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Philadelphia County is the core county in the Philadelphia-Camden-Wilmington Combined Statistical Area (PA-NJ-DE-MD, located along the lower Delaware and Schuylkill Rivers, within the Northeast megalopolis.
The city is bordered by six adjacent counties: Montgomery to the northwest; Bucks to the north and northeast; Burlington County, New Jersey to the east; Camden County, New Jersey to the southeast; Gloucester County, New Jersey to the south; and Delaware County to the southwest.
Learn about the history and evolution of Philadelphia County, the original county of Pennsylvania founded by William Penn in 1682. Explore how the county shaped the city's development, local government, and political reform until its consolidation in 1854.
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. Its county seat is Philadelphia, the nation's sixth-largest city.
1 day ago · Philadelphia, city and port, coextensive with Philadelphia county, southeastern Pennsylvania, and situated at the confluence of the Delaware and Schuylkill rivers. It is the largest city in the state. Learn more about Philadelphia, including its history, in this article.
The city of Philadelphia is coterminous with Philadelphia County, the municipalities having been consolidated in 1854, and all remaining county government functions having been merged into the city after a 1951 referendum.
Plan your trip to Philadelphia, the largest city and county in Pennsylvania, with this official website. Find hotels, restaurants, events, attractions, and more for your Philly travel and tourism needs.
