| Place | Post Code |
|---|---|
| Egbokor, Oloten | 301102 |
| Evbodamwen, Oloten | 301102 |
| Evbodogun, Oloten | 301102 |
| Evbodohian, Oloten | 301102 |
| Evbohighae, Oloten | 301102 |
| Evbokabua, Oloten | 301102 |
| Evbomede I & II, Oloten | 301102 |
| Idunmunlaka, Oloten | 301102 |
| Iguiya, Oloten | 301102 |
| Iyoba, Oloten | 301102 |
| Ohezenaka, Oloten | 301102 |
| Oloten, Oloten | 301102 |
| Otobayi I & II, Oloten | 301102 |
| Owe, Oloten | 301102 |
| Ugbedun, Oloten | 301102 |
| Ugbeka, Oloten | 301102 |
| Uson, Oloten | 301102 |
| Ute, Oloten | 301102 |
| All postal codes in Orhionmwon | |
|---|---|
| Aibiokunla, Orhionmwon | |
| Igbanke, Orhionmwon | |
| Oloten, Orhionmwon | |
| Ugboko, Orhionmwon | |
| Ugu, Orhionmwon | |
| Urho-Nigbe, Orhionmwon | |