| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ugol-tong | city | Jeju | Korea, Republic of (South) | 33.28 | 126.27 | 219 | 12177 |
| Uhae-dong | city | Jeju | Korea, Republic of (South) | 33.50 | 126.97 | 3 | 863 |
| Umbu-dong | city | Jeju | Korea, Republic of (South) | 33.35 | 126.27 | 830 | 16010 |
| Unam-dong | city | Jeju | Korea, Republic of (South) | 33.26 | 126.38 | 830 | 20610 |
| Uryeongi | city | Jeju | Korea, Republic of (South) | 33.49 | 126.43 | 173 | 41553 |
| Uryŏngi | city | Jeju | Korea, Republic of (South) | 33.49 | 126.43 | 173 | 41553 |
| Uthwajon | city | Jeju | Korea, Republic of (South) | 33.35 | 126.40 | 1994 | 20126 |