Oyi is a Local Government Area (LGA) in Anambra State, Nigeria. The postal codes in Oyi are primarily 432107 – 432107.
Here are the postal codes of the streets and districts in Oyi:
Agbunike
| Location | Postcode |
| Amawa | 433107 |
| Azu | 433107 |
| Ifite | 433107 |
| Osile | 433107 |
| Ukalor | 433107 |
| Umueri | 433107 |
Awkuzu
| Location | Postcode |
| Akaezi | 433103 |
| Dusogu | 433103 |
| Ezinkwo | 433103 |
| Igbu | 433103 |
| Iru-Anika | 433103 |
| Otoko | 433103 |
| Ozu | 433103 |
| Umudioka | 433103 |
| Umuobi | 433103 |
Nkwelle
| Location | Postcode |
| Amuche | 433106 |
| Ezi-Nkwelle | 433106 |
| Ifite | 433106 |
| Oze | 433106 |
| Uruabo-Na-Amaeye | 433106 |
Nteje
| Location | Postcode |
| Ezinteje | 433101 |
Umuneba
| Location | Postcode |
| Umuevi | 433102 |
| Achalla | 433102 |
| Agba | 433102 |
| Agwa | 433102 |
| Akpakwu | 433102 |
| Amadiaba | 433102 |
| Amaupa | 433102 |
| Ifite | 433102 |
| Ikenga | 433102 |
| Iruoyim | 433102 |
| Mmuru | 433102 |
| Orukaba | 433102 |
| Umuanunwa | 433102 |
| Umuaza | 433102 |
| Umuejebo | 433102 |
Umunya
| Location | Postcode |
| Ajakpani | 433104 |
| Amaezike | 433104 |
| Eziumunya | 433104 |
| Isioyo | 433104 |
| Odumuode-Ani | 433104 |
| Odumuodenu | 433104 |
| Ojobi | 433104 |
| Okpu | 433104 |
| Ukunu | 433104 |
| Umuebo | 433104 |