Why you'd want to live in Philadelphia County

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.