Saint-Antoine-sur-Richelieu (, ) is a municipality in southwestern Quebec, Canada, on the Richelieu River in the Regional County Municipality of La Vallée-du-Richelieu. The population as of the Canada 2021 Census was 1,738.
Saint-Antoine-sur-Richelieu was the birthplace of one of the Fathers of Confederation, George-ÃÂtienne Cartier.
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Mother tongue language (2021)