In the 2021 Census of Population conducted by Statistics Canada, King-Lebel had a population of 354 living in 146 of its 165 total private dwellings, a change of -6.6% from its 2016 population of 379. With a land area of 83.76 km2 (32.34 sq mi), it had a population density of 4.2/km2 (10.9/sq mi) in 2021.[1]