
Lake township
- County:
- Mercer County
- County Seat:
- No
- Area (mi²):
- 16.384
- State:
- Pennsylvania
Lake township is located in Mercer County, Pennsylvania. Lake township has a 2025 population of 682. Lake township is currently declining at a rate of -0.58% annually and its population has decreased by -2.71% since the most recent census, which recorded a population of 701 in 2020.
The average household income in Lake township is $74,804 with a poverty rate of 19.07%. The median age in Lake township is 30.5 years: 31.1 years for males, and 30.4 years for females.