 The commune is bounded with Montmorency, Saint-Brice-sous-Forêt, Sarcelles, Deuil-la-Barre and Montmagny.The name comes from "Graua", a Gaulish word, that means "terrain with pebbles".The nature of the soil was particularly favorable for wine growing, which was exploited here from antiquity until the late 19th century phylloxera epidemic.