Njaba Local Government Area in Imo State uses postal codes ranging from 474123 to 474128.
Here are the postal codes for the towns and districts in Njaba:
Amucha
| Location | Postcode |
| Aguwa | 474127 |
| Duriaku | 474127 |
| Duroboaku | 474127 |
| Duruewuru | 474127 |
| Duruigwe | 474127 |
| Ebeasaa | 474127 |
| Ebeise | 474127 |
| Eziene | 474127 |
| Umuduruoka | 474127 |
| Umunudo | 474127 |
| Umunzu | 474127 |
| Umuokpoko | 474127 |
| Umuokwara | 474127 |
| Umuoma | 474127 |
| Umuorji | 474127 |
| Umuzikeabum | 474127 |
Atta
| Location | Postcode |
| Egwedu | 474128 |
| Eziuba | 474128 |
| Isiekwe | 474128 |
| Ohima | 474128 |
| Ubokoro | 474128 |
| Ubudom | 474128 |
| Ugbele | 474128 |
| Umuerim | 474128 |
| Umumanu | 474128 |
| Umunam | 474128 |
| Umuoke | 474128 |
Okwudor
| Location | Postcode |
| Abazu | 474124 |
| Umuawi | 474124 |
| Umudirogha | 474124 |
| Umuelem | 474124 |
| Umuneke | 474124 |
| Umuofeke | 474124 |
| Umuokwara | 474124 |
| Umuseke | 474124 |
Umuaka
| Location | Postcode |
| Achara | 474123 |
| Amafor | 474123 |
| Amainyi | 474123 |
| Amakor | 474123 |
| Ibele | 474123 |
| Isiozi | 474123 |
| Obeakpu | 474123 |
| Ogbele | 474123 |
| Uba | 474123 |
| Umuele | 474123 |