| Place | Post Code |
|---|---|
| Abaki, Ikwuo Rieator | 452105 |
| Akanu, Ikwuo Rieator | 452105 |
| Mkpukpuaja, Ikwuo Rieator | 452105 |
| Mkpukpule, Ikwuo Rieator | 452105 |
| Obuozu, Ikwuo Rieator | 452105 |
| Ogbuagu, Ikwuo Rieator | 452105 |
| Ohaobu, Ikwuo Rieator | 452105 |
| Umuogor, Ikwuo Rieator | 452105 |