Beyond the birthplace of America lies a $557 billion economic powerhouse

Countries & Cities · Published 2 October 2026 Swipe more like this →

In short: While Philadelphia is famous for the Declaration of Independence, the broader Delaware Valley is much more than a historical monument. Spanning four states, this massive interconnected region has evolved into a global biotechnology hub and one of the nation's most significant economic engines.

The Philadelphia metropolitan area, also known as the Delaware Valley, is a sprawling economic and cultural landscape. As of 2023, its gross domestic product exceeded US$557 billion, ranking it as the 11th-largest metropolitan economy in the United States. This economic vitality is driven by its status as a premier biotechnology hub, earning the nickname 'Cellicon Valley' due to its leadership in developing cancer immunotherapies. The region is also a top five American venture capital hub, benefiting from its strategic position between the financial ecosystem of New York City and the regulatory environment of Washington, D.C.

The region's geography is complex, encompassing parts of Pennsylvania, New Jersey, Delaware, and Maryland. The core Metropolitan Statistical Area (MSA) holds approximately 6.245 million residents, while the larger Combined Statistical Area (CSA) reaches a population of about 7.379 million as of the 2020 census. This vast network includes major centers like Wilmington, Delaware, and Reading, Pennsylvania, and stretches from the South Jersey logistics hubs to the northern Eastern Shore of Maryland.

Historically, the area served as the nation's first capital from the late 18th century until 1800. Long before the American Revolution, the territory was inhabited by the Susquehannock and Lenape peoples. The region saw waves of European settlement, including Dutch explorers in 1609, Swedish and Finnish settlers in 1638, and Huguenot refugees from France in the early 1700s. Today, this diverse heritage persists in the local dialect, the unique Philadelphia cuisine, and a vibrant academic landscape featuring institutions like the University of Pennsylvania and Swarthmore College.

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