

York was amalgamated into the new City of Toronto on 1 January 1998. In 1967, it absorbed the town of Weston, and became the Borough of York, later known as the City of York. In 1954, York, along with other municipalities south of Steeles Avenue were severed from York County, forming the new upper-tier government of Metropolitan Toronto. During this time, American novelist and journalist Ernest Hemingway resided in the Humewood–Cedarvale community, writing for the Toronto Star. The Township of York contracted streetcar and bus services from the Toronto Transportation Commission (later became Toronto Transit Commission in 1954), but remained independent from Toronto. Within years, the Province of Ontario saw that this arrangement of having an exclave was impractical, and further subdivided York, creating the township of East York out of the eastern pocket. The remaining, two pockets of unincorporated urban development at the north end of the city, were split by the village of North Toronto, which was by then a part of the City of Toronto. The decision was made to split the township into two, with the northern, rural portion becoming North York in 1922. In the 1920s, the character of the township changed, with its southern reaches abutting the city of Toronto taking on a more urban character, compared with the very rural character of the north. Oakwood Village was also developed during this time. The Humewood–Cedarvale neighbourhood was developed in the 1910s to attract development in the growing township. The area was initially developed as a streetcar suburb.

Oakwood Village from Oakwood Avenue, north of St.

The legacy of York's original Black community continues today as of the 2016 Census, 17 percent of York's population is Black, the largest percentage of Toronto's six former municipalities. John's Ward, most of whom lived in York Township West (located west of Yonge Street and north of Bloor Street). By 1861, the township had the second-largest Black population in the Toronto area, after St. York Township was home to one of the original Black communities in the Toronto area, which was populated by many African American fugitive slaves. Etobicoke Township and Scarborough Township were located west and east, respectively, while the townships of Vaughan and Markham bordered on the north. York Township was incorporated by Canada West in 1850 (Canada West later became Ontario in 1867, due to Confederation), bounded in the west by the Humber River, in the east by what would become Victoria Park Avenue, and in the north by what would become Steeles Avenue. Teiaiagon, settled by the Iroquois on the eastern bank of the Humber River, where Baby Point is now, was the oldest known settlement on the land that would later become York Township.
