Longueuil

Longueuil is a city in the province of Quebec, Canada, on the south shore of the Saint Lawrence River directly across from Montreal. It is the seat of the Montérégie administrative region and the central city of the urban agglomeration of Longueuil, and it is Montreal's second largest suburb. Charles Le Moyne founded it as a seigneurie in 1657; it became a parish in 1845, a village in 1848, a town in 1874 and a city in 1920. Between 1961 and 2002 its borders grew three times through amalgamation with surrounding municipalities, followed by a strong de-amalgamation in 2006. The 2021 census counted 254,483 residents, the fifth-largest total among Quebec cities.