Port Bolster is an unincorporated community in Ontario, Canada.
It is recognized as a designated place by Statistics Canada.
In the 2021 Census of Population conducted by Statistics Canada, Port Bolster had a population of 192 living in 72 of its 81 total private dwellings, a change of 42.2% from its 2016 population of 135.
With a land area of 0.46 km2 (0.18 sq mi), it had a population density of 417.4/km2 (1,081.0/sq mi) in 2021.
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