It was incorporated on January 1, 2015, via the amalgamation of the RM of South Norfolk and the Town of Treherne.[1] 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.[2] 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.[3]
In the 2021 Census of Population conducted by Statistics Canada, Norfolk-Treherne had a population of 1,770 living in 645 of its 685 total private dwellings, a change of 1.1% from its 2016 population of 1,751. With a land area of 737.9 km2 (284.9 sq mi), it had a population density of 2.4/km2 (6.2/sq mi) in 2021.[4]