Postal Code 78124
Mareil-sur-Mauldre +1 · Yvelines, Île-de-France
78124 is the postal code of Mareil-sur-Mauldre, Montainville in Yvelines, Île-de-France, France.
- Postal Code
- 78124
- Department
- Yvelines
- Region
- Île-de-France
- Country
- France
2 places with postal code 78124
| Place | Sub-district | Department | Location |
|---|---|---|---|
| Mareil-sur-Mauldre | Saint-Germain-en-Laye | Yvelines | 48.895, 1.869 |
| Montainville | Saint-Germain-en-Laye | Yvelines | 48.883, 1.861 |
Near Paris
The nearest major city is Paris, about 36 km away.
Nearby postal codes
Frequently asked questions
Which places use postal code 78124?
Mareil-sur-Mauldre, Montainville.
Which department and region is 78124 in?
Yvelines, Île-de-France, France.
What is the nearest major city to 78124?
Paris, about 36 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.