Blank map of New Jersey by county
All 21 counties of New Jersey, ready to print on Letter, Tabloid, A4 or A3, or to download as PNG and SVG. Free, no sign-up.
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Mapsfera · data US Census Bureau
New Jersey on the map
New Jersey has 21 counties; only 10 states have fewer. The largest is Burlington, with 799 sq mi of land, and the smallest is Hudson, with 46 sq mi: Burlington is about 17 times bigger.
The state capital, Trenton, is in Mercer County. The capital version marks it on the map.
Bergen County is the most populous, with 977,026 people in 2025, or 10% of the state. The least populous is Salem, with 66,280. Since 2020, Ocean has grown the fastest (+5.7%) and Cape May has lost the most (−2.0%).
What each county borders
Morris borders the most counties in the state: 7 (Essex, Hunterdon, Passaic, Somerset, Sussex, Union, and Warren).
11 counties touch another state. 7 border Pennsylvania: Burlington, Camden, Gloucester, Hunterdon, Mercer, Sussex, and Warren. 4 border New York: Bergen, Hudson, Passaic, and Sussex. Only Salem borders Delaware.
11 counties are on the coast: Atlantic, Cape May, Cumberland, Essex, Gloucester, Hudson, Middlesex, Monmouth, Ocean, Salem, and Union. 2 counties are fully inland, with no coast and no border with another state or country.
Number key
Numbers follow alphabetical order, from 1 (Atlantic) to 21 (Warren). Area is land area, without lakes or sea, and population is the Census estimate for July 1, 2025; “Borders” counts neighboring counties in the same state.
| No. | County | Land area | Population (2025) | Borders |
|---|---|---|---|---|
| 1 | Atlantic | 556 sq mi | 278,657 | 6 |
| 2 | Bergen | 233 sq mi | 977,026 | 3 |
| 3 | Burlington | 799 sq mi | 481,439 | 5 |
| 4 | Camden | 221 sq mi | 535,799 | 3 |
| 5 | Cape May | 252 sq mi | 93,390 | 2 |
| 6 | Cumberland | 483 sq mi | 157,148 | 4 |
| 7 | Essex | 126 sq mi | 896,379 | 5 |
| 8 | Gloucester | 322 sq mi | 312,638 | 4 |
| 9 | Hudson | 46 sq mi | 735,033 | 2 |
| 10 | Hunterdon | 428 sq mi | 131,781 | 4 |
| 11 | Mercer | 224 sq mi | 399,289 | 5 |
| 12 | Middlesex | 309 sq mi | 883,335 | 4 |
| 13 | Monmouth | 468 sq mi | 651,035 | 4 |
| 14 | Morris | 461 sq mi | 524,251 | 7 |
| 15 | Ocean | 628 sq mi | 673,746 | 3 |
| 16 | Passaic | 186 sq mi | 531,624 | 4 |
| 17 | Salem | 332 sq mi | 66,280 | 2 |
| 18 | Somerset | 302 sq mi | 356,486 | 5 |
| 19 | Sussex | 518 sq mi | 148,063 | 3 |
| 20 | Union | 103 sq mi | 601,863 | 4 |
| 21 | Warren | 357 sq mi | 112,953 | 3 |
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Frequently asked questions
How many counties does New Jersey have?
21 counties. Only 10 states have fewer.
What is the largest county in New Jersey?
Burlington, with 799 sq mi of land. The smallest is Hudson, with 46 sq mi.
What is the most populous county in New Jersey?
Bergen County, with an estimated 977,026 people in 2025, or 10% of the state.
What county is Trenton in?
The state capital, Trenton, is in Mercer County.
Can I use it in class?
Yes, it’s free. Print it, copy it and hand it out as many times as you like. If you post it on a blog or a class website, credit “Mapsfera · data US Census Bureau”.
How do I print it on US Letter paper?
Choose Letter in “Paper size” and click “Download PDF”. In the print window, pick Letter paper and 100% scale (“Actual size”). For a bigger map, choose Tabloid (11 × 17 in) or A3.
What order are the numbers in?
Alphabetical, from 1 to the last one. That makes the key easy to follow when you grade, and it’s the same key the worksheet’s answer page uses.
Sources
- Boundaries: U.S. Census Bureau, Cartographic Boundary Files 2025, counties at 1:500,000 (public domain)
- Land and water area: U.S. Census Bureau (TIGER/Line and 2025 Gazetteer); population: Vintage 2025 estimates (July 1, 2025)
- State capital: Natural Earth, Populated Places (public domain); which counties it spans, Census places
- Neighbors, coastline and borders: calculated from those boundaries (and checked against the Census county adjacency file)