New Jersey is a state within the United States of America that lies on the north eastern edge of the North American continent. It shares a land border with the state of New York along the north, ratified by both states after the

New York – New Jersey Line War The New York – New Jersey Line War (also known as the N.J. Line War) was a series of skirmishes and raids that took place for over half a century between 1701 and 1765 at the disputed border between two American colonies, the Province of New Yo ...

, which is its only straight line border. New Jersey is slightly larger than the country of

Kuwait Kuwait (; ar, الكويت ', or ), officially the State of Kuwait ( ar, دولة الكويت '), is a country in Western Asia. It is situated in the northern edge of Eastern Arabia at the tip of the Persian Gulf, bordering Iraq to the nort ...

. The

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

is east of the state. It is separated from New York, in particular the boroughs of the

Bronx The Bronx () is a borough of New York City, coextensive with Bronx County, in the state of New York. It is south of Westchester County; north and east of the New York City borough of Manhattan, across the Harlem River; and north of the New Y ...

and

Manhattan Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state ...

New York City New York, often called New York City or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the most densely populated major city in the Un ...

by the

Hudson River The Hudson River is a river that flows from north to south primarily through eastern New York. It originates in the Adirondack Mountains of Upstate New York and flows southward through the Hudson Valley to the New York Harbor between N ...

, and from Staten Island by the Kill van Kull and the Arthur Kill.

Liberty Island Liberty Island is a federally owned island in Upper New York Bay in the United States. Its most notable feature is the Statue of Liberty (''Liberty Enlightening the World''), a large statue by Frédéric Auguste Bartholdi that was dedicated i ...

is an exclave of

State of New York New York, officially the State of New York, is a state in the Northeastern United States. It is often called New York State to distinguish it from its largest city, New York City. With a total area of , New York is the 27th-largest U.S. state ...

New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...

waters in

Upper New York Bay New York Harbor is at the mouth of the Hudson River where it empties into New York Bay near the East River tidal estuary, and then into the Atlantic Ocean on the east coast of the United States. It is one of the largest natural harbors in t ...

Ellis Island Ellis Island is a federally owned island in New York Harbor, situated within the U.S. states of New York and New Jersey, that was the busiest immigrant inspection and processing station in the United States. From 1892 to 1954, nearly 12 mil ...

, also in the Upper Bay, and Shooter's Island, in Newark Bay, each have sections belonging to either of the two states. On its west, New Jersey is flanked by the Delaware River that forms its border with the

Commonwealth of Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, Ma ...

and

Delaware Bay Delaware Bay is the estuary outlet of the Delaware River on the northeast seaboard of the United States. It is approximately in area, the bay's freshwater mixes for many miles with the saltwater of the Atlantic Ocean. The bay is bordered inland ...

which separates New Jersey from the

State of Delaware Delaware ( ) is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. The state takes its name from the adjacent Del ...

. However, due to a fluke in a colonial land grant for the city of

New Castle, Delaware New Castle is a city in New Castle County, Delaware, United States. The city is located six miles (10 km) south of Wilmington and is situated on the Delaware River. As of the 2010 census, the city's population was 5,285. History New Castl ...

(called The Twelve-Mile Circle), there is a small amount of Delaware territory in contiguous New Jersey.

Finns Point Finns Point is a small strategic promontory in Pennsville Township, Salem County, New Jersey, and New Castle County, Delaware, located at the southwest corner of the cape of Penns Neck, on the east bank of the Delaware River near its mouth on De ...

, piers at Penns Grove, New Jersey and Pennsville, and Artificial Island, the tip of a small peninsula at Lower Alloways Creek are connected to

Salem County Salem County is the westernmost county in the U.S. state of New Jersey. Its western boundary is formed by the Delaware River and its eastern terminus is the Delaware Memorial Bridge, which connects the county with New Castle, Delaware. Its cou ...

. A coal pier in Logan Township also extends into the river. New Jersey's natural regions were formed by glaciers.

