Tyndall is a city in and the county seat of Bon Homme County, South Dakota, United States. The population was 1,057 at the 2020 census.
Flagpole in front of Bon Homme County courthouse
Bon Homme County, South Dakota
Bon Homme County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 7,003. Its county seat is Tyndall.
Bon Homme County courthouse
Lewis and Clark Lake on the Missouri River in the southern part of the county