
Chambersburg
- County:
- Franklin County
- County Seat:
- Yes
- Area (mi²):
- 6.925
- State:
- Pennsylvania
Chambersburg is a borough located in Franklin County, Pennsylvania. Chambersburg has a 2025 population of 22,484. It is also the county seat of .Chambersburg is currently growing at a rate of 0.54% annually and its population has increased by 2.73% since the most recent census, which recorded a population of 21,886 in 2020.
The average household income in Chambersburg is $74,311 with a poverty rate of 11.73%. The median age in Chambersburg is 41.2 years: 37.5 years for males, and 44.7 years for females.