Dunbar
- County:
- Fayette County
- County Seat:
- No
- Area (mi²):
- 0.578
- State:
- Pennsylvania
Dunbar is a borough located in Fayette County, Pennsylvania. Dunbar has a 2026 population of 977. Dunbar is currently declining at a rate of -0.81% annually and its population has decreased by -3.55% since the most recent census, which recorded a population of 1,013 in 2020.