Gettysburg
- County:
- Potter County
- County Seat:
- No
- Area (mi²):
- 1.921
- State:
- South Dakota
Gettysburg is a city located in Potter County, South Dakota. Gettysburg has a 2026 population of 1,062. Gettysburg is currently declining at a rate of -1.12% annually and its population has decreased by -3.89% since the most recent census, which recorded a population of 1,105 in 2020.