Saint-Athanase () is a municipality in Témiscouata Regional County Municipality in the Bas-Saint-Laurent region of Quebec, Canada, located on the Canada–United States border.
Demographics In the 2021 Census of Population conducted by Statistics Canada, Saint-Athanase 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.
See also West Branch Little Black River (Quebec–Maine), a stream Boucanée River, a stream List of municipalities in Quebec
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