Nova Scotia is the seventh-most populous province in Canada with 923,598 residents as of the 2016 Census of Population, and the second-smallest province in land area at 52,495 km2 (20,268 sq mi). Nova Scotia's 50 municipalities cover 99.8% of the territory's land mass, and are home to 98.9% of its population.
Unlike the provinces of British Columbia, Ontario and Quebec, which have two-tiered municipality systems, Nova Scotia has a one-tier system of municipalities inclusive of four municipality types – regional municipalities, towns, county municipalities and district municipalities. Regional municipalities may incorporate under the Municipal Government Act (MGA) of 1998, which came into force on April 1, 1999, while towns, county municipalities and district municipalities are continued as municipalities under the MGA. The MGA gives municipal councils the power to make bylaws for "health, well being, safety and protection of persons" and "safety and protection of property" in addition to a few expressed powers.
Of its 50 municipalities, Nova Scotia has 3 regional municipalities, 26 towns, 9 county municipalities and 12 district municipalities.Halifax, the provincial capital, is incorporated as a regional municipality. It is Nova Scotia's largest municipality by population with 403,131 residents as of the 2016 census and largest municipality by land area at 5,490.35 km2 (2,119.84 sq mi).
Regional municipalities are incorporated under the authority of section 372 of Nova Scotia's Municipal Government Act. To consider the incorporation of a regional municipality, the Nova Scotia Utility and Review Board (NSUARB) must receive a request from all municipalities within a county. If the request is unanimous, the NSUARB commissions the preparation of a study to determine if the incorporation of "a regional municipality would be in the interests of the people of the county." Nova Scotia's Governor in Council can order the incorporation of a regional municipality if the results of the study are deemed to be in the best interests of the people, and if a plebiscite is undertaken that results in the majority of electors in the county voting in favour of incorporation of a regional municipality.