Lake Hill
- County:
- Pennington County
- County Seat:
- No
- Area (mi²):
- 35.109
- State:
- South Dakota
Lake Hill is located in Pennington County, South Dakota. Lake Hill has a 2025 population of 36. Lake Hill is currently declining at a rate of -2.7% annually and its population has decreased by -7.69% since the most recent census, which recorded a population of 39 in 2020.
The median age in Lake Hill is 5.3 years: 4.5 years for males, and 0 years for females.