Area

New Jersey is ranked 47th of the fifty states that comprise the United States of America in terms of area. The total area of the state is , of which 14.9% or is water, and 85.1%, or , is land. New Jersey spans 70 miles (110 km) at its widest, and 166 miles (267 km) in length. Due to its small size, New Jersey, which ranks

eleventh In music or music theory, an eleventh is the note eleven scale degrees from the root of a chord and also the interval between the root and the eleventh. The interval can be also described as a compound fourth, spanning an octave plus a ...

in the nation in terms of population with 8,791,894 people, ranks

first First or 1st is the ordinal form of the number one (#1). First or 1st may also refer to: *World record, specifically the first instance of a particular achievement Arts and media Music * 1$T, American rapper, singer-songwriter, DJ, and rec ...

in population density, with . However, while this offers the impression that New Jersey is entirely urban or suburban, it is not. Large swaths of northwestern and southern New Jersey are extremely rural. For example, Walpack Township in Sussex County has a population of 39 and an area of .

Political and cultural geography

The State of New Jersey is divided into 21

counties A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

, which contain a total of 566

municipalities A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality'' may also mean the go ...

. As in most

New England New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York (state), New York to the west and by the Can ...

states, all land in New Jersey is incorporated. New Jersey municipalities have a strong tradition of independent

home rule Home rule is government of a colony, dependent country, or region by its own citizens. It is thus the power of a part (administrative division) of a state or an external dependent country to exercise such of the state's powers of governance wit ...

New Jersey is informally divided into the cultural regions of

North Jersey North Jersey comprises the northern portions of the U.S. state of New Jersey between the upper Delaware River and the Atlantic Ocean. The designation of northern New Jersey with a distinct toponym is a colloquial one rather than an administrati ...

, South Jersey, and sometimes

Central Jersey Central Jersey is the central region of the U.S. state of New Jersey. The designation of Central New Jersey is a distinct administrative toponym. Geographic area and descriptions While the State of New Jersey is often divided into North and ...

. New Jersey State Department of Tourism distinguishes six distinct tourist regions: the Gateway, Greater Atlantic City, the

Southern Shore Region The Southern Shore Region is located in the South Jersey region of New Jersey. It is one of six tourism regions established by the New Jersey State Department of Tourism, the others are the Gateway Region, Greater Atlantic City, the Delaware Riv ...

, the

Delaware River Region The Delaware River Region refers to an area in western New Jersey (USA) along the Delaware River border with Pennsylvania. It encompasses Burlington County, Camden County, Gloucester County, Mercer County, and Salem County. The area is primar ...

, the Shore Region and the Skylands Region.

Climate

Features

Rivers

New Jersey rivers includes streams formally designated as

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of w ...

s. There are also smaller streams (''i.e.,'' branches, creeks, drains, forks, licks, runs, etc.) in the state. Major rivers include the Manasquan,

Maurice Maurice may refer to: People * Saint Maurice (died 287), Roman legionary and Christian martyr * Maurice (emperor) or Flavius Mauricius Tiberius Augustus (539–602), Byzantine emperor *Maurice (bishop of London) (died 1107), Lord Chancellor and ...

, Mullica,

Passaic Passaic ( or ) is a city in Passaic County, in the U.S. state of New Jersey. As of the 2020 U.S. census, the city had a total population of 70,537, ranking as the 16th largest municipality in New Jersey and an increase of 656 from the 69,7 ...

Rahway Rahway () is a city in southern Union County, in the U.S. state of New Jersey. A bedroom community of New York City, it is centrally located in the Rahway Valley region, in the New York metropolitan area. The city is southwest of Manhattan ...

, Raritan, Musconetcong, and

Delaware Delaware ( ) is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. The state takes its name from the adjacent Del ...

rivers. Historically, the Delaware and Raritan rivers have provided transportation of goods and people inland from the

, and were once connected by the

Delaware and Raritan Canal The Delaware and Raritan Canal (D&R Canal) is a canal in central New Jersey, built in the 1830s, that served to connect the Delaware River to the Raritan River. It was an efficient and reliable means of transportation of freight between Philadelp ...

. Today, these rivers, and the streams that feed them, provide sport and recreation for many people.

Barrier islands

A series of

barrier island Barrier islands are coastal landforms and a type of dune system that are exceptionally flat or lumpy areas of sand that form by wave and tidal action parallel to the mainland coast. They usually occur in chains, consisting of anything from ...

s run the length of the Jersey Shore. They include Long Beach Island and

Absecon Island Absecon Island is a barrier island located on the Jersey Shore of the Atlantic Ocean in Atlantic County, New Jersey. On the island from north to south are the resort communities of Atlantic City, Ventnor, Margate, and Longport. The island ends a ...

. Many are popular tourist destinations.

