Greater Toronto and Hamilton Area
Country Canada
Province Ontario
 • Total8,244.42 km2 (3,183.19 sq mi)
 • Total7,170,534
 • Density844/km2 (2,216/sq mi)
 Combined population of the cities of Toronto and Hamilton and the regional municipalities of Halton, Peel, York, and Durham
Time zoneUTC-5 (EST)
 • Summer (DST)UTC-4 (EDT)
Postal Code
L, M
Area code(s)226, 519, 416, 437, 647, 705, 905, 289, 365

The Greater Toronto and Hamilton Area (GTHA) is a contiguous urban region that is composed of some of the largest cities and metropolitan areas by population in the Canadian province of Ontario. The GTHA consists of the Greater Toronto Area (GTA) and the city of Hamilton. The GTA is Canada’s most populous metropolitan area that includes the city of Toronto and the regional municipalities of Halton, Peel, York, and Durham. The GTHA forms the core of a larger urban agglomeration known as the Golden Horseshoe.

Beginning in the late-2000s, the term "Greater Toronto and Hamilton Area" was introduced by a few public bodies[a] to refer to the GTA and the city of Hamilton as a single entity. The population of the combined area is 7,170,534 as of 2016,[4] and is projected to grow to 8.6 million by 2031.[5] The main series of roadways that connects all the areas together (going from Durham to Hamilton) includes highways 401, 427, 403, and the Queen Elizabeth Way. The GTHA region is served by regional transport agency, GO Transit as well as different municipal transit systems managed by Metrolinx, which all use PRESTO payment.

Municipalities and populations

Census division Population (2011)[4] Population (2016)[4] Population estimate (2020)[4]
Toronto 2,704,880 2,819,399 2,988,408
Hamilton 535,151 552,272 581,722
Halton 517,053 565,112 610,581
Peel 1,339,012 1,432,962 1,563,641
York 1,065,524 1,144,859 1,200,262
Durham 626,569 655,990 711,426
Greater Toronto and Hamilton Area 6,788,189 7,170,534 7,656,040

See also


  1. ^ Adopters include the regional transportation planning body Metrolinx,[1] the Ministry of Energy and Infrastructure[2] and the Regional Municipality of Halton.[3]


  1. ^ "About Us". Metrolinx Website. Metrolinx.
  2. ^ "Places to Grow: Growth Plan for the Greater Golden Horseshoe" (PDF). Ministry of Public Infrastructure Renewal. 2006. p. 9. Archived from the original (PDF) on 2011-07-06.
  3. ^ "Amendment No. 38 to the Regional Plan (2006)". Regional Municipality of Halton. 2009-12-16. Archived from the original on 2011-07-06. Retrieved 2011-02-10.
  4. ^ a b c d Government of Canada, Statistics Canada (2021-01-14). "Population estimates, July 1, by census division, 2016 boundaries". Retrieved 2021-11-17.
  5. ^ "The Big Move". Metrolinx. 2008. Retrieved 2014-03-12.

Coordinates: 43°40′N 79°25′W / 43.667°N 79.417°W / 43.667; -79.417