| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Uam | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.4297222 | 126.6502778 | 62 | 521300 |
| Ulnegi | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.7163889 | 126.4691667 | 52 | 80557 |
| Um-ch'on | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.8077778 | 126.4372222 | 232 | 46434 |
| Umullek-kol | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.8066667 | 126.2575 | 32 | 31310 |
| Unggok | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.8055556 | 126.4063889 | 311 | 38792 |
| Unhaeng-mal | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.675 | 126.1780556 | 0 | 7845 |
| Unhaeng-ni | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.675 | 126.1780556 | 0 | 7845 |
| Up'o-ri | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.2397222 | 126.1041667 | 291 | 18982 |
| Uroe | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.7911111 | 126.4763889 | 0 | 61430 |