In the 2021 Census of Population conducted by Statistics Canada, Fleur de Lys had a population of 207 living in 116 of its 159 total private dwellings, a change of -15.2% from its 2016 population of 244. With a land area of 39.54 km2 (15.27 sq mi), it had a population density of 5.2/km2 (13.6/sq mi) in 2021.[2]