Geology

Around 250 million years ago, during the

Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ' ...

and

Mesozoic The Mesozoic Era ( ), also called the Age of Reptiles, the Age of Conifers, and colloquially as the Age of the Dinosaurs is the second-to-last era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretace ...

eras, the area that is today New Jersey bordered northern Africa as part of the

supercontinent In geology, a supercontinent is the assembly of most or all of Earth's continental blocks or cratons to form a single large landmass. However, some geologists use a different definition, "a grouping of formerly dispersed continents", which leav ...

Pangea Pangaea or Pangea () was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Carboniferous approximately 335 million y ...

. The pressure of the collision between North America and Africa gave rise to the

Appalachian Mountains The Appalachian Mountains, often called the Appalachians, (french: Appalaches), are a system of mountains in eastern to northeastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. They ...

. Around 200 million years ago, Pangea began to break apart, separating the North American continent from the African continent. Around 18,000 years ago, the most recent ice age resulted in glaciers that reached New Jersey. As the glaciers retreated, they left behind

Lake Passaic Lake Passaic was a prehistoric proglacial lake that existed in northern New Jersey in the United States at the end of the last ice age approximately 19,000–14,000 years ago.Stanford, Scott D. “Glacial Lake Passaic.” ''Unearthing New Jerse ...

, as well as many rivers, swamps, and gorges.Geological History
by Great Swamp Watershed Association, retrieved December 22, 2006.

Physiographic Provinces

is a region with a high variety of geographical features in a small area. The area can be broken into five regions, corresponding roughly to geological zones. These regions from north to south are the Appalachian Valley and Ridge, Highlands, Newark Basin Piedmont, Inner Coastal Plain, and the Outer Coastal Plain.

Appalachian Valley and Ridge Physiographic Province

The Appalachian Valley and Ridge lies in the northwestern corner of the state and includes the

Kittatinny Mountains Kittatinny Mountain (Lenape: Kitahtëne) is a long ridge traversing primarily across Sussex County in northwestern New Jersey, running in a northeast-southwest axis, a continuation across the Delaware Water Gap of Pennsylvania's Blue Mountain ...

, several smaller valleys and the popular

Delaware Water Gap Delaware Water Gap is a water gap on the border of the U.S. states of New Jersey and Pennsylvania where the Delaware River cuts through a large ridge of the Appalachian Mountains. The gap makes up the southern portion of the Delaware Water Gap ...

. The state's highest point, the aptly named High Point is within this area, at . Most of the state's section of the

Appalachian Trail The Appalachian Trail (also called the A.T.), is a hiking trail in the Eastern United States, extending almost between Springer Mountain in Georgia and Mount Katahdin in Maine, and passing through 14 states.Gailey, Chris (2006)"Appalachian ...

runs through this area. The province is bounded on the southeast by an

unconformity An unconformity is a buried erosional or non-depositional surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous. In general, the older layer was exposed to erosion for an interval ...

between Cambrian and Precambrian formations.

Highlands Physiographic Province

The Highlands Physiographic Province is a

geological formation A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...

composed primarily of Precambrian

igneous Igneous rock (derived from the Latin word ''ignis'' meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or ...

and

metamorphic rock Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock ( protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, caus ...

running from the Delaware River near Musconetcong Mountain, northeast through the Skylands Region of

along the

Bearfort Ridge Bearfort Mountain, historically known as Bear Ford Mountain, is a mountain ridge located near Wawayanda State Park in West Milford, Passaic County, New Jersey. It is a continuation of Bellvale Mountain in New York. The Appalachian Trail crosses a ...

and the

Ramapo Mountains The Ramapo Mountains are a forested chain of the Appalachian Mountains in northeastern New Jersey and southeastern New York, in the United States. They range in height from in New Jersey, and in New York. Several parks and forest preserves en ...

. Numerous abandoned mines dot the region, dating from the 18th and 19th centuries when iron, copper, zinc and other minerals were extracted from the formations. The glaciated northern half of the province has an abundance of lakes and reservoirs which serve as water supplies for the urban areas to the east. The region's watershed is protected by the Highlands Water Protection and Planning Act.

Newark Basin Piedmont

The

Newark Basin The Newark Basin is a sediment-filled rift basin located mainly in northern New Jersey but also stretching into south-eastern Pennsylvania and southern New York. It is part of the system of Eastern North America Rift Basins. Geology Approximat ...

is a region in northern New Jersey defined by the boundaries of a

sediment Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sa ...

-filled

rift basin In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics. Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben wi ...

