Description: Detailed large map of New Jersey State, USA showing cities, towns, county formations, roads highway, US highways and State routes.
Look at the map and New Jersey's shape makes sense almost instantly: New York and the Hudson River anchor the Northeast corner, Pennsylvania sits across the Delaware River for the entire western border, Delaware lies across Delaware Bay to the Southwest, and the Atlantic Ocean runs the full length of the eastern coastline. All 21 counties are laid out on the map, with the Delaware, Hudson, and Raritan rivers doing most of the orientation work and the Passaic, Hackensack, and Maurice rivers stepping in as secondary landmarks farther south. Thin corridor lines for the New Jersey Turnpike (I-95), the Garden State Parkway, I-78, I-80, and I-287 are there mainly to help you place the state's major anchors: Newark and Jersey City in the Northeast harbor, Trenton at the capital on the Delaware in Central Jersey, Camden across from Philadelphia in the Southwest, and the Jersey Shore resorts running the length of the Atlantic coast in the Southeast.
Borders and waters at a glance: New Jersey's edges are almost entirely water. New York sits across the Hudson River and Upper New York Bay to the Northeast, with a short land border in the Northwest highlands near Sussex and Passaic counties. Pennsylvania runs the entire western border across the Delaware River, from the Delaware Water Gap in the north down to Trenton and Camden in the south. Delaware lies across Delaware Bay to the Southwest, visible on the map near Salem, Cumberland, and Cape May counties. The Atlantic Ocean frames the whole Southeastern coastline, from Sandy Hook at the top of the Jersey Shore down to Cape May Point at the state's southern tip.
Road-light orientation: This map keeps interstates and state highways thin on purpose so that counties, seats, and shorelines stay easy to read. Follow this on the map and you'll notice the New Jersey Turnpike (I-95) and the Garden State Parkway acting as the state's main north-south spines, while I-78 and I-80 carry east-west traffic across the Northern part of the state. Use these lines only to confirm direction, not for turn-by-turn navigation - the county shapes, rivers, and bays do the real work of orientation here.
Start in North Jersey's busiest corner, the Northeast Gateway. Bergen County lists Hackensack as its seat, sitting along the Hackensack River and ringed by Teaneck, Paramus, Ridgewood, Englewood, Fort Lee, and Mahwah at the New York line. Hudson County is the narrow urban peninsula between the Hudson River and Newark Bay, with Jersey City as its seat facing lower Manhattan and Hoboken, Weehawken, Union City, West New York, Bayonne, Secaucus, Kearny, and Harrison filling out the harbor cluster. West of Hudson, Essex County centers on Newark, New Jersey's largest city, along the Passaic River, with East Orange, Orange, Irvington, Bloomfield, and Montclair surrounding it. South of Newark, Union County lists Elizabeth as its seat near Newark Liberty International Airport, with Linden, Rahway, Cranford, Plainfield, Summit, and Westfield spread across the interior toward the Somerset line.
Passaic County centers on Paterson, home to the Great Falls of the Passaic River, and shares the Northern metro zone with Clifton, the city of Passaic, Wayne, and West Milford up in the Highlands. Just west, Morris County lists Morristown as its seat, a large interior county of boroughs and townships that includes Parsippany-Troy Hills, Denville, Dover, Madison, Mendham, and Mount Olive, with the edge toward Sussex and Warren marking the shift from the urban core into the rugged Northwestern Highlands.
In the far Northwest corner of the state, Sussex County lists Newton as its seat, bordering Pennsylvania along the upper Delaware River and New York near the Wallkill and the Kittatinny Mountain ridge. Sparta, Vernon Township, Hamburg, and Hopatcong round out the county, with Lake Hopatcong straddling the Morris line as a handy landmark. Running south along Pennsylvania, Warren County lists Belvidere as its seat, with Phillipsburg as the key Delaware River city opposite Easton, plus Washington, Hackettstown, and Hope filling in the ridge and valley country.
Between Union, Middlesex, and Hunterdon, in the heart of Central Jersey, Somerset County clusters around Somerville, with Bridgewater, Hillsborough, Bernards Township, and Franklin Township along the Raritan River corridor. West of Somerset, Hunterdon County reaches the Delaware with Flemington as its seat, joined by Clinton, Lambertville, and Milford in a landscape of creeks and preserved ridges. South of both, Mercer County centers on Trenton, the state capital, sitting on the Delaware River with Princeton, Hamilton, Ewing, and Hopewell surrounding it.
