Philadelphia

Before the arrival of Europeans in the early 17th century, the Lenape, an Indian tribe also known as the Delaware Indians, lived in the village of Shackamaxon in present-day Philadelphia and the surrounding area. The Lenape historically lived along the Delaware River watershed, western Long Island, and the Lower Hudson Valley. Most Lenape were pushed out of the region during the 18th century as the original Thirteen Colonies expanded, which was further exacerbated by losses from intertribal conflicts. Lenape communities were also weakened by newly introduced diseases, mainly smallpox, and conflicts with Europeans. The Iroquois occasionally fought the Lenape. Surviving Lenape moved west into the upper Ohio River basin. Following the American Revolutionary War and the subsequent establishment of the United States, the Lenape began moving further west. In the 1860s, the U.S. federal government sent most remaining Lenape in the eastern United States to the Indian Territory in present-day Oklahoma and surrounding territories as part of the Indian removal policy.

Europeans first entered Philadelphia and the surrounding Delaware Valley in the early 17th century. The first settlements were founded by Dutch colonists, who built Fort Nassau on the Delaware River in 1623 in what is now Brooklawn, New Jersey. The Dutch considered the entire Delaware River valley to be part of their New Netherland colony. In 1638, Swedish settlers led by renegade Dutch established the colony of New Sweden at Fort Christina, located in present-day Wilmington, Delaware, and quickly spread out in the valley. In 1644, New Sweden supported the Susquehannocks in their war against Maryland colonists. In 1648, the Dutch built Fort Beversreede on the west bank of the Delaware, south of the Schuylkill River near the present-day Eastwick section of Philadelphia, to reassert their dominion over the area. The Swedes responded by building Fort Nya Korsholm, or New Korsholm, named after a town in Finland with a Swedish majority.

In 1655, a Dutch military campaign led by New Netherland Director-General Peter Stuyvesant took control of the Swedish colony, ending its claim to independence. The Swedish and Finnish settlers continued to have their own militia, religion, and court, and to enjoy substantial autonomy under the Dutch. …

Philadelphia's geographic center is about 40° 0′ 34″ north latitude and 75° 8′ 0″ west longitude. The 40th parallel north passes through neighborhoods in Northeast Philadelphia, North Philadelphia, and West Philadelphia including Fairmount Park. The city encompasses 142.71 square miles (369.62 km), of which 134.18 square miles (347.52 km) is land and 8.53 square miles (22.09 km), or 6%, is water. Natural bodies of water include the Delaware and Schuylkill rivers, lakes in Franklin Delano Roosevelt Park, and Cobbs, Wissahickon, and Pennypack creeks. The largest artificial body of water is East Park Reservoir in Fairmount Park.

The lowest point is sea level and the highest point is in Chestnut Hill, about 446 feet (136 m) above sea level on Summit Street near the intersection of Germantown Avenue and Bethlehem Pike at: 40.07815 N, 75.20747 W. Philadelphia is located on the Atlantic Seaboard Fall Line that separates the Atlantic Plain from the Piedmont. The Schuylkill River's rapids at East Falls were inundated by completion of the dam at Fairmount Water Works.

The city is the seat of its own county. The city is bordered by six adjacent counties: Montgomery to the northwest; Bucks to the north and northeast; Burlington County, New Jersey to the east; Camden County, New Jersey to the southeast; Gloucester County, New Jersey to the south; and Delaware County to the southwest.

Philadelphia was created in the 17th century, following the plan by William Penn's surveyor Thomas Holme. Center City is structured with long, straight streets running nearly due east–west and north–south, forming a grid pattern between the Delaware and Schuylkill rivers that is aligned with their courses. The original city plan was designed to allow for easy travel and to keep residences separated by open space that would help prevent the spread of fire. In keeping with the idea of a "Greene Countrie Towne", and inspired by the many types of trees that grew in the region, Penn named many of the east–west streets for local trees. Penn planned the creation of five public parks in the city which were renamed in 1824. Centre Square was renamed Penn Square; Northeast Square was renamed Franklin Square; Southeast Square was renamed Washington Square; Southwest Square was renamed Rittenhouse Square; and Northwest Square was renamed Logan Circle/Square. …

As of the 2020 U.S. census, there were 1,603,797 people residing in Philadelphia, representing a 1.2% increase from the 2019 census estimate. The racial composition of the city was 39.3% Black alone (42.0% Black alone or in combination), 36.3% White alone (41.9% White alone or in combination), 8.7% Asian alone, 0.4% American Indian and Alaska Native alone, 8.7% some other race, and 6.9% multiracial. 14.9% of residents were Hispanic or Latino.

34.8% had a bachelor's degree or higher. 23.9% spoke a language other than English at home, the most common of which was Spanish (10.8%). 15.0% of the population is foreign born, roughly half of whom are naturalized U.S. citizens. 3.7% of the population are veterans. The median household income was $52,889 and 22.8% of the population lived in poverty. 49.5% of the population drove alone to work, while 23.2% used public transit, 8.2% carpooled, 7.9% walked, and 7.0% worked from home. The average commute is 31 minutes.

