Oya Estate, situated in Lagos State, uses the postal code 100274.
Here is the postal code for the streets in Oya Estate.
| Place/Street | Postal Code |
| Police barracks St. | 100274 |
| Abeokuta Ewy St. | 100274 |
| Aipo St. St. | 100274 |
| Ajiboye Cr. St. | 100274 |
| Akowonjo Rd. St. | 100274 |
| Alafia St. St. | 100274 |
| Amoda St. St. | 100274 |
| Ayodo st. St. | 100274 |
| Balogun St. St. | 100274 |
| Christ Church Rd. St. | 100274 |
| Fadeyi St. St. | 100274 |
| Fagbola St. St. | 100274 |
| Idowu St. St. | 100274 |
| Ifeloju St. St. | 100274 |
| Jaccbe St. St. | 100274 |
| Kabiowu St. St. | 100274 |
| Kadiri St. St. | 100274 |
| Kokumo St. St. | 100274 |
| Lorunsi St. St. | 100274 |
| Morolahan St. St. | 100274 |
| Mosili St. St. | 100274 |
| O. Seriki Rd. St. | 100274 |
| Oladejo Rd. St. | 100274 |
| Olajobi St. St. | 100274 |
| Olarewaju St. St. | 100274 |
| Old Abeokuta Rd. St. | 100274 |
| Old Ota Rd. St. | 100274 |
| Olumide St. St. | 100274 |
| Oluwole St. St. | 100274 |
| Omisore St. St. | 100274 |
| Omolewa Moses St. St. | 100274 |
| Oremeji St. St. | 100274 |
| Power Line St. St. | 100274 |
| Sadiku St. St. | 100274 |
| Saretimi St. St. | 100274 |
| Saurulere St. St. | 100274 |
| Solaja St. St. | 100274 |
| Tode Rd. St. | 100274 |