In the 2021 Census of Population conducted by Statistics Canada, Rockhaven had a population of 15 living in 8 of its 11 total private dwellings, a change of 50% from its 2016 population of 10. With a land area of 1.52 km2 (0.59 sq mi), it had a population density of 9.9/km2 (25.6/sq mi) in 2021.[3]