Kasson is a city in Dodge County, Minnesota, United States. The population was 6,851 at the 2020 census. Kasson is 13 miles (21 km) west of Rochester along U.S. Highway 14 and is one of the endpoints of Minnesota State Highway 57. The Dakota, Minnesota and Eastern Railroad's main freight rail line also runs through the city. Kasson shares a school system with nearby Mantorville. The K–M school system is a member of the Zumbro Education school district (ZED). Kasson is part of the Rochester, MN Metropolitan Statistical Area.