Delaware County, Pennsylvania
County in Pennsylvania, United States / From Wikipedia, the free encyclopedia
Not to be confused with Delaware Valley, which is the entire Philadelphia metropolitan area.
Delaware County, colloquially referred to as Delco,[2] is a county in the Commonwealth of Pennsylvania. With a population of 576,830 as of the 2020 census,[3] it is the fifth-most populous county in Pennsylvania and the third-smallest in area. The county was created on September 26, 1789, from part of Chester County and named for the Delaware River. The county is part of the Southeast Pennsylvania region of the state.[lower-alpha 1]
Quick Facts Country, State ...
Delaware County | |
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County | |
Coordinates: 39.92°N 75.40°W / 39.92; -75.40 | |
Country | United States |
State | Pennsylvania |
Founded | September 26, 1789 |
Named for | Delaware River |
Seat | Media |
Largest Township | Upper Darby |
Other cities | Chester |
Area | |
• Total | 191 sq mi (490 km2) |
• Land | 184 sq mi (480 km2) |
• Water | 6.8 sq mi (18 km2) 3.5% |
Population (2020) | |
• Total | 576,830 |
• Density | 3,000/sq mi (1,200/km2) |
Congressional district | 5th |
Website | delcopa |
Designated | October 3, 1982[1] |
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Delaware County borders Philadelphia, the nation's sixth-most populous city, to its northeast. It also is adjacent to the city-county of Philadelphia County and is included in the Philadelphia–Camden–Wilmington, PA–NJ–DE–MD metropolitan statistical area. Its county seat is Media.[4]