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 2026 population of 500. Summerville is currently declining at a rate of -0.2% annually and its population has decreased by -2.15% since the most recent census, which recorded a population of 511 in 2020.
The median household income in Summerville is $61,875 with a poverty rate of 9.83%. The median age in Summerville is 53.8 years: 46 years for males, and 62.1 years for females. For every 100 females there are 84.0 males.