In the 2021 Census of Population conducted by Statistics Canada, Missanabie had a population of 33 living in 15 of its 38 total private dwellings, a change of -17.5% from its 2016 population of 40. With a land area of 0.27 km2 (0.10 sq mi), it had a population density of 122.2/km2 (316.6/sq mi) in 2021.[3]