| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Akpanam, Osso-Mala | 431111 |
| Postal/ZIP Codes in Igbuzor, Osso-Mala | 431111 |
| Postal/ZIP Codes in Isoru, Osso-Mala | 431111 |
| Postal/ZIP Codes in Ndam, Osso-Mala | 431111 |
| Postal/ZIP Codes in Ogwasiji, Osso-Mala | 431111 |
| Postal/ZIP Codes in Ugolo, Osso-Mala | 431111 |
| Postal/ZIP Codes in Umichi, Osso-Mala | 431111 |
| Postal/ZIP Codes in Umobo, Osso-Mala | 431111 |
| Postal/ZIP Codes in Umuonyogwu, Osso-Mala | 431111 |