Villepreux is a commune in the Yvelines department in the Île-de-France in north-central France located about 12 km west of Versailles, in the plaine de Versailles, almost in line with the perspective of the Grand Canal (an axis corresponding to the former Allée royale de Villepreux). The municipality, in low relief, is marked in the northern part of the depression of the valley ru Gally, and its tributaries, the rue de l'Oisemont and the rue de l'Arcy.