In the 2021 Census of Population conducted by Statistics Canada, Priestville had a population of 157 living in 73 of its 79 total private dwellings, a change of  from its 2016 population of 163.
In the 2021 Census of Population conducted by Statistics Canada, Priestville's population was 157 people living in 73 of its private residences, showing a decrease from its 2016 population of 163.