After the 1950 census, when a record high of 2,071,605 was recorded, the city's population began a long decline. The population dropped to a low of 1,488,710 residents in 2006 before beginning to rise again. Between 2006 and 2017, Philadelphia added 92,153 residents. In 2017, the U.S. Census Bureau estimated that the racial composition of the city was 41.3% Black (non-Hispanic), 34.9% White (non-Hispanic), 14.1% Hispanic or Latino, 7.1% Asian, 0.4% Native American, 0.05% Pacific Islander, and 2.8% multiracial.

In addition to the city's economic growth, the city's population has been fueled by foreign immigration. According to The Pew Charitable Trusts, the city's foreign-born population increased by 69% between 2000 and 2016 to constitute nearly 20% of Philadelphia's workforce, and it doubled between 1990 and 2017 to constitute 13.8% of the city's total population, with the top five countries of origin being China by a significant margin followed by the Dominican Republic, Jamaica, India, and Vietnam.

Irish, Italian, German, Polish, English, Russian, Ukrainian, and French ancestries constitute the largest European ethnic groups in the city. Philadelphia has the second-largest Irish and Italian populations in the United States after New York City. …

Philadelphia's close geographical and transportation connections to other large metropolitan economies along the Eastern Seaboard of the United States have been cited as offering a significant competitive advantage for business creation and entrepreneurship. The city is the center of economic activity in both Pennsylvania and the four-state Philadelphia metropolitan area. Five Fortune 500 companies are based in the city. As of 2021, the Philadelphia metropolitan area is estimated to produce a gross metropolitan product (GMP) of US$479 billion, an increase from the $445 billion calculated by the Bureau of Economic Analysis for 2017, representing the ninth-largest U.S. metropolitan economy.

Philadelphia's economic sectors include financial services, health care, biotechnology, information technology, trade and transportation, manufacturing, oil refining, food processing, and tourism. Metropolitan Philadelphia is one of the top five American venture capital hubs, credited to its proximity to New York City's financial and tech and biotechnology ecosystems. Financial activities account for the largest economic sector of the metropolitan area, which is one of the largest health education and research centers in the United States. The city's two largest employers are the federal and city governments. Philadelphia's largest private employer is the University of Pennsylvania followed by Children's Hospital of Philadelphia.

The Philadelphia Stock Exchange, acquired by Nasdaq in 2007, is a global leader in options trading. The city is home to the headquarters of Comcast, the nation's largest multinational telecommunications corporation; insurance conglomerates Cigna, Colonial Penn, and Independence Blue Cross; as well as food services company Aramark, chemical makers FMC Corporation and Rohm and Haas, pharmaceutical companies GlaxoSmithKline, Amicus Therapeutics, Spark Therapeutics, apparel retailers Five Below and Urban Outfitters and its subsidiary Anthropologie, automotive parts retailer Pep Boys, and stainless steel producer Carpenter Technology Corporation.

Other corporate headquarters in the city include Crown Holdings, and Brandywine Realty Trust. The headquarters of Boeing Rotorcraft Systems and its main rotorcraft factory are in the Philadelphia suburb of Ridley Park; The Vanguard Group and the U.S. …

Philadelphia County is a legal nullity. All county functions were assumed by the city in 1952. The city has been coterminous with the county since 1854.

Philadelphia's 1952 Home Rule Charter was written by the City Charter Commission, which was created by the Pennsylvania General Assembly in an act of April 1949, and a city ordinance of June 1949. The existing city council received a proposed draft in February 1951, and the electors approved it in an election held in April 1951. The first elections under the new Home Rule Charter were held in November 1951, and the newly elected officials took office in January 1952.

The city uses the strong-mayor version of the mayor–council form of government, which is led by one mayor in whom executive authority is vested. The mayor has the authority to appoint and dismiss members of all boards and commissions without the approval of the city council. Elected at-large, the mayor is limited to two consecutive four-year terms, but can run for the position again after an intervening term.

Philadelphia County is coterminous with the First Judicial District of Pennsylvania. The Philadelphia County Court of Common Pleas is the trial court of general jurisdiction for the city, hearing felony-level criminal cases and civil suits above the minimum jurisdictional limit of $10,000. The court has appellate jurisdiction over rulings from the Municipal and Traffic Courts, and some administrative agencies and boards. The trial division has 70 commissioned judges elected by the voters, along with about one thousand other employees. The court has a family division with 25 judges and an orphans' court with three judges.

As of 2018, the city's District Attorney is Larry Krasner, a Democrat. The last Republican to hold the office is Ronald D. Castille, who left in 1991 and later served as the Chief Justice of the Pennsylvania Supreme Court from 2008 to 2014.

The Philadelphia Municipal Court handles traffic cases, misdemeanor and felony criminal cases with maximum incarceration of five years, and civil cases involving $12,000 or less ($15,000 in real estate and school tax cases), and all landlord-tenant disputes. The municipal court has 27 judges elected by the voters.

Pennsylvania's three appellate courts also have sittings in Philadelphia. …