Saint-Quentin-en-Yvelines is a city found in Ile-de-France, France. It is located 48.77 latitude and 2.02 longitude and it is situated at elevation 166 meters above sea level.

Saint-Quentin-en-Yvelines has a population of 146,598 making it the 3rd biggest city in Ile-de-France. It operates on the CEST time zone, which means that it follows the same time zone as Paris.