| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Och'on-dong | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.805 | 126.4219444 | 42 | 46434 |
| Okchuk-tong | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.8425 | 124.7075 | 180 | 3694 |
| Okkye | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.7608333 | 126.5086111 | 9 | 50445 |
| Omi | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.8086111 | 126.2358333 | 22 | 28206 |
| Omi | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.8077778 | 126.2391667 | 32 | 28206 |
| Ongam-ni | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.5319444 | 126.3733333 | 3 | 72340 |
| Onsu-ri | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.6397222 | 126.4919444 | 78 | 74635 |
| Onsugok | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.6397222 | 126.4919444 | 78 | 74635 |
| Onsui | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.6397222 | 126.4919444 | 78 | 74635 |
| Onsuiri | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.6397222 | 126.4919444 | 78 | 74635 |
| Oppol | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.2447222 | 126.4436111 | 0 | 14330 |
| Oru | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.0861111 | 125.9572222 | 0 | 2274 |
| Oryujong | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.6530556 | 126.3344444 | 0 | 32128 |
| Oryunae | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.7641667 | 126.4513889 | 108 | 74049 |
| Oryuumul | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.6530556 | 126.3344444 | 0 | 32128 |
| Osumul | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.7733333 | 126.4122222 | 36 | 62154 |
| Oyujong | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.6530556 | 126.3344444 | 0 | 32128 |