| Municipality | ZIP Code |
|---|---|
| Cabagan | 3328 |
| Location | Municipality | Province | Region | ZIP Code |
|---|---|---|---|---|
| San Bernardo | Cabagan | Isabela | Cagayan Valley | 3328 |
| San Juan | Cabagan | Isabela | Cagayan Valley | 3328 |
| Saui | Cabagan | Isabela | Cagayan Valley | 3328 |
| Tallag | Cabagan | Isabela | Cagayan Valley | 3328 |
| Ugad | Cabagan | Isabela | Cagayan Valley | 3328 |
| Union | Cabagan | Isabela | Cagayan Valley | 3328 |
