| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Amafor, Obuno | 402102 |
| Postal/ZIP Codes in Amankwo, Obuno | 402102 |
| Postal/ZIP Codes in Ekeaku, Obuno | 402102 |
| Postal/ZIP Codes in Ndiagu-Nnajiori, Obuno | 402102 |
| Postal/ZIP Codes in Njwuaja, Obuno | 402102 |
| Postal/ZIP Codes in Onuobo, Obuno | 402102 |
| Postal/ZIP Codes in Onuorie, Obuno | 402102 |
| Postal/ZIP Codes in Ubogu, Obuno | 402102 |