Sewickley Heights
- County:
- Allegheny County
- County Seat:
- No
- Area (mi²):
- 7.324
- State:
- Pennsylvania
Sewickley Heights is a borough located in Allegheny County, Pennsylvania. Sewickley Heights has a 2026 population of 824. Sewickley Heights is currently declining at a rate of -0.36% annually and its population has decreased by -2.94% since the most recent census, which recorded a population of 849 in 2020.