Philadelphia, commonly referred to as Philly, is the most populous city in the U.S. state of Pennsylvania. Philadelphia is the nation's sixth-most populous city, with a population of 1,603,797 in the 2020 census and is the urban core of the larger Delaware Valley, the nation's seventh-largest and one of the world's largest metropolitan regions consisting of 6.245 million residents in the metropolitan statistical area and 7.366 million residents in its combined statistical area. Philadelphia is known for its extensive contributions to United States history, especially the American Revolution, and served as the nation's capital until 1800. It maintains contemporary influence in business and industry, culture, sports, and music. Philadelphia was founded in 1682 by William Penn, an English Quaker and advocate of religious freedom.

Country: United States
State: Pennsylvania
County: Philadelphia
Historic countries: Kingdom of England, Kingdom of Great Britain
Historic colony: Province of Pennsylvania
Founded: 1682
Incorporated: October 25, 1701
Founded by: William Penn
• Type: Mayor–council, consolidated city-county
• Body: Philadelphia City Council
• Mayor: Cherelle Parker (D)
Population (2020): 1,603,797
• Estimate (2022): 1,567,258
• Rank: 10th in North America, 6th in the United States, 1st in Pennsylvania
• Urban: 5,696,125 (US: 7th)
• Metro: 6,245,051 (US: 7th)
Demonym(s): Philadelphian
Time zone: EST (UTC−5)
• Summer (DST): EDT (UTC−4)
ZIP Codes: 19092–19093, 19099, 191xx
FIPS code: 42-60000
GNIS feature ID: 1215531
Website: www.phila.gov
GitHub profile: CityOfPhiladelphia
Wikidata description: largest city in Pennsylvania, United States
Wikidata id: Q1345
Wikidata label: Philadelphia
Wikidata aliases: Array
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