| Place | Post Code |
|---|---|
| Ago-Ogodo, Otuo | 313107 |
| Amohon, Otuo | 313107 |
| Amoya, Otuo | 313107 |
| Imafun, Otuo | 313107 |
| Iyeu, Otuo | 313107 |
| Obo, Otuo | 313107 |
| Ohima, Otuo | 313107 |
| Orake, Otuo | 313107 |
| Osiekpa, Otuo | 313107 |
| Ugba, Otuo | 313107 |
| All postal codes in Owan East | |
|---|---|
| Emai, Owan East | |
| Igue, Owan East | |
| Ihievbe, Owan East | |
| Ikao, Owan East | |
| Ivbi-Mion, Owan East | |
| Ive-Ada-Obi, Owan East | |
| Otuo, Owan East | |
| Uokha, Owan East | |