| Place | Post Code |
|---|---|
| Oza, Ubiaja (Rural) | 311101 |
| Ozigbo, Ubiaja (Rural) | 311101 |
| Ubiaja, Ubiaja (Rural) | 311101 |
| Udakpa-Ogbenye, Ubiaja (Rural) | 311101 |
| Ugbenin, Ubiaja (Rural) | 311101 |
| Ugbo Camp, Ubiaja (Rural) | 311101 |
| Uhe, Ubiaja (Rural) | 311101 |
| Ukhuanlen, Ubiaja (Rural) | 311101 |
| Ukpaja, Ubiaja (Rural) | 311101 |
| Uokha, Ubiaja (Rural) | 311101 |