Middlesex County, another Central Jersey anchor, centers on New Brunswick, home to Rutgers University's main campus, along the Raritan River, with Edison, Woodbridge, Piscataway, Perth Amboy, and Old Bridge forming a dense cluster that curves toward Raritan Bay and Sandy Hook.
Monmouth County stretches from Raritan Bay down the northern Jersey Shore, with Freehold Borough as the inland seat and Middletown, Atlantic Highlands, and Sandy Hook near the tip, plus resort towns like Long Branch, Asbury Park, and Manasquan running down the coast. South of Monmouth, Ocean County fills the long lagoon coastline along Barnegat Bay in the Southeastern part of the state, with Toms River as its seat and Brick, Lakewood, Point Pleasant, Seaside Heights, and Barnegat Township lining the barrier islands and inlets, plus Manchester Township reaching into the Pine Barrens interior.
Atlantic County wraps the Great Egg Harbor River and Absecon Island in the Southeast, with the seat at Mays Landing in Hamilton Township, while the coast carries Atlantic City, Ventnor, and Brigantine. At the Southern tip, Cape May County fans out between the ocean and Delaware Bay, with the seat Cape May Court House in Middle Township and shore towns from Ocean City and Avalon down to the historic city of Cape May itself. North along Delaware Bay, Cumberland County centers on Bridgeton, with Millville and Vineland as the larger interior cities. West of Cumberland, in the state's Southwest corner, Salem County hugs the Delaware estuary, with the seat Salem near Pennsville and Carneys Point. Northeast of Salem, Gloucester County forms the Delaware River bend across from Philadelphia, with Woodbury as the seat and Glassboro and Deptford nearby. Across the river from Philadelphia, Camden County places Camden at the waterfront, with Cherry Hill, Haddonfield, and Collingswood inland. Finally, Burlington County is the state's largest by area, stretching from the Delaware River to the Pine Barrens, with Mount Holly as its seat and Mount Laurel, Moorestown, Medford, and Bordentown among its many towns.
Three rivers do most of the orientation work on this page. The Delaware River traces the entire western border past Trenton, Camden, and Salem. The Hudson River and its harbor shape the northeast edge past Jersey City and Hoboken. The Raritan River cuts through the middle of the state past New Brunswick and Somerville. Secondary cues from the Passaic, Hackensack, and Maurice rivers, along with Raritan Bay, Barnegat Bay, and Delaware Bay, fill in the rest.
The road layer is intentionally minimal. The New Jersey Turnpike (I-95) and the Garden State Parkway run the state's main north-south spines. I-78 and I-80 carry east-west traffic across the north, while I-287 loops through the northern suburbs and I-195 connects the capital area to the Shore. None of these are meant for turn-by-turn navigation, only as county-placement cues.
Every one of New Jersey's 21 counties and its seat, in alphabetical order: Atlantic County (Mays Landing), Bergen County (Hackensack), Burlington County (Mount Holly), Camden County (Camden), Cape May County (Cape May Court House), Cumberland County (Bridgeton), Essex County (Newark), Gloucester County (Woodbury), Hudson County (Jersey City), Hunterdon County (Flemington), Mercer County (Trenton), Middlesex County (New Brunswick), Monmouth County (Freehold Borough), Morris County (Morristown), Ocean County (Toms River), Passaic County (Paterson), Salem County (Salem), Somerset County (Somerville), Sussex County (Newton), Union County (Elizabeth), and Warren County (Belvidere).
New Jersey packs a lot into a small footprint, and that is exactly why leading with counties works better than leading with roads. The state's 21 counties are the backbone of local government here: county seats house the courts, clerks, and administrative offices that residents actually need to find, and property records, voter registration, and most public services are organized by county rather than by ZIP code or highway exit. ZIP codes routinely cross county lines in New Jersey, so a road map alone can leave you guessing which county you're actually in. Look at the map and the county shading answers that question instantly, whether you're checking a Bergen County address in North Jersey or a Cumberland County farm town down near Delaware Bay. Rivers and bays also make more reliable landmarks than a dense highway grid in a state this compact, which is why the Delaware, Hudson, and Raritan carry so much of the orientation work here. A county-first, road-light layout keeps the map calm and readable while still giving you everything you need to place a city, a town, or a county seat at a glance.
