The province of Toronto likely would take the boundaries of the former Metropolitan Toronto, an area of 630 square kilometres. The province would consist of the six municipalities that made up Metropolitan Toronto prior to amalgamation: the borough of East York and the cities of Etobicoke, North York, Scarborough, Toronto and York.

With 2.5 million people, it would be the fifth most populous of Canada’s 11 provinces. It would have about 150,000 people more than the total population of the four Atlantic provinces, and about 400,000 more people than Manitoba and Saskatchewan combined. Even without Toronto, Ontario would remain Canada’s most populous province. Boundaries of the province of Toronto could be adjusted if neighbouring municipalities voted to leave Ontario.

As an indication of how skewed Toronto’s place within Canada has become, if all Greater Toronto Area municipalities joined Toronto, and growth trends were to remain unchanged for the next 30 years, the province of Toronto would surpass Quebec as the country’s second most populous province. But without provincial status, Toronto will always have less standing constitutionally than Nunavut or P.E.I.