. This basin was formed when the

Pangaea Pangaea or Pangea () was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Carboniferous approximately 335 million y ...

began to split approximately 220 million years ago, causing several large depressions to form due to extension, which then filled with sediment. The basin itself extends from

Rockland County Rockland County is the southernmost county on the west side of the Hudson River in the U.S. state of New York. It is part of the New York metropolitan area. It is about from the Bronx at their closest points. The county's population, as of t ...

in the southern tip of New York to south-eastern

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

. It lies within the broader region known as the

Piedmont it, Piemontese , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = , demographics1_footnotes = , demographics1_title1 = , demographics1_info1 = , demographics1_title2 ...

, a crescent-shaped area characterized by smooth

topography Topography is the study of the forms and features of land surfaces. The topography of an area may refer to the land forms and features themselves, or a description or depiction in maps. Topography is a field of geoscience and planetary sc ...

and large volumes of sediments. Like the Piedmont, the Newark Basin has gentle topography consisting of red bed clastic sediments with occasional

igneous rock Igneous rock (derived from the Latin word ''ignis'' meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma o ...

formations, such as the

Palisades Sill The Palisades Sill is a Triassic, 200 Ma diabase intrusion. It extends through portions of New York and New Jersey. It is most noteworthy for The Palisades, the cliffs that rise steeply above the western bank of the Hudson River. The ideal loc ...

and the Watchung

basalt Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90 ...

flows; these igneous features are responsible for the dramatic elevation changes observed in the region, such as The Palisades and the

Watchung Mountains The Watchung Mountains (once called the Blue Hills) are a group of three long low ridges of volcanic origin, between high, lying parallel to each other in northern New Jersey in the United States. The name is derived from the American Native Lena ...

, respectively. The boundaries of the Newark Basin, as well as major highways, are shown on the map at left...... For the geological history of the region, see

Inner Coastal Plain

The Inner Coastal Plain province consists of lowlands and rolling hills underlain by

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...

deposits. Surficial geology in this region contains a number of fossils. The Monmouth County Park system, for example, includes a number of creeks where students and enthusiasts can gain real field exposure to cretaceous geology and paleontology. (Always check with the park service staff regarding permissibility before entering any field site.) The region's northwest border lies along the Piedmont

Fall Line A fall line (or fall zone) is the area where an upland region and a coastal plain meet and is typically prominent where rivers cross it, with resulting rapids or waterfalls. The uplands are relatively hard crystalline basement rock, and the coa ...

. Fertile, loamy soil makes the land ideal for agriculture and is responsible for New Jersey's nickname of the "Garden State". Its deposits of

Greensand Greensand or green sand is a sand or sandstone which has a greenish color. This term is specifically applied to shallow marine sediment that contains noticeable quantities of rounded greenish grains. These grains are called ''glauconies'' and co ...

marl containing potash were used since colonial days by farmers to fertilize their fields. AvalonBeach

Outer Coastal Plain

The outer coastal plain consists of unconsolidated Tertiary deposits of sands, silt, and gravels. The soils are sandy with less clay than the inner coastal plain, and are more acidic and dry. The lack of fertility makes much of the region unsuitable for agriculture and large areas remain undeveloped. The sandy

Pine Barrens Pine barrens, pine plains, sand plains, or pineland areas occur throughout the U.S. from Florida to Maine (see Atlantic coastal pine barrens) as well as the Midwest, West, and Canada and parts of Eurasia. Perhaps the most well known pine-barre ...

, an area that is agriculturally poor but species rich, occupy the center of the province. Blueberries and cranberries have been cultivated in lowland bogs that have accumulated depths of organic matter. Along the coast, sandy beaches attract a recreation industry, and the offshore

s are popular vacation destinations.

Natural environment

New Jersey's natural environment preserves a range of habitats ranging from the Atlantic shore to the Appalachian Mountains. The sandy uplands of South Jersey are home to the Atlantic coastal pine barrens. Surrounding the Pine Barrens, along the coast and covering the Inner Coastal Plain and Piedmont, are the

Northeastern coastal forests The Northeastern coastal forests are a temperate broadleaf and mixed forests ecoregion of the northeast and middle Atlantic region of the United States. The ecoregion covers an area of 34,630 sq miles (89,691 km2) encompassing the Piedmont a ...

. The Highlands consist of Appalachian-Blue Ridge forests which grade into Allegheny Highlands forests in the far northeast.