New Jersey borders New York across the Hudson River and harbor to the northeast, plus a land border in the northwest highlands, Pennsylvania across the Delaware River along the entire western edge, and Delaware across Delaware Bay to the southwest, with the Atlantic Ocean framing the whole eastern coast. The state holds 21 counties. Burlington County is the largest by land area at about 805 square miles, while Hudson County is the smallest at about 47 square miles. Bergen County is the most populous with roughly 955,732 residents, while Salem County is the least populous with roughly 64,837 residents. Bergen, Essex, Middlesex, and Monmouth counties share the title of oldest, all four created in 1683 as East Jersey's original county divisions. New Jersey covers about 8,723 square miles in total, with about 7,354 square miles of land. The capital, Trenton, sits in Mercer County on the Delaware River, and the state's major metro areas run from the Newark-Jersey City harbor across from New York City down through the capital corridor to Camden across from Philadelphia, with Atlantic City anchoring the Shore. Landscape-wise, the state moves from the rolling Highlands and Kittatinny ridge in the northwest through the dense Piedmont urban core, out across the farmland of the Inner Coastal Plain, into the forested Pine Barrens, and down to the barrier islands of the Jersey Shore and the marshy Delaware Bay lowlands.
New Jersey's ten largest cities by current population are Newark (about 311,549, Essex County), Jersey City (about 292,449, Hudson County), Paterson (about 159,732, Passaic County), Elizabeth (about 137,298, Union County), Lakewood (about 135,158, Ocean County), Edison (about 107,588, Middlesex County), Woodbridge (about 103,639, Middlesex County), Toms River (about 95,438, Ocean County), Hamilton (about 92,297, Mercer County), and Trenton (about 90,871, Mercer County). Newark and Jersey City anchor the northeast as logistics and finance hubs. Port Newark-Elizabeth Marine Terminal, split across Essex and Union counties, ranks as the busiest container port on the East Coast, while Jersey City's waterfront has grown into a major back-office and tech corridor often nicknamed Wall Street West. Pharmaceutical heritage runs deep here too: Merck, Johnson & Johnson, and Bristol-Myers Squibb all trace major roots to New Jersey, with a research corridor stretching through Middlesex, Somerset, and Mercer counties along Route 1. Agriculture still earns the state its "Garden State" nickname, with Hammonton in Atlantic County calling itself the blueberry capital of the world and South Jersey farms supplying tomatoes and cranberries. Atlantic City, in Atlantic County, anchors the Shore's casino and tourism economy.
New Jersey's cultural identity leans hard on the Jersey Shore, from the Victorian gingerbread of Cape May to the boardwalks of Wildwood, Seaside Heights, and Atlantic City, where beach towns have drawn summer crowds for well over a century. The state carries deep Revolutionary War roots too: George Washington crossed the Delaware near Trenton in Mercer County, the Battle of Monmouth was fought in Monmouth County, and Morristown in Morris County served as Washington's winter headquarters more than once. Corporate and pharmaceutical heritage shows up across the map, from Merck's Rahway roots in Union County to Bell Labs' legacy in the Route 78 corridor. New Jersey also claims the title of diner capital of the world, with hundreds of classic stainless-steel diners scattered across nearly every county. Higher education is spread widely as well, anchored by Princeton University in Mercer County, Rutgers University's main campus in New Brunswick (Middlesex County), Stevens Institute of Technology in Hoboken (Hudson County), and Rowan University in Glassboro (Gloucester County).
On this map, the Kittatinny Mountain ridge (Highlands, Sussex County) and the Delaware, Hudson, and Raritan rivers double as landmarks for finding counties quickly. For elevation, terrain, watersheds, and land-cover detail, see our Physical Map of New Jersey.
New Jersey has a humid continental climate in the north and a milder, humid subtropical-leaning climate in the south, with the Atlantic moderating temperatures along the Shore. For a full seasonal and biome breakdown, see our Physical Map of New Jersey.
North-south travel runs mainly on the New Jersey Turnpike (I-95) through the eastern half of the state and the Garden State Parkway along the Shore side. East-west travel runs on I-78 (Newark to the Pennsylvania line at Phillipsburg) and I-80 (the George Washington Bridge approach to the Delaware Water Gap), with I-287 looping through the northern suburbs and I-195 linking Trenton to the central Shore. Keep in mind that ZIP codes do not follow county lines in New Jersey, so a single ZIP code can span two counties. Always confirm the county name directly from the map or index rather than assuming it from a ZIP prefix.
Use this as a quick index. Every line lists the county with its county seat (and a familiar city when the map labels one). Short cues mention river, border, or gentle corridor context only.
