| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| 서계 | city | Jeonbuk | Korea, Republic of (South) | 36.00 | 127.05 | 98 | 76523 |
| 서계 | city | Chungbuk | Korea, Republic of (South) | 37.08 | 127.89 | 183 | 15720 |
| 서계수 | city | Yanggang | Korea, Dem. Peoples Rep. of (North) | 41.59 | 128.81 | 3694 | 2682 |
| 서계양 | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.44 | 125.19 | 246 | 23904 |
| 서계양리 | city | Chungnam | Korea, Republic of (South) | 36.62 | 126.86 | 101 | 11521 |