
Greenville township
- County:
- Mercer County
- County Seat:
- No
- Area (mi²):
- 25.062
- State:
- Pennsylvania
Greenville township is located in Mercer County, Pennsylvania. Greenville township has a 2025 population of 742. Greenville township is currently declining at a rate of -0.67% annually and its population has decreased by -1.59% since the most recent census, which recorded a population of 754 in 2020.
The average household income in Greenville township is $85,898 with a poverty rate of 15.91%. The median age in Greenville township is 35 years: 29.5 years for males, and 40.1 years for females.