| Place | Post Code |
|---|---|
| Agulu, Obelagu-Umana | 401128 |
| Aguoba-Obelagu, Obelagu-Umana | 401128 |
| Evazu, Obelagu-Umana | 401128 |
| Okpuata, Obelagu-Umana | 401128 |
| Okpudo, Obelagu-Umana | 401128 |
| Omughu, Obelagu-Umana | 401128 |
| Ozono, Obelagu-Umana | 401128 |
| Ugwuakulu, Obelagu-Umana | 401128 |
| Umuagbo, Obelagu-Umana | 401128 |
| Umuakan, Obelagu-Umana | 401128 |
| Umuene, Obelagu-Umana | 401128 |
| Umueze Amaji, Obelagu-Umana | 401128 |
| Umusulu, Obelagu-Umana | 401128 |