| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Amaeke, Oruku | 402116 |
| Postal/ZIP Codes in Eziobodo, Oruku | 402116 |
| Postal/ZIP Codes in Isiewu, Oruku | 402116 |
| Postal/ZIP Codes in Ndiaguagu, Oruku | 402116 |
| Postal/ZIP Codes in Obinagu, Oruku | 402116 |
| Postal/ZIP Codes in Ohuani, Oruku | 402116 |