Skyline of Niagara Falls, Canada, as seen from Niagara Falls State Park across the river in the United States Niagara Falls (/ n aɪ ˈ æ ɡ r ə / ny-AG-ra) is a city in Ontario, Canada. It is on the western bank of the Niagara River in the Golden Horseshoe region of Southern Ontario, with a population of 88,071 at the 2016 census. The municipality was incorporated on 12 June 1903. Across the Niagara River is Niagara Falls, New York.