| Place | Post Code |
|---|---|
| Atilano L. Ricardo, Bagac | 2107 |
| Bagumbayan, Bagac | 2107 |
| Banawang, Bagac | 2107 |
| Binuangan, Bagac | 2107 |
| Binukawan, Bagac | 2107 |
| Ibaba, Bagac | 2107 |
| Ibis, Bagac | 2107 |
| Pag-asa, Bagac | 2107 |
| Parang, Bagac | 2107 |
| Paysawan, Bagac | 2107 |
| Quinawan, Bagac | 2107 |
| San Antonio, Bagac | 2107 |
| Saysain, Bagac | 2107 |
| Tabing-Ilog, Bagac | 2107 |