Hermantown is a city in Saint Louis County, Minnesota, United States. The population was 10,221 at the 2020 census. A suburb of Duluth, it was at one point the county's only city to grow in population, as much of the area's residential and commercial expansion occurred there. Hermantown is near the tip of Lake Superior. The eastern part of Hermantown has an appearance typical of a lower-density bedroom community, with large, leafy lots and occasional subdivisions.