Saint-Simon is a municipality in southwestern Quebec, Canada on the Yamaska River in Les Maskoutains Regional County Municipality. The population as of the Canada 2016 Census was 1,413. Demographics Population Language Communities Clairveaux-de-Bagot Saint-Georges-de-Bagot Saint-Simon-de-Bagot See also List of municipalities in Quebec References Incorporated places in Les Maskoutains Regional County Municipality Municipalities in Quebec