Philadelphia County, Pennsylvania
County in Pennsylvania, United States / From Wikipedia, the free encyclopedia
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Philadelphia County is the most populous county in Pennsylvania and the 24th-most populous county in the nation. As of the 2020 census, the county had a population of 1,603,797.[1] Its county seat is Philadelphia, the nation's sixth-largest city.
Philadelphia County | |
|---|---|
| City and County of Philadelphia | |
Old City Hall in Philadelphia in June 2011 | |
 Seal | |
 Location within the U.S. state of Pennsylvania | |
 Pennsylvania's location within the U.S. | |
| Coordinates: 40°01′N 75°08′W | |
| Country |  United States |
| State |  Pennsylvania |
| Founded | March 10, 1682 |
| Named for | City of Philadelphia |
| Seat | Philadelphia |
| Largest city | Philadelphia |
| Area | |
| • Total | 143 sq mi (370 km2) |
| • Land | 134 sq mi (350 km2) |
| • Water | 8.6 sq mi (22 km2) 6.0% |
| Population (2020) | |
| • Total | 1,603,797 |
| • Density | 11,969/sq mi (4,621/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional districts | 2nd, 3rd, 5th |
| Website | www |
Philadelphia County is one of the three original counties, along with Chester and Bucks counties, founded by William Penn in November 1682. Since 1854, the county has been coextensive with the City of Philadelphia which is also its county seat. Philadelphia County is the core county in the Philadelphia-Camden-Wilmington Combined Statistical Area (PA-NJ-DE-MD, also known as the Delaware Valley), located along the lower Delaware and Schuylkill Rivers, within the Northeast megalopolis.
Philadelphia County is the economic and cultural anchor of the Delaware Valley, the ninth-largest combined statistical area in the nation with an estimated population of 1,603,797 as of 2020.[2]