Toronto annexed and merged with surrounding municipalities in the 1800s.
The amalgamation of Toronto was the creation of the current political borders of Toronto , Ontario , Canada after amalgamating , annexing , and merging with surrounding municipalities since the 18th century . Toronto . York was renamed and incorporated as the city of Toronto in 1834 , and became the capital of the province of Ontario during Canadian Confederation in 1867 . The city proper has since expanded past its original borders through amalgamation with surrounding municipalities at various times in its history to its current area of 630.2 km2 .