| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Amaetiti, Oyofo | 401140 |
| Postal/ZIP Codes in Imama, Oyofo | 401140 |
| Postal/ZIP Codes in Ndiabo, Oyofo | 401140 |
| Postal/ZIP Codes in Obiagu, Oyofo | 401140 |
| Postal/ZIP Codes in Umuanaobu, Oyofo | 401140 |
| Postal/ZIP Codes in Umuani, Oyofo | 401140 |
| Postal/ZIP Codes in Umuohaoku, Oyofo | 401140 |