Area code 450 is a telephone area code in the province of Quebec, Canada. It was created on June 13, 1998, when it was split from area code 514. It covers the regions surrounding Montreal, including the suburbs and rural areas. Some of the major cities and towns in this area code include Longueuil, Laval, Terrebonne, Saint-Hyacinthe, Saint-Jean-sur-Richelieu, and Granby.