Regional Municipality of York

York Region
Regional Municipality of York
Clockwise from top left: Historic Aurora Cultural Centre, Sibbald Point Provincial Park, Vaughan Metro Centre, rural Nobleton, Markham Civic Centre, Canada's Wonderland
Motto: 
"Deeds Speak"
Map showing York Region's location in Ontario
Coordinates: 44°00′N 79°26′W / 44.000°N 79.433°W / 44.000; -79.433
CountryCanada
ProvinceOntario
Established1792 (as York County)
Incorporated1971 (as a Regional municipality)
SeatNewmarket
Government
  TypeCouncil-CEO
  Chair & CEOEric Jolliffe
  Governing BodyYork Regional Council
Area
  Total
1,758.27 km2 (678.87 sq mi)
Population
 (2021)
  Total
1,173,334
  Density667.3/km2 (1,728/sq mi)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (Eastern (EDT))
Websitewww.york.ca

The Regional Municipality of York, also called York Region, is a regional municipality in Southern Ontario, Canada, between Lake Simcoe and Toronto. The region was established after the passing of then Bill 102, An Act to Establish The Regional Municipality of York, in 1970. It replaced the former York County in 1971, and is part of the Greater Toronto Area and the inner ring of the Golden Horseshoe. The regional government is headquartered in Newmarket.

As of the 2021 census, York Region's population was 1,173,334, with a growth rate of 5.7% from 2016. The Government of Ontario expects its population to surpass 1.5 million residents by 2031. The three largest cities in York Region are Markham, Vaughan and Richmond Hill.