| Place | Post Code |
|---|---|
| Bacolod, Irosin | 4707 |
| Bagsangan, Irosin | 4707 |
| Batang, Irosin | 4707 |
| Bolos, Irosin | 4707 |
| Buenavista, Irosin | 4707 |
| Bulawan, Irosin | 4707 |
| Carriedo, Irosin | 4707 |
| Casini, Irosin | 4707 |
| Cawayan, Irosin | 4707 |
| Cogon, Irosin | 4707 |
| Gabao, Irosin | 4707 |
| Gulang-Gulang, Irosin | 4707 |
| Gumapia, Irosin | 4707 |
| Liang, Irosin | 4707 |
| Macawayan, Irosin | 4707 |
| Mapaso, Irosin | 4707 |
| Monbon, Irosin | 4707 |
| Patag, Irosin | 4707 |
| Salvacion, Irosin | 4707 |
| San Agustin, Irosin | 4707 |
| San Isidro, Irosin | 4707 |
| San Juan, Irosin | 4707 |
| San Julian, Irosin | 4707 |
| San Pedro, Irosin | 4707 |
| Santo Domingo, Irosin | 4707 |
| Tabon-Tabon, Irosin | 4707 |