Washingtonville
- County:
- Montour County
- County Seat:
- No
- Area (mi²):
- 0.054
- State:
- Pennsylvania
Washingtonville is a borough located in Montour County, Pennsylvania. Washingtonville has a 2026 population of 208. Washingtonville is currently growing at a rate of 0.97% annually and its population has increased by 2.97% since the most recent census, which recorded a population of 202 in 2020.