| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| 성안 | city | Incheon | Korea, Republic of (South) | 37.58 | 126.72 | 91 | 388080 |
| 성안 | city | Jeonnam | Korea, Republic of (South) | 34.78 | 127.31 | 108 | 11645 |
| 성안 | city | Gangwon | Korea, Republic of (South) | 37.31 | 128.25 | 1738 | 99 |
| 성안 | city | Chungnam | Korea, Republic of (South) | 36.82 | 126.67 | 91 | 15905 |
| 성안리 | city | Hamnam | Korea, Dem. Peoples Rep. of (North) | 39.72 | 127.29 | 157 | 22054 |
| 성안말 | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 39.86 | 124.78 | 29 | 20711 |
| 성안말 | city | Hamnam | Korea, Dem. Peoples Rep. of (North) | 39.88 | 127.35 | 252 | 13037 |
| 성안말 | city | Chungnam | Korea, Republic of (South) | 36.77 | 127.03 | 32 | 66432 |