| Municipality | ZIP Code |
|---|---|
| Gainza | 4412 |
| Location | Municipality | Province | Region | ZIP Code |
|---|---|---|---|---|
| Cagbunga | Gainza | Camarines Sur | Bicol Region | 4412 |
| Dahilig | Gainza | Camarines Sur | Bicol Region | 4412 |
| District I | Gainza | Camarines Sur | Bicol Region | 4412 |
| District II | Gainza | Camarines Sur | Bicol Region | 4412 |
| Loob | Gainza | Camarines Sur | Bicol Region | 4412 |
| Malbong | Gainza | Camarines Sur | Bicol Region | 4412 |
| Namuat | Gainza | Camarines Sur | Bicol Region | 4412 |
| Sampaloc | Gainza | Camarines Sur | Bicol Region | 4412 |
