Trenton, New Jersey Trenton, New Jersey Trenton is the capital city of the U.S. state of New Jersey and the county seat of Mercer County. It was briefly the capital of the United States. The city's metropolitan area is grouped with the New York metropolitan area by the United States Census Bureau, but directly borders the Philadelphia metropolitan area and is part of the Philadelphia Combined Statistical Area and the Federal Communications Commission's Philadelphia Designated Market Area. As of the 2010 United States Census, Trenton had a population of 84,913, making it the state's 10th-most-populous municipality. The Census Bureau estimated that the city's
New Jersey Chamber of Commerce in New Jersey. The guests board a chartered Amtrak train that leaves from Penn Station in Newark and then stops at various stations across New Jersey, as well as stops in Philadelphia and Wilmington. After the train arrives in the nation’s capital, guests have been joined by governors, state legislators, New Jersey’s Congressional delegation and other prominent business and political leaders from the Garden State for the annual Congressional Dinner. The Walk to Washington obtained its name when guests realized that few sit on the train; they literally walk up and down the train the whole trip to Washington. New