| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Amaimo, Umuhu-Okabia | 473105 |
| Postal/ZIP Codes in Ofeahia, Umuhu-Okabia | 473105 |
| Postal/ZIP Codes in Ofeke, Umuhu-Okabia | 473105 |
| Postal/ZIP Codes in Okwu, Umuhu-Okabia | 473105 |
| Postal/ZIP Codes in Uhuala, Umuhu-Okabia | 473105 |
| Postal/ZIP Codes in Umuerem, Umuhu-Okabia | 473105 |
| Postal/ZIP Codes in Umunabochi, Umuhu-Okabia | 473105 |