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New Jersey

New Jersey Geography

Barrier Islands front most of the Coastal Plain, a broad area of lowlands, swamps, and miles of white-sand beaches running almost the complete length of the state. From there, the land rises into a few scattered rolling hills southwest and central.

The Pine Barrens, also known as the Pinelands, is a protected area of forests, swamps and marshes; it contains a huge reservoir (trillions of gallons) of some of the purest water on the planet.

In the far northwest corner, the forested Kittatinny Range - a part the Appalachian Mountains - stretch across the state. There stands the state's highest point, aptly named High Point, at 1,803 ft.

Over many centuries the Delaware River sliced through the Kittatinny Range, forming a wide, deep water gap, or break, named the Delaware Water Gap.

Those mountains then slope southeast into the rolling hills of the Piedmont Plateau, a broad area of small lakes, rivers, streams and narrow valleys.

The Highland's main feature is a series of flat-topped ridges of rock and slate that extend across the border into Pennsylvania and New York. It's also the site of numerous small lakes, rivers and streams.

The most significant rivers in New Jersey are the Delaware and Hudson. The Delaware forms the state's entire western border with Pennsylvania, and most of its border with Delaware. The Hudson is the natural border between northeastern New Jersey and New York.

Other important rivers include the Great Egg Harbor, Maurice, Mullica, Muscanetcong, Passaic and Toms. Lake Hopatcong is the largest freshwater lake in New Jersey.

Delaware Bay is a large estuary outlet of the Delaware River. It's an estimated 782 sq. miles in area, and its water mixes for many miles with the waters of the Atlantic Ocean.

For a closer look at the topography of New Jersey, view this topographic map.

New Jersey Photographs

New Jersey, Pine Barrens, the Sun Rises over Lake Atsion in the Pine Barrens

Pine Barrens...
by Dennis Mcdonald
Buy This at Allposters.com

New Jersey Cities, Counties & Area Codes

City County Area Code
Egg Harbor Township Atlantic 609
Hackensack Bergen 201
Marlton Burlington 856
Camden Camden 856
Cape May Cape May 609
Vineland Cumberland 856
Newark Essex 973
Williamstown Gloucester 856
Jersey City Hudson 201
Flemington Hunterdon 908
Trenton Mercer 609
Edison Middlesex 732
Freehold Monmouth 732
Morristown Morris 973
Toms River Ocean 732
Paterson Passaic 973
Penns Grove Salem 856
Somerset Somerset 732
Newton Sussex 973
Elizabeth Union 908
Hackettstown Warren 908

About the Author

John Moen is a cartographer who along with his wife are the orignal founders of worldatlas.com. He and his wife, Chris Woolwine-Moen, produced thousands of award-winning maps that are used all over the world and content that aids students, teachers, travelers and parents with their geography and map questions. Today, it's one of the most popular educational sites on the web.

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This page was last updated on April 7, 2017.