About ZIP code 3900
The ZIP code 3900 routes mail to Basco in the Cagayan Valley region of Philippines. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
Philippines ยท ZIP code
3900 - Basco
ZIP code 3900 is Basco in Cagayan Valley, Philippines.
| ZIP code | 3900 |
| Place | Basco |
| Region | Cagayan Valley |
| District | Province of Batanes |
| Country | Philippines (PH) |
| Coordinates | 20.4486, 121.9702 (map) |