Lac-Saint-Joseph () is a town in Quebec, Canada, located on the namesake Saint-Joseph Lake.
Saint-Joseph Lake was already shown and named on Champlain's map of 1632 and Sanson's .
Initially a summer resort for residents from Quebec City, its post office opened in 1906 under the name Lake St. Joseph Hotel, renamed to Lac-Saint-Joseph in 1927. Real development of the town began when industrialist Thomas Maher obtained a land concession for logging and built a sawmill. Maher, one of the first residents, sold all the waterfront lots in the 1940s.
In 1936, the City of Lac-Saint-Joseph was created out of territory ceded by the Parish Municipality of Sainte-Catherine.
In the 2021 Census of Population conducted by Statistics Canada, Lac-Saint-Joseph had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021.
Mother tongue (2021):
Provincially it is part of the riding of La Peltrie. In the 2022 Quebec general election the incumbent MNA ÃÂric Caire, of the Coalition Avenir Québec, was re-elected to represent the population of Lac-Saint-Joseph in the National Assembly of Quebec.
Federally, Lac-Saint-Joseph is part of the federal riding of PortneufâÂÂJacques-Cartier. In the 2021 Canadian federal election, the incumbent Joël Godin of the Conservative Party was re-elected to represent the population Lac-Saint-Joseph in the House of Commons of Canada.