In the 2021 Census of Population conducted by Statistics Canada, Burdett had a population of 331 living in 105 of its 119 total private dwellings, a change of  from its 2016 population of 401.
In the 2021 Census of Population conducted by Statistics Canada, Burdett's population was recorded at 331 residents in 105 out of its total 119 private residences, indicating a decline from 401 in the 2016 census.