Gettysburg is a city in Potter County, South Dakota, United States, along the 45th parallel. The population was 1,162 at the 2010 census. It is the county seat of Potter County. Gettysburg area historical tornado activity is 42 percent less than the overall U.S. average.
Steve Asmussen of Laredo, Texas, a successful American horse trainer, was born in Gettysburg in 1965.
Gettysburg is located at 45°00′43″N 99°57′19″W / 45.011819°N 99.955386°W / 45.011819; -99.955386.