| Place | Post Code |
|---|---|
| Obigbo, Ekwereazu Town | 463113 |
| Obizi, Ekwereazu Town | 463113 |
| Obokofia, Ekwereazu Town | 463113 |
| Obom-Ukw, Ekwereazu Town | 463113 |
| Oborottu, Ekwereazu Town | 463113 |
| Oforla, Ekwereazu Town | 463113 |
| Ojiukwu, Ekwereazu Town | 463113 |
| Opuoma, Ekwereazu Town | 463113 |
| Ose-Abacheke, Ekwereazu Town | 463113 |
| Ose-Mmahu, Ekwereazu Town | 463113 |
| Ose-Orji, Ekwereazu Town | 463113 |
| Ubaba, Ekwereazu Town | 463113 |
| Ubomukwu, Ekwereazu Town | 463113 |
| Ugada, Ekwereazu Town | 463113 |
| Ukwugbe, Ekwereazu Town | 463113 |
| Umuodike, Ekwereazu Town | 463113 |
| Umuowku, Ekwereazu Town | 463113 |
| Unuojo, Ekwereazu Town | 463113 |