International Falls is a city in and the county seat of Koochiching County, Minnesota, United States. The population was 6,424 at the 2010 census. International Falls is located on the Rainy River directly across from Fort Frances, Ontario, Canada. The two cities are connected by the Fort Frances-International Falls International Bridge. Voyageurs National Park lies 11 miles east of International Falls. There is a major U.S. Customs Port of Entry on the International Falls side of the toll bridge, and a Canadian Customs entry point on the north side of the bridge.