In the 2021 Census of Population conducted by Statistics Canada, Blumenthal had a population of 123 living in 36 of its 37 total private dwellings, a change of 20.6% from its 2016 population of 102. With a land area of 0.71 km2 (0.27 sq mi), it had a population density of 173.2/km2 (448.7/sq mi) in 2021.[1]
