Ontario is a province located in east-central Canada, the largest by population and second largest, after Quebec, in total area.
Ontario is bordered by the provinces of Manitoba to the west and Quebec to the east, and five U.S. states (from west to east): Minnesota, Michigan, Ohio, Pennsylvania (the latter two across Lake Erie) and New York to the south and east. Most of Ontario's border with the United States runs along water. The capital of Ontario is Toronto, Canada's most populous city and metropolitan area. Ottawa, the capital of Canada, is also located in Ontario.