New Jersey is a U.S. state in the northeast United States. New Jersey borders New York to the northeast and Pennsylvania to the west. The capital of New Jersey is Trenton, and the largest city is Newark. Northern New Jersey is a part of the New York metropolitan area, while much of southern New Jersey is part of the Philadelphia metropolitan area. Consequently, New Jersey is one of the most urbanized states. New Jersey was one of the Thirteen Colonies, and the battles of Trenton and Princeton took place there.