About postal code 91790
The postal code 91790 routes mail to Boissy-sous-Saint-Yon in the Île-de-France region of France. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
France · Postal code
91790 - Boissy-sous-Saint-Yon
Postal code 91790 is Boissy-sous-Saint-Yon in Île-de-France, France.
| Postal code | 91790 |
| Place | Boissy-sous-Saint-Yon |
| Region | Île-de-France |
| District | Essonne |
| Country | France (FR) |
| Coordinates | 48.5538, 2.2121 (map) |