Blair Athol is an unincorporated place in New Brunswick, Canada.
It is recognized as a designated place by Statistics Canada.
In the 2021 Census of Population conducted by Statistics Canada, Blair Athol had a population of 52 living in 22 of its 22 total private dwellings, a change of -3.7% from its 2016 population of 54.
With a land area of 5.73 km2 (2.21 sq mi), it had a population density of 9.1/km2 (23.5/sq mi) in 2021.
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