
Summerville
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 0.595
- State:
- Pennsylvania
Summerville is a borough located in Jefferson County, Pennsylvania. Summerville has a 2025 population of 494. Summerville is currently declining at a rate of -0.6% annually and its population has decreased by -3.33% since the most recent census, which recorded a population of 511 in 2020.
The average household income in Summerville is $53,231 with a poverty rate of 18.18%. The median age in Summerville is 49.2 years: 44.2 years for males, and 61.8 years for females.