New Jersey County Map

All 21 counties with county seats and major cities

New Jersey has 21 counties, and Hudson County, with about 46 square miles of land, is among the ten smallest counties in the nation. This map shows all 21 counties and their county seats. Tap a county for details, or download the free printable map below.

New Jersey county map showing all 21 counties with county names and county seats
Map of New Jersey counties with county seats (dots) and the state capital, Trenton (star). Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

Updated October 4, 2026 · Boundaries: U.S. Census Bureau 2025 · Population: Census estimates for July 1, 2025

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New Jersey county facts

Number of counties
21
Largest by land area
Burlington County 799 sq mi
Smallest by land area
Hudson County 46.2 sq mi
Most people
Bergen County 977,026
Fewest people
Salem County 66,280
Fastest growing since 2020
Ocean County +5.7%
Highest median household income
Hunterdon County $141,715
Oldest county
Bergen County est. 1683
Newest county
Union County est. 1857
State capital
Trenton Mercer County

List of 21 New Jersey counties

Sorted A–Z. Click a column to sort, or a name to show it on the map. Download as CSV

CountyCounty seatPopulation 2025Change since 2020Land area (sq mi)Median incomeEstablishedFIPS
Atlantic CountyMays Landing278,657+1.5%556$78,050183734001
Bergen CountyHackensack977,026+2.2%233$124,884168334003
Burlington CountyMount Holly481,439+4.2%799$108,111169434005
Camden CountyCamden535,799+2.4%221$88,755184434007
Cape May CountyCape May Court House93,390−2%252$91,128168534009
Cumberland CountyBridgeton157,148+2%483$67,436174834011
Essex CountyNewark896,379+3.9%126$80,789168334013
Gloucester CountyWoodbury312,638+3.4%322$105,115168634015
Hudson CountyJersey City735,033+1.4%46$91,795184034017
Hunterdon CountyFlemington131,781+2.2%428$141,715171434019
Mercer CountyTrenton399,289+3.1%225$100,645183834021
Middlesex CountyNew Brunswick883,335+2.3%309$111,549168334023
Monmouth CountyFreehold651,035+1.2%468$124,845168334025
Morris CountyMorristown524,251+2.9%461$137,326173934027
Ocean CountyToms River673,746+5.7%628$89,863185034029
Passaic CountyPaterson531,624+1.3%186$87,522183734031
Salem CountySalem66,280+2.3%332$79,960169434033
Somerset CountySomerville356,486+3.2%302$140,374168834035
Sussex CountyNewton148,063+2.7%519$116,186175334037
Union CountyElizabeth601,863+4.6%103$103,202185734039
Warren CountyBelvidere112,953+3%357$100,869182434041

New Jersey county map with cities

The largest cities in New Jersey and the counties they are in. Cities that cross a county line list every county, the main one first. To find any smaller town, use the search box above.

New Jersey county map with cities and county seats
New Jersey counties with county seat towns. Download the full-size image
CityCountyPopulation 2025
NewarkEssex County323,808
Jersey CityHudson County302,013
PatersonPassaic County161,793
LakewoodOcean County143,765
ElizabethUnion County141,675
EdisonMiddlesex County109,077
WoodbridgeMiddlesex County104,802
Toms RiverOcean County100,899
HamiltonMercer County94,157
TrentonMercer County91,506
CliftonPassaic County91,127
Cherry HillCamden County79,965
BrickOcean County77,402
BayonneHudson County74,744
East OrangeEssex County72,159
CamdenCamden County71,430
PassaicPassaic County71,337
Old BridgeMiddlesex County70,228
FranklinSomerset County69,105
MiddletownMonmouth County67,135
GloucesterCamden County67,085
Union CityHudson County66,656
UnionUnion County63,675
VinelandCumberland County62,703
PiscatawayMiddlesex County62,253
IrvingtonEssex County62,233
North BergenHudson County61,483
JacksonOcean County61,281
HobokenHudson County59,027
PlainfieldUnion County57,141

Printable New Jersey county maps (free PDF, PNG, SVG)

Every map is free to print and share. The PDFs are vector files with real text, so they stay sharp at any size and you can search them for a county name. Use 11×17 (tabloid) for the most readable labels.

New Jersey county map with all 21 counties labeled

Color map with names

All 21 counties labeled, county seats marked. Letter and 11×17 PDF, high-resolution PNG, editable SVG.

New Jersey county map with cities

Map with cities

Counties with their county seat towns and major cities.

Blank outline map of New Jersey counties

Blank outline map

County lines only, no names. For quizzes, coloring and your own notes.

New Jersey county map with numbers

Numbered map with key

A number in every county with an alphabetical key.

Black and white New Jersey county map

Black and white

Labeled map that prints well on any printer.

Map of New Jersey counties shaded by population density

Population map

Counties shaded by population density (2025 estimates).

Data and GIS files

The county table as CSV, and the boundaries as GeoJSON and KML (Google Earth, Google My Maps).

From two colonies to 21 counties

New Jersey's counties grew out of two colonies. In March 1683 the General Assembly of East Jersey erected four counties: Bergen, Essex, Middlesex and Monmouth. West Jersey used courts instead. Burlington and Salem courts date from 1681, Cape May from 1685 and Gloucester from 1686, and in 1694 all four were given boundaries and formally made counties. After the proprietors gave up their right to govern in 1702, an act of 1710 set the boundaries of all nine counties. These were then subdivided until 1857, when the Legislature created Union County, the last of the 21. According to John P. Snyder's boundary history, almost every county formed from 1714 on came from the same pressure: more people and more court business, with jurors travelling from remote parts of the county. Economics and politics often mattered as much, and some counties were voted in along strictly party lines.

County maps of neighboring states

New Jersey counties: questions and answers

How many counties are in New Jersey?
New Jersey has 21 counties.
What is the largest county in New Jersey?
By land area, Burlington County is the largest (799 sq mi). By population, Bergen County is the largest, with 977,026 people (2025 estimate).
What is the smallest county in New Jersey?
Hudson County is the smallest by land area (46.2 sq mi). Salem County has the fewest people: 66,280 (2025 estimate).
What is the wealthiest county in New Jersey?
By median household income, Hunterdon County ranks first with $141,715 (American Community Survey 2020–2024). The lowest is Cumberland County at $67,436.
What county is Newark in?
Newark is in Essex County.
What county is Jersey City in?
Jersey City is in Hudson County.
What county is Paterson in?
Paterson is in Passaic County.
What county is Trenton in?
Trenton, the state capital, is in Mercer County.
How can I see county lines on Google Maps?
Google Maps does not draw county lines. Download the KML file from the printable maps section above and import it into Google My Maps (Create a new map › Import) or open it in Google Earth to see every New Jersey county boundary on top of Google's map.
Can I use this map for free?
Yes. The maps and files on this page are free to print, share and use in your own work, including commercial projects, under the CC BY 4.0 licence. Please credit “WhichCounty (whichcounty.com)”.

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Sources and methodology

Found an error? Tell us. Last data update: October 4, 2026.