Greater Toronto Area

The Greater Toronto Area (GTA) is Canada's largest and most populous metropolitan area and conurbation, consisting of the ceremonial county and single-tier municipality of Toronto and the rest of its surrounding metropolitan area, which covers the majority of the upper-tier municipalities of Peel Region, York Region, Halton County and Durham County. Its population in 2020 is approximately 18.85 million, nearly half the total population of Ontario.