Its neighbours include Maurepas to the north, Mesnil-Saint-Denis and Lévis-Saint-Nom to the east, Essarts-le-Roi to the south and Saint-Rémy-l'Honoré to the west.

The village is roughly 170 m above sea level, fairly flat except to the west where there is a valley with the Mauldre river which runs from the area called la Maison Blanche to the north.

The commune is quite well developed with new housing and commercial zones near Maurepas and beyond the Saint-Quentin-en-Yvelines region.

There is also a large industrial zone (le Marais) between the RN10 and the railway line.

There are two preschools and elementary schools, École Gabriel Bouvet and École Marcel Pagnol, as well as one junior high school, Collège d'Enseignement Secondaire « La Mare aux Saules ».