Lake Benton is a city in Lincoln County, Minnesota, United States. The population was 687 at the 2020 census. Lake Benton is also the name of the approximately seven-mile-long lake adjacent to the city of Lake Benton. The town is on the Buffalo Ridge, and is the site for the radio tower of KARZ-FM in Marshall. The area is the site of Exelon Wind's Norgaard Wind Project.