| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Ezema, Aguobu-Umuaji | 401130 |
| Postal/ZIP Codes in Ogwofia, Aguobu-Umuaji | 401130 |
| Postal/ZIP Codes in Ozom, Aguobu-Umuaji | 401130 |
| Postal/ZIP Codes in Umiaji, Aguobu-Umuaji | 401130 |
| Postal/ZIP Codes in Umudim, Aguobu-Umuaji | 401130 |