Beaconsfield–Baie-D'Urfé is a former borough in the West Island area of Montreal, Quebec. It was composed of the municipalities of Beaconsfield and Baie-D'Urfé through a forced merger on January 1, 2002. On June 20, 2004, both Beaconsfield and Baie-D'Urfé voted to return to being independent municipalities, effective January 1, 2006. See also List of former boroughs of Montreal Montreal Merger Municipal reorganization in Quebec Former Montreal boroughs Beaconsfield, Quebec fr:Beaconsfield–Baie-D'Urfé