| Place | Post Code |
|---|---|
| Balingayan, Calapan | 5200 |
| Balite, Calapan | 5200 |
| Baruyan, Calapan | 5200 |
| Batino, Calapan | 5200 |
| Bayanan I, Calapan | 5200 |
| Bayanan II, Calapan | 5200 |
| Biga, Calapan | 5200 |
| Bondoc, Calapan | 5200 |
| Bucayao, Calapan | 5200 |
| Buhuan, Calapan | 5200 |
| Bulusan, Calapan | 5200 |
| Calero, Calapan | 5200 |
| Camansihan, Calapan | 5200 |
| Camilmil, Calapan | 5200 |
| Canubing I, Calapan | 5200 |
| Canubing II, Calapan | 5200 |
| Comunal, Calapan | 5200 |
| Guinobatan, Calapan | 5200 |
| Gulod, Calapan | 5200 |
| Gutad, Calapan | 5200 |
| Ibaba East, Calapan | 5200 |
| Ibaba West, Calapan | 5200 |
| Ilaya, Calapan | 5200 |
| Lalud, Calapan | 5200 |
| Lazareto, Calapan | 5200 |
| Libis, Calapan | 5200 |