| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| 효계울 | city | Gyeonggi | Korea, Republic of (South) | 37.87 | 126.96 | 410 | 28852 |
| 효대박이 | city | Gyeonggi | Korea, Republic of (South) | 37.82 | 127.26 | 1069 | 42339 |
| 효자동 | city | Gyeonggi | Korea, Republic of (South) | 37.67 | 126.97 | 1669 | 406793 |
| 효자동 (Hyojadong) | city | Gyeonggi | Korea, Republic of (South) | 37.67 | 126.97 | 1669 | 406793 |
| 효자리 | city | Gyeonggi | Korea, Republic of (South) | 37.32 | 127.55 | 187 | 30972 |
| 효자비 | city | Gyeonggi | Korea, Republic of (South) | 37.67 | 126.96 | 830 | 375564 |
| 효죽 | city | Gyeonggi | Korea, Republic of (South) | 37.14 | 127.49 | 344 | 8344 |
| 효죽 | city | Gyeonggi | Korea, Republic of (South) | 37.82 | 127.26 | 1069 | 42339 |
| 효지 | city | Gyeonggi | Korea, Republic of (South) | 37.33 | 127.55 | 180 | 23209 |
| 효촌리 | city | Gyeonggi | Korea, Republic of (South) | 37.88 | 126.95 | 383 | 25400 |
| 효학동 | city | Gyeonggi | Korea, Republic of (South) | 37.01 | 127.03 | 13 | 107729 |