Some of the largest cities in Ontario, Canada, include Toronto, Ottawa, Mississauga, Brampton and Hamilton. Other large cities in Ontario include London, Markham, Vaughan, Kitchener and Windsor.
Toronto is the capital city of Ontario and is the largest city in the entire country, with a population of 2.6 million, as of 2015. Ottawa is the capital city of Canada and the second largest city in Ontario. Markham is the newest city in the province, having turned from a town to a city in July 2012. The entire province of Ontario has 51 cities, with an overall population of about 9,293,031.