Franklin County, Pennsylvania

Franklin County
Location within the U.S. state of Pennsylvania
Pennsylvania's location within the U.S.
Coordinates: 39°56′N 77°43′W / 39.93°N 77.72°W / 39.93; -77.72
Country United States
State Pennsylvania
FoundedSeptember 9, 1784
Named afterBenjamin Franklin
SeatChambersburg
Largest boroughChambersburg
Area
  Total
773 sq mi (2,000 km2)
  Land772 sq mi (2,000 km2)
  Water0.6 sq mi (2 km2)  0.08%
Population
 (2020)
  Total
155,932
  Density200/sq mi (80/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district13th
Websitewww.franklincountypa.gov

Franklin County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 155,932. Its county seat is Chambersburg.

Franklin County comprises the Chambersburg–Waynesboro, PA metropolitan statistical area, which is also included in the Washington–Baltimore combined statistical area. The county is part of the South Central region of the commonwealth.