The following are the zip codes in the municipalities of Catanduanes.
| Region | Provinces | City/Municipality | Zip Code |
| Region 5 (Bicol Region) | Catanduanes | Bagamanoc | 4807 |
| Region 5 (Bicol Region) | Catanduanes | Baras | 4803 |
| Region 5 (Bicol Region) | Catanduanes | Bato | 4801 |
| Region 5 (Bicol Region) | Catanduanes | Caramoran | 4808 |
| Region 5 (Bicol Region) | Catanduanes | Gigmoto | 4804 |
| Region 5 (Bicol Region) | Catanduanes | Pandan | 4809 |
| Region 5 (Bicol Region) | Catanduanes | Panganiban | 4806 |
| Region 5 (Bicol Region) | Catanduanes | San Andres | 4810 |
| Region 5 (Bicol Region) | Catanduanes | San Miguel | 4802 |
| Region 5 (Bicol Region) | Catanduanes | Viga | 4805 |
| Region 5 (Bicol Region) | Catanduanes | Virac | 4800 |
