| Place | Post Code |
|---|---|
| Pasay, Maasin | 6600 |
| Pinascohan, Maasin | 6600 |
| Rizal, Maasin | 6600 |
| San Agustin, Maasin | 6600 |
| San Isidro, Maasin | 6600 |
| San Jose, Maasin | 6600 |
| San Rafael, Maasin | 6600 |
| Santa Cruz, Maasin | 6600 |
| Santa Rosa, Maasin | 6600 |
| Santo Niño, Maasin | 6600 |
| Santo Rosario, Maasin | 6600 |
| Soro-Soro, Maasin | 6600 |
| Tagnipa, Maasin | 6600 |
| Tam-Is, Maasin | 6600 |
| Tawid, Maasin | 6600 |
| Tigbawan, Maasin | 6600 |
| Tomoy-Tomoy, Maasin | 6600 |
| Tunga-Tunga, Maasin | 6600 |