Grande-ÎleGrande-Île, Qué, Municipality, pop 4559 (2001c), 4468 (1996c), 4171 (1991c), area 9.82 km2, inc 1932, is located 43 km southwest of MONTRÉAL on Grande Île, an island in the ST LAWRENCE RIVER. The city of SALABERRY-DE-VALLEYFIELD lies across the river to the south of Grand-Île. The municipality is connected to the North Shore of the St Lawrence by the Monseigneur Langlois Bridge (1954).
This rural municipality has become a residential suburb of Valleyfield and of Greater Montréal. Its population nearly doubled from 1981 to 1996. Even though manufacturing and construction industries play a major role in the local economy, agriculture is still prominent. Almost 43% of the total area is used for agriculture.