Carrières-sous-Poissy () is a commune in the Yvelines department in the Île-de-France region in north-central France. The town sits on the bank of the Seine River, directly opposite the commune of Poissy. Notable landmarks in Carrières-sous-Poissy include the Château Champfleury, the Château Vanderbilt and St. Joseph's Church. Demographics See also Communes of the Yvelines department References Communes of Yvelines