Postal Code 3401
Diffun · Province of Quirino, Cagayan Valley
3401 is the postal code of Diffun in Province of Quirino, Cagayan Valley, Philippines.
- Postal Code
- 3401
- Province
- Province of Quirino
- Region
- Cagayan Valley
- Country
- Philippines
Place with postal code 3401
| Place | Province | Location |
|---|---|---|
| Diffun | Province of Quirino | 16.590, 121.506 |
Nearby postal codes
Frequently asked questions
Which places use postal code 3401?
Diffun.
Which province and region is 3401 in?
Province of Quirino, Cagayan Valley, Philippines.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.