Greater Toronto Area

The Greater Toronto Area, commonly referred to as the GTA, includes the City of Toronto and the regional municipalities of Durham, Halton, Peel, and York. In total, the region contains 25 urban, suburban, and rural municipalities.[1][2] The Greater Toronto Area begins in Burlington in Halton Region, and extends along Lake Ontario past downtown Toronto eastward to Clarington in Durham Region.

Greater Toronto Area
Metropolitan area
Satellite image of the Greater Toronto Area from 2018
Greater Toronto Area
Greater Toronto Area
Coordinates: 43°38′33″N 79°23′14″W
  Land7,123.64 km2 (2,750.45 sq mi)
  Density942.4/km2 (2,441/sq mi)
 Combined population of Halton, Peel, Toronto, York, Durham
Time zoneUTC−05:00 (EST)
  Summer (DST)UTC−04:00 (EDT)
Postal code
L, M
Area code(s)226, 249, 289, 416, 437, 519, 647, 705, 905, 365

According to the 2021 census, the Census Metropolitan Area (CMA) of Toronto has a total population of 6,202,225.[3] However, the Greater Toronto Area which is an economic area defined by the Government of Ontario includes communities which are not included in the CMA as defined by Statistics Canada. Extrapolating the data for all 25 communities in the Greater Toronto Area from the 2021 Census, the total population for the economic region included 6,712,341 people.

The Greater Toronto Area is a part of several larger areas in Southern Ontario. The area is also combined with the city of Hamilton to form a conurbation known as the Greater Toronto and Hamilton Area (GTHA).[4][5] The GTHA combined with Niagara Region form the core of the Golden Horseshoe.

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