New Jersey is a state in the Northeastern and
Middle Atlantic regions of the United States. It is bordered on the north and east by the U.S. state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania, and on the southwest by Delaware.
New Jersey is bordered on the north and northeast by New York (parts of which are across the Hudson River, Upper New York Bay, the Kill Van Kull, Newark Bay, and the Arthur Kill); on the east by the Atlantic Ocean; on the southwest by Delaware across Delaware Bay; and on the west by Pennsylvania across the Delaware River.
New Jersey can be thought of as five regions, based on natural geography and population. Northeastern New Jersey, the Gateway Region, lies closest to Manhattan in New York City, and many residents commute into the city to work. Northwestern New Jersey, or the "Skylands", is, compared to the northeast, more wooded, rural, and mountainous. The "Shore", along the Atlantic Coast in the central-east and southeast, has its own natural, residential, and lifestyle characteristics owing to its location by the ocean. The Delaware Valley includes the southwestern counties of the state, which reside within the Philadelphia Metropolitan Area. The fifth region is the Pine Barrens in the interior of the southern part. Covered rather extensively by mixed pine and oak forest, it has a much lower population density than much of the rest of the state.
New Jersey also can be broadly divided into three geographic regions: North Jersey, Central Jersey, and South Jersey. Some New Jersey residents do not consider Central Jersey a region in its own right, but others believe it is a separate geographic and cultural area from the North and South.
The federal Office of Management and Budget divides New Jersey's counties into seven Metropolitan Statistical Areas, including sixteen counties in the New York City or Philadelphia metro areas. Four counties have independent metro areas, and Warren County is part of the Pennsylvania-based Lehigh Valley metro area. (See Metropolitan Statistical Areas of New Jersey for details.)