| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Yanghwa-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.55 | 126.9 | 3 | 1432058 |
| Yangp'yong-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9333333 | 3 | 2056407 |
| Yangp'yŏng-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9333333 | 3 | 2056407 |
| Yeitoho | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5166667 | 126.9 | 45 | 1872890 |
| Yoido-jong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9166667 | 52 | 2056407 |
| Yon-ch'on | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.6166667 | 127.05 | 72 | 2005203 |
| Yongdu-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5833333 | 127.0333333 | 62 | 2091980 |
| Yongdujong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5833333 | 127.0333333 | 62 | 2091980 |
| Yongdujŏng | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5833333 | 127.0333333 | 62 | 2091980 |
| Yongdungp'o | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5166667 | 126.9 | 45 | 1872890 |
| Yongdungp'o-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5166667 | 126.9 | 45 | 1872890 |
| Yongdŭngp'o | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5166667 | 126.9 | 45 | 1872890 |
| Yonggang-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.95 | 55 | 2056407 |
| Yonggang-jong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.95 | 55 | 2056407 |
| Yonggang-jŏng | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.95 | 55 | 2056407 |
| Yongsan | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9666667 | 72 | 2118921 |
| Youi-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9166667 | 52 | 2056407 |
| Youido-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9166667 | 52 | 2056407 |
| Youidojong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9166667 | 52 | 2056407 |
| Yŏido-jŏng | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9166667 | 52 | 2056407 |
| Yŏn-ch'on | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.6166667 | 127.05 | 72 | 2005203 |
| Yŏngdŭngp'o | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5166667 | 126.9 | 45 | 1872890 |
| Yŏngdŭngp'o-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5166667 | 126.9 | 45 | 1872890 |
| Yŏŭi-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9166667 | 52 | 2056407 |
| Yŏŭido-dong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9166667 | 52 | 2056407 |
| Yŏŭidojŏng | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5333333 | 126.9166667 | 52 | 2056407 |