
Mount Lebanon township
- County:
- Allegheny County
- County Seat:
- No
- Area (mi²):
- 6.078
- State:
- Pennsylvania
Mount Lebanon township is located in Allegheny County, Pennsylvania. Mount Lebanon township has a 2025 population of 32,404. Mount Lebanon township is currently declining at a rate of -0.82% annually and its population has decreased by -4.75% since the most recent census, which recorded a population of 34,020 in 2020.
The average household income in Mount Lebanon township is $166,904 with a poverty rate of 3.5%. The median age in Mount Lebanon township is 43.6 years: 42 years for males, and 45.9 years for females.