Bergen - Hackensack; Fort Lee, Teaneck, Paramus, Ridgewood, Englewood, Mahwah.
Hudson - Jersey City; Hoboken, Bayonne, Union City, West New York, Weehawken, Secaucus, Kearny, Harrison.
Essex - Newark; East Orange, Orange, Irvington, Montclair, Bloomfield, Belleville, Nutley, West Orange.
Union - Elizabeth; Linden, Rahway, Cranford, Roselle, Westfield, Summit, Plainfield, Scotch Plains.
Passaic - Paterson; Clifton, Passaic, Wayne, Totowa, West Milford.
Morris - Morristown; Parsippany, Denville, Dover, Madison, Boonton, Mount Olive.
Sussex - Newton; Sparta, Vernon, Hamburg, Hopatcong, Byram.
Warren - Belvidere; Phillipsburg, Washington, Hackettstown vicinity, Hope.
Somerset - Somerville; Bridgewater, Hillsborough, Franklin Township, Bernards Township, Bound Brook.
Hunterdon - Flemington; Clinton, Lambertville, High Bridge, Milford, Stockton.
Mercer - Trenton; Princeton, Lawrence, Hamilton, Ewing, Hightstown, Hopewell.
Middlesex - New Brunswick; Edison, Woodbridge, Piscataway, Perth Amboy, Sayreville, Old Bridge, Carteret.
Monmouth - Freehold Borough; Middletown, Red Bank, Asbury Park, Long Branch, Belmar, Howell, Marlboro.
Ocean - Toms River; Lakewood, Brick, Point Pleasant, Seaside Heights, Barnegat, Lacey, Beach Haven, Manchester.
Atlantic - Mays Landing (Hamilton Township); Atlantic City, Ventnor, Margate, Brigantine, Egg Harbor Township, Hammonton, Galloway.
Cape May - Cape May Court House (Middle Township); Cape May, Wildwood, Ocean City, Sea Isle City, Avalon, Stone Harbor.
Cumberland - Bridgeton; Vineland, Millville, Fortescue, Port Norris, Greenwich.
Salem - Salem; Pennsville, Carneys Point, Woodstown, Elsinboro, Mannington.
Gloucester - Woodbury; Deptford, Glassboro, Washington Township, West Deptford, Paulsboro, Swedesboro.
Camden - Camden; Pennsauken, Gloucester City, Cherry Hill, Haddonfield, Collingswood, Voorhees, Lindenwold.
Burlington - Mount Holly; Burlington City, Bordentown, Cinnaminson, Moorestown, Mount Laurel, Evesham, Medford.
This directory aligns with what you see on the page: every county, its seat, and a one-line locator that keeps the focus on counties rather than driving steps.
New Jersey has 21 counties and the map shows every one with a colored block and county seat.
County boundaries, county seats and neighboring states, with only light road references for orientation.
Trenton in Mercer County on the Delaware River.
Essex County.
Hudson County.
Passaic County.
Union County.
Middlesex County.
Bergen County; Hackensack is the county seat.
Morris County.
Ocean County.
Atlantic County.
Cape May County.
Cumberland County.
Camden County.
Burlington County.
Gloucester County.
Salem County.
Bergen and Hudson along the Hudson River and harbor, plus Sussex and Passaic along the land border in the northwest highlands.
Sussex, Warren, Hunterdon, Mercer, Burlington, Camden, Gloucester and Salem.
Salem and Cumberland border the river and bay; Cape May fronts Delaware Bay across the water.
Thin lines for the New Jersey Turnpike (I-95), the Garden State Parkway, I-78, I-80 and I-287 place counties without cluttering the map.
At the tip of Monmouth County near Raritan Bay and the Atlantic Ocean.
Mercer County.
New Brunswick, Middlesex County.
On the Warren-Sussex county line along the Delaware River.
Hudson County, across the water from Lower Manhattan.
Jackson Township in Ocean County.
Sussex County, on the Kittatinny Mountain ridge near the New York border.
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Burlington County, at about 805 square miles.
Hudson County, at about 47 square miles.
Bergen County, with roughly 955,732 residents.
Salem County, with roughly 64,837 residents.
Newark, in Essex County, with about 311,549 residents.
Bergen, Essex, Middlesex and Monmouth counties, all formed in 1683 as East Jersey's original four counties.
No. ZIP codes cross county lines, so use the county boundaries and seats shown here instead.
Physical Map of New Jersey
Physical map and map image of New Jersey.
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