The arrondissement of Rambouillet is an arrondissement of France in the Yvelines department in the Île-de-France region. Since the January 2017 reorganization of the arrondissements of Yvelines, it has 83 communes.
Wikipedia https://en.wikipedia.org/wiki/Arrondissement_of_Rambouillet
Coordinates 48°38'43.026" N 1°49'9.145" E