Newark (/ˈnuː.ərk/ or also locally /nʊərk/) is the most populous city in the U.S. state of New Jersey and the seat of Essex County. As one of the nation's major air, shipping, and rail hubs, the city had a population of 277,140 in 2010, making it the nation's 67th most-populous municipality, after being ranked 63rd in the nation in 2000.