| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Egbaen, Oluku | 302117 |
| Postal/ZIP Codes in Iguosa, Oluku | 302117 |
| Postal/ZIP Codes in Okhumwun, Oluku | 302117 |
| Postal/ZIP Codes in Olefure, Oluku | 302117 |
| Postal/ZIP Codes in Oluku, Oluku | 302117 |
| Postal/ZIP Codes in Uhogua, Oluku | 302117 |
| Postal/ZIP Codes in Utekon, Oluku | 302117 |