Postal Code 78300
Poissy · Yvelines, Île-de-France
78300 is the postal code of Poissy in Yvelines, Île-de-France, France.
- Postal Code
- 78300
- Department
- Yvelines
- Region
- Île-de-France
- Country
- France
Place with postal code 78300
| Place | Sub-district | Department | Location |
|---|---|---|---|
| Poissy | Saint-Germain-en-Laye | Yvelines | 48.929, 2.050 |
Near Paris
The nearest major city is Paris, about 23 km away.
Nearby postal codes
Frequently asked questions
Which places use postal code 78300?
Poissy.
Which department and region is 78300 in?
Yvelines, Île-de-France, France.
What is the nearest major city to 78300?
Paris, about 23 km away.
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.