SaintQuentinenYvelines

Saint-Quentin-en-Yvelines is a planned urban area and a “ville nouvelle” located in the Yvelines department of the Île-de-France region, France. Situated to the west of Paris, it was developed starting in the 1960s and 1970s as part of a national program to relieve housing pressure in the capital and to create balanced development with housing, employment, and services distributed across a satellite city.

The core of the area is the town of Saint-Quentin-en-Yvelines, but the district encompasses a number of neighboring municipalities. The urban community is organized as an intercommunal structure, bringing together several communes to coordinate planning, transport, economic development, and public services. Among the best known component towns are Montigny-le-Bretonneux, Guyancourt, Trappes, La Verrière, and Magny-les-Hameaux. The area functions as a major residential and employment center in western Île-de-France.

Education and research play important roles in Saint-Quentin-en-Yvelines. The University of Versailles Saint-Quentin-en-Yvelines (UVSQ) maintains campuses in the area, supporting a range of programs in sciences, humanities, and professional fields. The zone also hosts business parks and research facilities, contributing to the local economy alongside public services, retail, and cultural activities.

Transportation in the Saint-Quentin-en-Yvelines area is well integrated with the wider Île-de-France network. It is connected by road and regional rail networks, linking it to Paris and surrounding suburbs. The development emphasizes accessibility, education, and diversified employment opportunities, making the area a significant subregion within the western part of the greater Paris metropolitan area.