The Constitution of the State of New Jersey is the basic governing document of the State of New Jersey. In addition to three British Royal Charters issued for East Jersey, West Jersey and united New Jersey while they were still colonies, the state has been governed by three constitutions. The first was adopted on July 2, 1776, shortly before New Jersey ratified the United States Declaration of Independence and the second came into effect in 1844. The current document was adopted in 1947 and has been amended several times.

New Jersey is a state situated within both the Mid-Atlantic and Northeastern regions of the United States. It is the most densely populated of all 50 U.S. states, and is situated at the center of the Northeast megalopolis. New Jersey is bordered on its north and east by New York state; on its east, southeast, and south by the Atlantic Ocean; on its west by the Delaware River and Pennsylvania; and on its southwest by Delaware Bay and Delaware. At 7,354 square miles (19,050 km2), New Jersey is the fifth-smallest state in land area, but with close to 9.3 million residents as of the 2020 United States census, its highest decennial count ever, it ranks 11th in population. The state capital is Trenton, and the state's most populous city is Newark. New Jersey is the only U.S. state in which every county is deemed urban by the U.S. Census Bureau with 13 counties included in the New York metropolitan area, seven counties in the Philadelphia metropolitan area, and Warren County part of the heavily industrialized Lehigh Valley metropolitan area.