Liberty
- County:
- Day County
- County Seat:
- No
- Area (mi²):
- 30.089
- State:
- South Dakota
Liberty is located in Day County, South Dakota. Liberty has a 2025 population of 70. Liberty is currently declining at a rate of -1.41% annually and its population has decreased by -1.41% since the most recent census, which recorded a population of 71 in 2020.
The median age in Liberty is 68.3 years: 0 years for males, and 0 years for females.