Philadelphia, acknowledged colloquially as Philly, is the biggest city in the U.S. state and Commonwealth of Pennsylvania, and the sixth-most populous U.S. city with a 2018 census-estimated population of one,584,138. Given that 1854, the city has had the identical geographic boundaries as Philadelphia County, the most populous county in Pennsylvania and the urban core of the eighth-biggest U.S. metropolitan statistical region, with above 6 million residents as of 2017. Philadelphia is also the economic and cultural anchor of the better Delaware Valley, positioned along the reduced Delaware and Schuylkill Rivers, inside of the Northeast megalopolis. The Delaware Valley’s population of seven.two million ranks it as the eighth-biggest combined statistical region in the United States.

Philadelphia is one of the oldest municipalities in the United States. William Penn, an English Quaker, founded the city in 1682 to serve as capital of the Pennsylvania Colony. Philadelphia played an instrumental role in the American Revolution as a meeting area for the Founding Fathers of the United States, who signed the Declaration of Independence in 1776 at the 2nd Continental Congress, and the Constitution at the Philadelphia Convention of 1787. Numerous other key occasions occurred in Philadelphia for the duration of the Revolutionary War which includes the 1st Continental Congress, the preservation of the Liberty Bell, the Battle of Germantown, and the Siege of Fort Mifflin. Philadelphia remained the nation’s biggest city till becoming overtaken by New York City in 1790 the city was also one of the nation’s capitals for the duration of the revolution, serving as short-term U.S. capital whilst Washington, D.C. was under building. In the 19th century, Philadelphia grew to become a key industrial center and a railroad hub. The city grew from an influx of European immigrants, most of whom came from Ireland, Italy and Germany—the 3 biggest reported ancestry groups in the city as of 2015. In the early 20th century, Philadelphia grew to become a prime location for African Americans for the duration of the Fantastic Migration following the Civil War, as properly as Puerto Ricans. The city’s population doubled from one million to two million men and women among 1890 and 1950.

The Philadelphia area’s several universities and colleges make it a prime examine location, as the city has evolved into an educational and economic hub. As of 2019, the Philadelphia metropolitan region is estimated to generate a gross metropolitan item (GMP) of $490 billion. Philadelphia is the center of economic activity in Pennsylvania and is property to five Fortune one thousand organizations. The Philadelphia skyline is expanding, with a marketplace of almost 81,900 commercial properties in 2016, which includes a number of nationally prominent skyscrapers. Philadelphia has far more outdoor sculptures and murals than any other American city. Fairmount Park, when combined with the adjacent Wissahickon Valley Park in the identical watershed, is one of the biggest contiguous urban park places in the United States. The city is acknowledged for its arts, culture, cuisine, philadelphia escorts and colonial historical past, attracting 42 million domestic travelers in 2016 who spent $6.eight billion, generating an estimated $eleven billion in complete economic effect in the city and surrounding 4 counties of Pennsylvania. Philadelphia has also emerged as a biotechnology hub.