Saint-Quentin-en-Yvelines is a new town in the French département of Yvelines. It is one of the original five villes nouvelles (new towns) of Paris and was named after the Saint Quentin Pond, which was chosen to become the town's centre. The town was built from a greenfield site starting in the 1960s. In 2007, Saint-Quentin-en-Yvelines had a population of 146,598. It is part of the much larger Paris metropolitan area, and is around 25 km west of the centre of Paris.

Saint-Quentin-en-Yvelines is a new town in the French département of Yvelines. It is one of the original five villes nouvelles (new towns) of Paris and was named after the Saint Quentin Pond, which was chosen to become the town's centre. The town was built from a greenfield site starting in the 1960s. In 2007, Saint-Quentin-en-Yvelines had a population of 146,598. It is part of the much larger Paris metropolitan area, and is around 25 km west of the centre of Paris.