Philadelphia Philadelphia, often called Philly, is the largest city in the U.S. state and Commonwealth of Pennsylvania, and the sixth-most populous U.S. city, with a 2017 census-estimated population of 1,580,863. Since 1854, the city has been coterminous with Philadelphia County, the most populous county in Pennsylvania and the urban core of the eighth-largest U.S. metropolitan statistical area, with over 6 million residents . Philadelphia is also the economic and cultural anchor of the greater Delaware Valley, located along the lower Delaware and Schuylkill Rivers, within the Northeast megalopolis. The Delaware Valley's population of 7.2 million ranks it as the eighth-largest
for Peace" project with Mosul, Iraq, as well as accepting visiting delegations from dozens of other countries. See additional . Philadelphia Philadelphia, often called Philly, is the largest city in the U.S. state and Commonwealth of Pennsylvania, and the sixth-most populous U.S. city, with a 2017 census-estimated population of 1,580,863. Since 1854, the city has been coterminous with Philadelphia County, the most populous county in Pennsylvania and the urban core of the eighth-largest U.S. metropolitan statistical area, with over 6 million residents . Philadelphia is also the economic and cultural anchor of the greater Delaware Valley, located along the lower
by bicycle. 35.74% of households did not have an automobile. The proportion of Philadelphians who do not commute by auto is high compared to most other American cities, although lower than the proportions in New York City and Washington, D.C. From its founding through the early 19th century, the City of Philadelphia was considered the area between the Delaware and Schuylkill Rivers and between Vine and South Streets. Although the city proper was second to New York City in population at the time of the first U.S. Census in 1790, Philadelphia County was the most populous urban (or metropolitan) area
combined statistical area 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 place for the Founding Fathers of the United States, who signed the Declaration of Independence in 1776 at the Second Continental Congress, and the Constitution at the Philadelphia Convention of 1787. Several other key events occurred in Philadelphia during the Revolutionary War including the First Continental Congress, the preservation of the Liberty Bell, the Battle of Germantown, and the Siege of Fort Mifflin.
Northeast Philadelphia Northeast Philadelphia, nicknamed Northeast Philly, the Northeast and the Great Northeast, is a section of the City of Philadelphia, Pennsylvania. According to the 2000 Census, the Northeast has a sizable percentage of the city's 1.547 million people—a population of between 300,000 and 450,000, depending on how the area is defined. Beginning in the 1980s, many of the Northeast's middle class children graduated from college and settled in suburbs, especially nearby Bucks County. The Northeast is home to a large working class Irish American population, but is also home to Polish, German, Jewish, Italian, and Russian neighborhoods. Due to
Philadelphia is known as the city of what?

Reference answer:
City of Brotherly Love
Brotherly Love