York Region in the context of "Newmarket, Ontario"

North York is a former township and city and is now one of the six administrative districts of Toronto, Ontario, Canada. It is located in the northern area of Toronto, centred around Yonge Street, north of Ontario Highway 401. It is bounded by York Region to the north at Steeles Avenue, (where it borders Vaughan) on the west by the Humber River, on the east by Victoria Park Avenue. Its southern boundary is erratic and corresponds to the northern boundaries of the former municipalities of Toronto: York, Old Toronto and East York. As of the 2016 Census, the district has a population of 644,685.

North York was created as a township in 1922 out of the northern part of the former township of York, a municipality that was located along the western border of the-then City of Toronto. Following its inclusion in Metropolitan Toronto in 1953, it was one of the fastest-growing parts of Greater Toronto due to its proximity to Toronto. It was declared a borough in 1967, and later became a city in 1979, attracting high-density residences, rapid transit, and a number of corporate headquarters in North York City Centre, its planned central business district. In 1998, North York was dissolved as part of the amalgamation which created the new City of Toronto. It has since become a secondary economic hub of the city outside Downtown Toronto.