Jersey City is the seat of Hudson County, New Jersey, United States.

Part of the New York metropolitan area, Jersey City lies between the Hudson River and Upper New York Bay across from Lower Manhattan 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. As of the 2010 United States Census, the population of Jersey City was 247,597, making it the second-largest city in New Jersey.[15]
Reference: http://en.wikipedia.org/wiki/Jersey_City%2C_New_Jersey