Saint-Léon-de-Standon is a parish municipality of about 1,000 people in the Bellechasse Regional County Municipality in the Chaudière-Appalaches region of Quebec. The Etchemin River goes through the municipality.

Geography The Rivière des Fleurs, which flows south-west, forms the south-eastern boundary of the municipality and joins the Etchemin River in the south. From its source in the west of the municipality, the Rivière Viveine, a tributary of the Etchemin River, flows south-east.

Demographics In the 2021 Census of Population conducted by Statistics Canada, Saint-Léon-de-Standon 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 St. Leon (disambiguation)

References