| Place | Post Code |
|---|---|
| Ega, Oria | 311102 |
| Eguare-Oria, Oria | 311102 |
| Ifade, Oria | 311102 |
| Igo, Oria | 311102 |
| Isoko Camp, Oria | 311102 |
| Itoya Camp, Oria | 311102 |
| John Smike Camp, Oria | 311102 |
| Ogbokpa, Oria | 311102 |
| Okoyoyomon Camp, Oria | 311102 |
| Okudu, Oria | 311102 |
| Omuakun, Oria | 311102 |
| Oria, Oria | 311102 |
| Thomas Camp, Oria | 311102 |
| Ukpowada, Oria | 311102 |