Warroad is a city in Roseau County, Minnesota, United States, at the southwest corner of Lake of the Woods, 7.5 miles south of Canada. T…Warroad is a city in Roseau County, Minnesota, United States, at the southwest corner of Lake of the Woods, 7.5 miles south of Canada. The population was 1,781 at the 2010 census. Warroad had its own newspaper before it was incorporated in 1901.