
Leechburg
- County:
- Armstrong County
- County Seat:
- No
- Area (mi²):
- 0.439
- State:
- Pennsylvania
Leechburg is a borough located in Armstrong County, Pennsylvania. Leechburg has a 2025 population of 2,054. Leechburg is currently declining at a rate of -0.87% annually and its population has decreased by -4.29% since the most recent census, which recorded a population of 2,146 in 2020.
The average household income in Leechburg is $62,809 with a poverty rate of 11.5%. The median age in Leechburg is 39.2 years: 37.3 years for males, and 39.3 years for females.