| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Amaekpu, Umuoha | 451103 |
| Postal/ZIP Codes in Amapu, Umuoha | 451103 |
| Postal/ZIP Codes in Amaputa, Umuoha | 451103 |
| Postal/ZIP Codes in Eziama-Uratta, Umuoha | 451103 |
| Postal/ZIP Codes in Ichi, Umuoha | 451103 |
| Postal/ZIP Codes in Umarandu-Uratta, Umuoha | 451103 |