Dorval–L'Île-Dorval was a former borough in the West Island area of Montreal, Quebec. It was composed of the former municipalities of Dorval and L'Île-Dorval. The municipalities were merged into the city of Montreal by the provincial government on January 1, 2002. On June 20, 2004, both Dorval and L'Île-Dorval voted to return to being independent municipalities. This took effect January 1, 2006, dissolving the borough. See also List of former boroughs Montreal Merger Municipal reorganization in Quebec Former Montreal boroughs 2002 establishments in Quebec 2006 disestablishments in Quebec Dorval fr:Dorval–L'Île-Dorval