Montigny-le-Bretonneux is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located in the south-western suburbs of Paris, 24.5km from the centre of Paris, in the "new town" of Saint-Quentin-en-Yvelines, of which it is the central and most populated commune.HistoryMontigny le Bretonneux, the 6th town of the Yvelines department, has 36000 inhabitants and is the central and principal town of the district Saint-Quentin-en-Yvelines. It is ideally situated at the heart of Yvelines, formed in the shape of a triangle in the south by la Vallee de Chevreuse and the massif forestier de Rambouillet, and the towns of Versailles and Saint Germain en Laye in the north.The history of the town reflects that of a small traditional French village, naturally devoted to agriculture; "the best wheat lands of France". The growth of the new town in the 1970s actually initiates the change from the village of Montigny-le-Bretonneux (1292 inhabitants in 1970) to the town (10,063 in 1980).The town is found 25km south west of Paris, and 5km from Versailles, and at the heart of an agglomeration of 150,000 people, of which Montigny is the largest with 36000 inhabitants.After two decades of steady urbanization, Montigny-le-Bretonneux is now essentially completed, although the opportunity to create new housing is still there. In 2002, the State has decreed the end of the Operation of National Interest Statute establishing the new district of Saint-Quentin-en-Yvelines, whose seven member municipalities have opted for a new intercommunal principal, the “Community of Agglomeration”.