| Place | Post Code |
|---|---|
| Afokolo, Idoa | 310104 |
| Atologa, Idoa | 310104 |
| Ebhoigbon, Idoa | 310104 |
| Iwere, Idoa | 310104 |
| Ofie, Idoa | 310104 |
| Otaika, Idoa | 310104 |
| Ubi, Idoa | 310104 |
| Urhobo-Alamu Camp, Idoa | 310104 |
| All postal codes in Esan West | |
|---|---|
| Eghoro, Esan West | |
| Ekpoma, Esan West | |
| Idoa, Esan West | |
| Naoka, Esan West | |
| Ogwa, Esan West | |
| Ujiogba, Esan West | |
| Ukhun, Esan West | |
| Urohi, Esan West | |