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 2026 population of 2,075. Leechburg is currently declining at a rate of -0.81% annually and its population has decreased by -3.26% since the most recent census, which recorded a population of 2,145 in 2020.
The median household income in Leechburg is $48,207 with a poverty rate of 19.65%. The median age in Leechburg is 42.2 years: 41.4 years for males, and 44.1 years for females. For every 100 females there are 101.1 males.