| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Akwalihu, Osumoghu | 431123 |
| Postal/ZIP Codes in Amadunu, Osumoghu | 431123 |
| Postal/ZIP Codes in Ebenator, Osumoghu | 431123 |
| Postal/ZIP Codes in Eziala, Osumoghu | 431123 |
| Postal/ZIP Codes in Ihuoweri, Osumoghu | 431123 |
| Postal/ZIP Codes in Initesha, Osumoghu | 431123 |
| Postal/ZIP Codes in Isungwu, Osumoghu | 431123 |
| Postal/ZIP Codes in Ogunmabiri, Osumoghu | 431123 |
| Postal/ZIP Codes in Umudi, Osumoghu | 431123 |