Laval, city, seat of Laval region, southern Quebec province, Canada. It occupies the whole of Île Jésus (Jesus Island), just north of Île de Montréal from which it is separated to the south by the Rivière des Prairies and from the mainland to the north by the Rivière des Mille Îles; both rivers are extensions of the Ottawa, which flows into the St. Lawrence below Montreal city. Île Jésus, 20 miles (32 km) long by 8 miles (13 km) wide, with an area of 95 square miles (246 square km), was first settled in 1681. In 1699 it was granted to the Society of Jesus, and named for François de Montmorency Laval, the first Roman Catholic bishop of Canada. By 1702 a parish known as Saint-François de Sales was established.
Development of Montreal suburban communities on the island was relatively slow until the post-World War II years. In 1959, because of industrialization and urban growth, the Interurban Corporation of Île Jésus was formed. In 1965 the city of Laval was created by merging the island’s cities of Chomedey, Duvernay, Laval-des-Rapides, Laval Ouest, Pont-Viau, Sainte-Rose, and the towns of Auteuil, Fabreville, Îles-Laval, Laval-sur-le-Lac, Sainte-Dorothée, Saint-François, Saint-Vincent-de-Paul, and Vimont.
Since the opening of industrial parks in the 1960s, planned industrial development has been rapid. Manufactures include television and radio sets, lithographic printed materials, paper, aluminum, iron and steel products, pharmaceuticals, and dairy foods. Inc. city, 1965. Pop. (2006) 368,709; (2021) 438,366.