| Place | Post Code |
|---|---|
| Achiagu, Achi | 401147 |
| Adu, Achi | 401147 |
| Agbadalna, Achi | 401147 |
| Ahani, Achi | 401147 |
| Akwu, Achi | 401147 |
| Amaetit, Achi | 401147 |
| Amankpunator, Achi | 401147 |
| Egwu Achi, Achi | 401147 |
| Elhuhe, Achi | 401147 |
| Enugu Achi, Achi | 401147 |
| Ihe, Achi | 401147 |
| Isikwe, Achi | 401147 |
| Nkpokoro, Achi | 401147 |
| Umumba, Achi | 401147 |
| All postal codes in Oji River | |
|---|---|
| Achi, Oji River | |
| Akpugeze, Oji River | |
| Awlaw, Oji River | |
| Inyi, Oji River | |
| Ojo River, Oji River | |
| Ugwuoba, Oji River | |