Philadelphia County
County in Pennsylvania
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. Wikipedia
Population: 1.567 million (2022)
Area: 143 mi²
County seat: Philadelphia
Congressional districts: 2nd, 3rd, 5th
Founded: March 10, 1682