| Place | Post Code |
|---|---|
| Akama, Akwu | 434113 |
| Ekele, Akwu | 434113 |
| Umuibu, Akwu | 434113 |
| Umuosiukpana, Akwu | 434113 |
| All postal codes in Idemili South | |
|---|---|
| Akwa-Etiti, Idemili South | |
| Akwu, Idemili South | |
| Alor, Idemili South | |
| Nnobi, Idemili South | |
| Nnokwa, Idemili South | |
| Oba, Idemili South | |
| Ojoto, Idemili South | |