| Place | Postal Code |
|---|---|
| Achara, Umuaka | 474123 |
| Amafor, Umuaka | 474123 |
| Amainyi, Umuaka | 474123 |
| Amakor, Umuaka | 474123 |
| Ibele, Umuaka | 474123 |
| Isiozi, Umuaka | 474123 |
| Obeakpu, Umuaka | 474123 |
| Ogbele, Umuaka | 474123 |
| Uba, Umuaka | 474123 |
| Umuele, Umuaka | 474123 |
| Postal Codes in Njaba | |
|---|---|
| Amucha, Njaba | |
| Atta, Njaba | |
| Okwudor, Njaba | |
| Umuaka, Njaba | |