Jersey City is the seat of Hudson County, New Jersey, United States. As of the 2010 United States Census, the population of Jersey City was 247,597, making it the second-most populous city in New Jersey. Part of the New York City metropolitan area, Jersey City lies across from Lower Manhattan between the Hudson River and Upper New York Bay and the Hackensack River and Newark Bay. A port of entry, with 11 miles (18 km) of waterfront and significant rail connections, Jersey City is an important transportation terminus and distribution and manufacturing center for the Port of New York and New Jersey. Service industries have played a prominent role in the redevelopment of its waterfront and the creation of one of the nation's largest downtowns. Jersey City is the seat of Hudson County, New Jersey, and the second-largest city in New Jersey. According to the United States Census Bureau, the city had a total area of 21.080 square miles (54.596 km), of which, 14.
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