Philadelphia is the largest city in Pennsylvania and the sixth-most populous U.S. city. It’s located in the Northeastern United States along the Delaware and Schuylkill rivers. Philadelphia is among the oldest municipalities in the United States and one of the most culturally rich. It is the economic, transportation, and cultural centre of the Delaware Valley. Since its foundation, Philadelphia is renowned for its rich history that inspired many of the United States’ political principles. It is home to many national historical sites that relate to the founding of the United States. Some of the places that make it famous include the Liberty Bell, Independence Hall, where the Declaration of Independence and Constitution were signed, Philadelphia Museum of Art, and the Franklin Institute.

The United States conducts a census every 10 years, and 2020 was the latest census. According to the data from the 2010 census, Philadelphia had a population of 1,526,006. Compared to other cities in the United States, Philadelphia is considered to be diverse. According to the 2010 census, 44.2% of the population in Philadelphia identified as African American, 36.6% as White, 13.6% as Hispanic, 6.3% as Asian, and 2.5% identified as other races. When it comes to religious beliefs, Philadelphia is known to be diverse as well, with a significant number of people identifying as Christian, Jewish, Muslim, and Buddhist. Philadelphia is also known for its dialect, which is unique to the city and its metropolitan area.

Philadelphia is governed by a mayor and a city council. The mayor is elected every four years and is responsible for the administration of city government. The Philadelphia City Council consists of seventeen members, ten elected by district and seven at-large, serving four-year terms. Under the Home Rule Charter, the council has significant legislative and oversight responsibilities. The council is responsible for planning, enacting, and implementing the city’s policies, programs, and services.

Philadelphia has a diverse economy with manufacturing, oil refining, food processing, health care and biotechnology, tourism and financial services sectors. The city is home to the Philadelphia Stock Exchange and several Fortune 500 companies. The Philadelphia metropolitan area's gross domestic product was $490 billion in 2019, which makes it the eighth-largest metropolitan economy in the United States. The Port of Philadelphia handles about 4.2 million tons of cargo every year.

Philadelphia has a robust infrastructure which includes public transportation, highways, international airport, and port facilities. The Southeastern Pennsylvania Transportation Authority (SEPTA) is the sixth-largest transit agency in the United States and operates bus, subway, trolley, and commuter rail services in the city and region. Philadelphia International Airport is the largest airport in the region, serving over 31 million passengers annually. The city also has an extensive network of bike lanes and trails to encourage sustainable transportation.