L'Islet-sur-Mer is an unincorporated community in L'Islet, Quebec, Canada.
It is recognized as a designated place by Statistics Canada.
In the 2021 Census of Population conducted by Statistics Canada, L'Islet-sur-Mer had a population of 652 living in 294 of its 315 total private dwellings, a change of 2% from its 2016 population of 639.
With a land area of 1.69 km2 (0.65 sq mi), it had a population density of 385.8/km2 (999.2/sq mi) in 2021.
This Quebec location article is a stub.