| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Abia, Onia Ohafia | 442115 |
| Postal/ZIP Codes in Akanu, Onia Ohafia | 442115 |
| Postal/ZIP Codes in Isiugwu, Onia Ohafia | 442115 |
| Postal/ZIP Codes in Isugwu, Onia Ohafia | 442115 |
| Postal/ZIP Codes in Ndi-Uduma-Awoke, Onia Ohafia | 442115 |