Map of Washington County, Pennsylvania

Washington County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 209,349. Its county seat is Washington.

Washington County is part of the Pittsburgh, PA Metropolitan Statistical Area.

The county is home to Washington County Airport, three miles (5 km) southwest of Washington.

Washington County overview:
Name:	Washington County
FIPS code:	42-125
State:	Pennsylvania
Founded:	March 28, 1781
Named for:	George Washington
Seat:	Washington
Largest city:	Peters Township, Washington County
Total Area:	861 sq mi (2,230 km²)
Land Area:	857 sq mi (2,220 km²)
Total Population:	209,349
Population Density:	244/sq mi (94/km²)
Time zone:	UTC−5 (Eastern)
Summer Time Zone (DST):	UTC−4 (EDT)
Website:	www.co.washington.pa.us

Washington County location map. Where is Washington County?

Washington County location on the U.S. Map. Where is Washington County. — Location of Washington County in the the United States.

Washington County location on the Pennsylvania map. Where is Washington County. — Location of Washington County in Pennsylvania.

History

The county was created on March 28, 1781, from part of Westmoreland County. The city and county were both named after American Revolutionary War leader George Washington, who eventually became the first President of the United States. The town of Charleroi got its name from the Belgian city of Charleroi. There lived many Belgian immigrants in the Monongahela area at the end of the 19th century, some of whom were glass makers.

Washington County Road Map

Washington CountyStreet Map. — Street map of Washington County, Pennsylvania. Source: OpenStreetMap (OSM)

Washington CountyMap — Washington Countypolitical map.

Geography

According to the U.S. Census Bureau, the county has a total area of 861 square miles (2,230 km), of which 857 square miles (2,220 km) is land and 3.9 square miles (10 km) (0.5%) is water.