 42.51861 | -113.7425 | 4140 | 8051 |
| Upper Crossing | city | Idaho | United States | 45.64444 | -114.70611 | 4599 | 14 |
| Ustick | city | Idaho | United States | 43.63361 | -116.32083 | 2664 | 77201 |
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