==History==On 31 May 1875, part of the territory of Chatou was detached and merged with a part of the territory of Le Pecq and a part of the territory of Croissy-sur-Seine to create the commune of Le Vésinet.
Chatou je zahodno predmestje Pariza in občina v osrednjem francoskem departmaju Yvelines regije Île-de-France.