| Place | Postal Code |
|---|---|
| Akola, Osu | 233102 |
| Alakowe, Osu | 233102 |
| Alusekere, Osu | 233102 |
| Aro-Aji, Osu | 233102 |
| Ayorunbo, Osu | 233102 |
| Balogun, Osu | 233102 |
| Bara, Osu | 233102 |
| Iloba, Osu | 233102 |
| Itamerin, Osu | 233102 |
| Iwaro, Osu | 233102 |
| Odesomi, Osu | 233102 |
| Orogo, Osu | 233102 |
| Osu, Osu | 233102 |