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Washington County, Pennsylvania

Washington County
Washington County Courthouse
Flag of Washington County
Map of Pennsylvania highlighting Washington County
Location within the U.S. state of Pennsylvania
Map of the United States highlighting Pennsylvania
Pennsylvania's location within the U.S.
Coordinates: 40°11′N 80°15′W / 40.19°N 80.25°W / 40.19; -80.25
Country United States
State Pennsylvania
FoundedMarch 28, 1781
Named forGeorge Washington
SeatWashington
Largest cityPeters Township
Government
 • Chairman of the Board of CommissionersNick Sherman
Area
 • Total
861 sq mi (2,230 km2)
 • Land857 sq mi (2,220 km2)
 • Water3.9 sq mi (10 km2)  0.5%
Population
 (2020)
 • Total
209,349 Increase
 • Density240/sq mi (90/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district14th
Websitewashingtoncopa.gov

Washington County is a county in the Commonwealth of Pennsylvania, United States. As of the 2020 census, the population was 209,349.[1] Its county seat is Washington.[2] The county is part of the Greater Pittsburgh region of the state.[a] The county is home to Washington County Airport, three miles (4.8 km) southwest of Washington.

  1. ^ "Census - Geography Profile: Washington County, Pennsylvania". United States Census Bureau. Retrieved December 18, 2022.
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.


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