The following are the zip codes in the municipalities of Dinagat Island.
| Region | Provinces | City/Municipality | Zip Code |
| Region 13 (CARAGA) | Dinagat Island | Basilisa (formerly Rizal) | 8413 |
| Region 13 (CARAGA) | Dinagat Island | Cagdianao | 8411 |
| Region 13 (CARAGA) | Dinagat Island | Dinagat | 8412 |
| Region 13 (CARAGA) | Dinagat Island | Libjo (formerly Albor) | 8414 |
| Region 13 (CARAGA) | Dinagat Island | Loreto | 8415 |
| Region 13 (CARAGA) | Dinagat Island | San Jose | 8427 |
| Region 13 (CARAGA) | Dinagat Island | Tubajon | 8426 |
