In the 2021 Census of Population conducted by Statistics Canada, Rochester had a population of 72 living in 42 of its 59 total private dwellings, a change of -8.9% from its 2016 population of 79. With a land area of 3.17 km2 (1.22 sq mi), it had a population density of 22.7/km2 (58.8/sq mi) in 2021.[2]
As a designated place in the 2016 Census of Population conducted by Statistics Canada, Rochester had a population of 79 living in 38 of its 45 total private dwellings, a change of -21.8% from its 2011 population of 101. With a land area of 2.44 km2 (0.94 sq mi), it had a population density of 32.4/km2 (83.9/sq mi) in 2016.[17]
^"Geographical Identification and Population for Unincorporated Places of 25 persons and over, 1971 and 1976". 1976 Census of Canada(PDF). Supplementary Bulletins: Geographic and Demographic (Population of Unincorporated Places—Canada). Vol. Bulletin 8SG.1. Ottawa: Statistics Canada. 1978. Retrieved September 26, 2024.
^1981 Census of Canada(PDF). Place name reference list. Vol. Western provinces and the Territories. Ottawa: Statistics Canada. 1983. Retrieved September 26, 2024.