The RM was incorporated on January 1, 2015 via the amalgamation of the RM of McCreary and the Village of McCreary.[2] It was formed as a requirement of The Municipal Amalgamations Act, which required that municipalities with a population less than 1,000 amalgamate with one or more neighbouring municipalities by 2015.[5] 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.[6]
In the 2021 Census of Population conducted by Statistics Canada, McCreary had a population of 748 living in 345 of its 396 total private dwellings, a change of -16.1% from its 2016 population of 892. With a land area of 527.77 km2 (203.77 sq mi), it had a population density of 1.4/km2 (3.7/sq mi) in 2021.[3]