Located on the southern slope of the Saint Ouen valley right on the edge of Normandy, the area of Saint Etienne-sous-Bailleul is on the borders of the Madrie plateau and the Seine valley.
The village stretches out over 3km at the side of the hill. With the hamlets of La Nieuray and de Brosville, the main settlement has a total population of 413 people. Saint-Etienne has kept its rural village feel despite the larger towns of Gaillonaise and Vernonaise nearby.
