
Sandy Lake
- County:
- Mercer County
- County Seat:
- No
- Area (mi²):
- 0.832
- State:
- Pennsylvania
Sandy Lake is a borough located in Mercer County, Pennsylvania. Sandy Lake has a 2025 population of 623. Sandy Lake is currently declining at a rate of -0.8% annually and its population has decreased by -3.86% since the most recent census, which recorded a population of 648 in 2020.
The average household income in Sandy Lake is $78,726 with a poverty rate of 14.49%. The median age in Sandy Lake is 31.9 years: 29 years for males, and 32.5 years for females.