Lake Madison, SD

Lake Madison is an unincorporated community and census-designated place in Lake County, South Dakota, United States. Its population was 829 as of the 2020 census. The community is located on the shores of Lake Madison.
  • Elevation: 1,604 ft (489 m)
  • Country: United States
  • State: South Dakota
  • County: Lake
  • Area code: 605
  • GNIS feature ID: 2584557
  • FIPS code: 46-35430
Data from: en.wikipedia.org