
Charleroi
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 0.762
- State:
- Pennsylvania
Charleroi is a borough located in Washington County, Pennsylvania. Charleroi has a 2025 population of 4,133. Charleroi is currently declining at a rate of -0.48% annually and its population has decreased by -2.41% since the most recent census, which recorded a population of 4,235 in 2020.
The average household income in Charleroi is $62,510 with a poverty rate of 29.37%. The median age in Charleroi is 36.5 years: 29.8 years for males, and 40.7 years for females.