| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oya-dong | city | Gyeonggi | Korea, Republic of (South) | 37.45 | 127.14 | 226 | 1019163 |
| Oyadong | city | Gyeonggi | Korea, Republic of (South) | 37.72 | 126.99 | 830 | 134977 |
| Oyagok | city | Gyeonggi | Korea, Republic of (South) | 37.50 | 127.19 | 830 | 630377 |
| Oyagok | city | Gyeonggi | Korea, Republic of (South) | 37.50 | 127.19 | 830 | 630377 |
| Oyakkol | city | Gyeonggi | Korea, Republic of (South) | 37.18 | 126.69 | 170 | 4940 |
| Oyaso | city | Gyeonggi | Korea, Republic of (South) | 37.41 | 127.13 | 255 | 764472 |
| Oyasu | city | Gyeonggi | Korea, Republic of (South) | 37.46 | 127.22 | 830 | 149414 |
| Oyatgamagol | city | Gyeonggi | Korea, Republic of (South) | 37.73 | 127.21 | 830 | 71928 |
| Oyatmaeul | city | Gyeonggi | Korea, Republic of (South) | 37.70 | 127.17 | 213 | 123477 |
| Oyong-dong | city | Gyeonggi | Korea, Republic of (South) | 37.67 | 126.82 | 98 | 293279 |
| Oyŏn-ni | city | Gyeonggi | Korea, Republic of (South) | 37.05 | 126.98 | 26 | 38363 |