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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.
The following is a list of the 67 counties of the U.S. state of Pennsylvania. 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.
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.
Law and government. Media. Infrastructure. Notable people. Sister cities. See also. Notes. References. Further reading. External links. Philadelphia. Coordinates: 39°57′10″N 75°09′49″W. Philadelphia, commonly referred to as Philly, is the most populous city in the U.S. state of Pennsylvania. [11] .
Find information on municipal services, permits, licenses, and records for citizens and businesses in Philadelphia County, Pennsylvania. Learn about the latest news, events, and updates from the City government.
SHOW ALL QUESTIONS. 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. The county is part of the Southeast Pennsylvania region of the state.
Learn about the population, diversity, economy, education, and health of Philadelphia County, PA, the most populous county in Pennsylvania. See charts, maps, and photos of the county and its largest cities.
