| Place | Post Code |
|---|---|
| Eguare-Ubiaja, Ubiaja (Rural) | 311101 |
| Eko-Bekor, Ubiaja (Rural) | 311101 |
| Erhomosele Camp, Ubiaja (Rural) | 311101 |
| Evbohen, Ubiaja (Rural) | 311101 |
| Evbovobanosa, Ubiaja (Rural) | 311101 |
| Idigun, Ubiaja (Rural) | 311101 |
| Idohanelen, Ubiaja (Rural) | 311101 |
| Idomehan, Ubiaja (Rural) | 311101 |
| Idumebor, Ubiaja (Rural) | 311101 |
| Idumogbo, Ubiaja (Rural) | 311101 |
| Idumoshodin, Ubiaja (Rural) | 311101 |
| Idumosoh, Ubiaja (Rural) | 311101 |
| Idumowemhen, Ubiaja (Rural) | 311101 |
| Igbira Camp, Ubiaja (Rural) | 311101 |
| Iru, Ubiaja (Rural) | 311101 |
| Lepper Settlement, Ubiaja (Rural) | 311101 |
| Obeko Camp, Ubiaja (Rural) | 311101 |
| Ogan, Ubiaja (Rural) | 311101 |
| Ogbeor, Ubiaja (Rural) | 311101 |
| Ogheyn, Ubiaja (Rural) | 311101 |
| Oko-Eseme Camp, Ubiaja (Rural) | 311101 |
| Oruen, Ubiaja (Rural) | 311101 |
| Oruhen Udai, Ubiaja (Rural) | 311101 |
| Ossiomo, Ubiaja (Rural) | 311101 |
| Owa, Ubiaja (Rural) | 311101 |
| Oyomon, Ubiaja (Rural) | 311101 |