Philadelphia was the most populous U.S. city in 1776, but New York took the lead by the 1790 census.
Philadelphia's identity is often shaped by a "chip on the shoulder" regarding its loss of national status (capital city and UN headquarters) to New York. HD New York - Philadelphia
Philadelphia is sometimes called New York's "sixth borough" due to its proximity (roughly 90 minutes away) and its appeal to commuters and remote workers. Historical Rivalry Philadelphia was the most populous U
Philadelphia recently surpassed Miami as the top out-of-state destination for New Yorkers looking to relocate. HD New York - Philadelphia