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Northeast county atlas

New Jersey county map

Explore all 21 counties. Select a county to see its map, or download a copy for your next project.

2025 Census boundaries21 mapped unitsCapital: Trenton
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Boundary map 100%
Labelled map of New Jersey counties Atlantic CountyBergen CountyBurlington CountyCamden CountyCape May CountyCumberland CountyEssex CountyGloucester CountyHudson CountyHunterdon CountyMercer CountyMiddlesex CountyMonmouth CountyMorris CountyOcean CountyPassaic CountySalem CountySomerset CountySussex CountyUnion CountyWarren County
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2025 U.S. Census boundaries. Zoom to reveal more names. Drag to pan when zoomed; use arrow keys, + and − with the map focused.

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Choose a format for printing, editing, or sharing. All downloads are free.

SVG

SVG is editable vector artwork. PNG is a high-resolution image. PDF uses landscape Letter pages, with a separate key when needed.

Downloads contain the complete boundary map, independent of zoom. Crowded names use a numbered key. Numbered quiz maps use the county list / answer key (CSV). Boundary data (GeoJSON) · Reuse with source credit.

Roads, terrain & aerial imagery

Explore New Jersey with a county boundary overlay. Choose a view to load the interactive map.

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Street names, terrain, or aerial photography with the county boundary in view.

Backgrounds load from OpenStreetMap or USGS only when selected. Imagery dates and detail vary by location.

Map scope: Use the boundary map for names and shapes, or the interactive background viewer for roads, terrain, and aerial imagery. County boundaries do not identify parcels or ZIP codes.

New Jersey county geography overview

New Jersey has 21 counties, which places it 40th among the 50 state and District of Columbia maps in this atlas when ordered by number of county-level units. Their combined 7,355.1 square miles of land place the state 46th by mapped land area.

The average county-level area is 350 square miles, while the median is 322 square miles. The median is often the better description of a typical unit because one or two very large areas can pull the average upward. The five largest units together account for about 41% of the state’s mapped land area.

21county-level units
322 sq mimedian land area
799.3 sq milargest unit
16%share of mapped area that is water

Largest and smallest New Jersey counties

Burlington County is the largest county-level unit by land area at 799.3 square miles. It represents about 11% of all mapped land in New Jersey. At the other end of the range, Hudson County has 46.2 square miles of land.

Largest by land area

  1. Burlington County799.3 sq mi
  2. Ocean County628.3 sq mi
  3. Atlantic County555.6 sq mi
  4. Sussex County518.5 sq mi
  5. Cumberland County483.4 sq mi

Smallest by land area

  1. Hudson County46.2 sq mi
  2. Union County102.8 sq mi
  3. Essex County126.1 sq mi
  4. Passaic County186.1 sq mi
  5. Camden County221.4 sq mi

Rankings use land area rather than total area. This avoids making coastal or lake counties appear larger solely because their boundaries include extensive water.

Alphabetical list of New Jersey counties

The table is alphabetical, so it works as a name and FIPS-code reference rather than an area ranking. Every identifier begins with the New Jersey state FIPS prefix 34. Land and water figures are rounded to one decimal place.

21 county-level areas

Download county data / numbered map key (CSV)
No.NameFIPS codeLand areaWater area
1Atlantic County34001555.6 sq mi116.3 sq mi
2Bergen County34003232.8 sq mi13.7 sq mi
3Burlington County34005799.3 sq mi21.1 sq mi
4Camden County34007221.4 sq mi6.1 sq mi
5Cape May County34009251.5 sq mi368.8 sq mi
6Cumberland County34011483.4 sq mi194.5 sq mi
7Essex County34013126.1 sq mi3.3 sq mi
8Gloucester County34015322 sq mi14.7 sq mi
9Hudson County3401746.2 sq mi16.2 sq mi
10Hunterdon County34019427.8 sq mi9.6 sq mi
11Mercer County34021224.5 sq mi4.4 sq mi
12Middlesex County34023309.3 sq mi13.6 sq mi
13Monmouth County34025468.2 sq mi193.2 sq mi
14Morris County34027461 sq mi20.5 sq mi
15Ocean County34029628.3 sq mi286.5 sq mi
16Passaic County34031186.1 sq mi12.4 sq mi
17Salem County34033331.9 sq mi40.7 sq mi
18Somerset County34035301.9 sq mi3.1 sq mi
19Sussex County34037518.5 sq mi16.9 sq mi
20Union County34039102.8 sq mi2.6 sq mi
21Warren County34041356.5 sq mi6.1 sq mi

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, download a PDF from the controls above. Labelled exports use numbered callouts for crowded areas; numbered quiz maps match the alphabetical county list. SVG files keep the boundary lines sharp at larger paper sizes.

Interpreting the water figure: About 16% of the summed mapped area in this state is water. County water area can include coastal waters, bays, lakes, or rivers assigned by the Census boundary file; it is shown separately from land and should not be used to estimate developable land.

Frequently asked questions

How many counties are in New Jersey?

New Jersey has 21 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this New Jersey county map?

Yes. Choose Download / print and select PDF for a landscape Letter page, PNG for an image, or SVG for editable vector artwork. Because the map is SVG, its boundary lines stay sharp when scaled.

What is the largest county in New Jersey?

Burlington County is the largest by land area in this dataset at 799.3 square miles. This is an area ranking, not a population ranking.

What is the smallest county in New Jersey?

Hudson County is the smallest by land area in this dataset at 46.2 square miles.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:5,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 27, 2026.