St. Clairsville
- County:
- Bedford County
- County Seat:
- No
- Area (mi²):
- 0.03
- State:
- Pennsylvania
St. Clairsville is a borough located in Bedford County, Pennsylvania. St. Clairsville has a 2026 population of 75. St. Clairsville is currently declining at a rate of 0% annually and its population has decreased by -1.32% since the most recent census, which recorded a population of 76 in 2020.