Philadelphia is the sixth-most populous city in the United States, with an estimated population of 1,567,872 and more than 6 million in the seventh-largest metropolitan statistical area, as of 2016. Philadelphia is the economic and cultural anchor of the Delaware Valley, located along the lower Delaware and Schuylkill Rivers, within both the Mid-Atlantic region and 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.
The city is known for its arts, culture, and colonial history, which attracted 42 million domestic tourists in 2016.
The Philadelphia area's many universities and colleges make it a top study destination, as the city has evolved into an educational and economic hub.
Philadelphia's economic sectors include financial services, health care, biotechnology, information technology, manufacturing, oil refining, food processing, and tourism. Financial activities account for the largest economic sector of the metropolitan area, which is also one of the largest health education and research centers in the United States.
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