Liberty township
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 46.83
- State:
- South Dakota
Liberty township is located in Brown County, South Dakota. Liberty township has a 2025 population of 40. Liberty township is currently declining at a rate of -2.44% annually and its population has decreased by -9.09% since the most recent census, which recorded a population of 44 in 2020.
The median age in Liberty township is 12.6 years: 39.1 years for males, and 12.5 years for females.