In the 2021 Census of Population conducted by Statistics Canada, Saint-Fabien-de-Panet had a population of 945 living in 462 of its 611 total private dwellings, a change of -0.9% from its 2016 population of 954. With a land area of 187.01 km2 (72.20 sq mi), it had a population density of 5.1/km2 (13.1/sq mi) in 2021.[4]