| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sihaengi | city | Chungnam | Korea, Republic of (South) | 36.46 | 127.19 | 236 | 41536 |
| Siheung-dong | city | Seoul | Korea, Republic of (South) | 37.45 | 126.91 | 272 | 1273131 |
| Siheungdong | city | Seoul | Korea, Republic of (South) | 37.45 | 126.91 | 272 | 1273131 |
| Siheungdong | city | Gyeonggi | Korea, Republic of (South) | 37.42 | 127.09 | 255 | 828452 |
| Sihung | city | Jeju | Korea, Republic of (South) | 33.47 | 126.90 | 16 | 9353 |
| Sihung | city | Gyeonggi | Korea, Republic of (South) | 37.42 | 127.09 | 255 | 828452 |
| Sihung-dong | city | Gyeonggi | Korea, Republic of (South) | 37.42 | 127.09 | 255 | 828452 |
| Sihung-ni | city | Seoul | Korea, Republic of (South) | 37.45 | 126.91 | 272 | 1273131 |
| Sihung-ni | city | Gyeonggi | Korea, Republic of (South) | 37.42 | 127.09 | 255 | 828452 |
| Sihwasan | city | Chungnam | Korea, Republic of (South) | 36.41 | 127.18 | 236 | 19935 |
| Sihŭl-li | city | Chungnam | Korea, Republic of (South) | 36.90 | 127.14 | 62 | 76180 |
| Sihŭng | city | Gyeonggi | Korea, Republic of (South) | 37.37 | 126.81 | 95 | 343754 |
| Sihŭng-ni | city | Jeju | Korea, Republic of (South) | 33.47 | 126.90 | 16 | 9353 |