Philadelphia, often called Philly, is the largest city in the U.S. state 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 as of 2017. 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 combined statistical area in the United States.
Events of Interest
The introductory paragraph uses material from the Wikipedia article "Philadelphia" as of 07 Nov 2018, which is released under the Creative Commons Attribution-Share-Alike License 3.0.