The RM was incorporated on February 9, 1906.[2] It amalgamated with the Village of St. Claude on January 1, 2015, as a requirement of The Municipal Amalgamations Act for municipalities with a population less than 1,000 residents.[1][3] The Government of Manitoba initiated these amalgamations in order for municipalities to meet the 1997 minimum population requirement of 1,000 to incorporate a municipality.[4]
In the 2021 Census of Population conducted by Statistics Canada, Grey had a population of 2,517 living in 959 of its 1,034 total private dwellings, a change of -4.9% from its 2016 population of 2,648. With a land area of 968.9 km2 (374.1 sq mi), it had a population density of 2.6/km2 (6.7/sq mi) in 2021.[5]