In the 2021 Census of Population conducted by Statistics Canada, Sainte-Sabine had a population of 343 living in 195 of its 237 total private dwellings, a change of -4.2% from its 2016 population of 358. With a land area of 66.89 km2 (25.83 sq mi), it had a population density of 5.1/km2 (13.3/sq mi) in 2021.[4]