
Sewickley township
- County:
- Allegheny County
- County Seat:
- No
- Area (mi²):
- 26.759
- State:
- Pennsylvania
Sewickley township is located in Allegheny County, Pennsylvania. Sewickley township has a 2025 population of 5,545. Sewickley township is currently declining at a rate of -0.22% annually and its population has decreased by -1.82% since the most recent census, which recorded a population of 5,648 in 2020.
The average household income in Sewickley township is $80,338 with a poverty rate of 13.91%. The median age in Sewickley township is 49.1 years: 52.2 years for males, and 47.3 years for females.