New Jersey County Maps: Interactive History & Complete List

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Map of New Jersey Counties
Map of New Jersey county boundaries and county seats

Maps of New Jersey are an invaluable part of genealogy and family history research, particularly in the event that you live far from where your ancestor was living.

Due to the fact that New Jersey’s political borders have often changed over the years, historic maps are an excellent way of helping you uncover the precise location of your ancestor’s home, exactly what land they owned, exactly who his or her neighbors were, and much more besides.

Maps of New Jersey are an exceptional resource for starting out with your own research because they provide useful information and facts in an immediate and clearly understandable manner.

States that border New Jersey are New York, Pennsylvania, and Delaware. The 10 largest cities in New Jersey are Newark, Jersey City, Paterson, Elizabeth, Edison, Woodbridge, Lakewood, Toms River, Hamilton, and Trenton.

Learn more historical facts about New Jersey counties here.

Interactive Map of New Jersey County Formation History

AniMap Plus 3.0, with the Permission of the Goldbug Company


List of Every New Jersey County

Atlantic County

Established in 1837, Atlantic County is located in the southeastern part of New Jersey and has a population of approximately 265,000.

Bergen County

Founded in 1683, Bergen County is located in northeastern New Jersey and is the most populous county in the state with over 950,000 residents.

Burlington County

Burlington County is located in the southwestern part of the state and was established in 1694. It has a population of around 450,000.

Camden County

Established in 1844, Camden County is situated in the southwestern part of New Jersey and is home to approximately 507,000 people.

Cape May County

Founded in 1692, Cape May County is located in the southernmost part of the state and has a population of around 95,000.

Cumberland County

Cumberland County was established in 1748 and is located in the southwestern part of the state. It has approximately 150,000 residents.

Essex County

Established in 1683, Essex County is located in northeastern New Jersey and has a population of around 800,000.

Gloucester County

Gloucester County is situated in the southwestern part of the state and was established in 1686. It has a population of around 291,000.

Hudson County

Founded in 1840, Hudson County is located in northeastern New Jersey and has approximately 676,000 residents.

Hunterdon County

Established in 1714, Hunterdon County is situated in the western part of the state and has a population of around 125,000.

Mercer County

Founded in 1838, Mercer County is located in central New Jersey and is home to around 370,000 people.

Middlesex County

Middlesex County is situated in central New Jersey and was established in 1683. It has a population of approximately 820,000.

Monmouth County

Established in 1683, Monmouth County is located in eastern New Jersey and has around 628,000 residents.

Morris County

Founded in 1739, Morris County is located in northeastern New Jersey and has a population of around 490,000.

Ocean County

Established in 1850, Ocean County is situated in eastern New Jersey and is home to around 611,000 people.

Passaic County

Established in 1837, Passaic County is located in northeastern New Jersey and has approximately 501,000 residents.

Salem County

Founded in 1694, Salem County is situated in the southwestern part of New Jersey and has a population of around 62,000.

Somerset County

Somerset County is located in central New Jersey and was established in 1688. It is home to around 335,000 people.

Sussex County

Established in 1753, Sussex County is situated in the northwestern part of the state and has a population of approximately 140,000.

Union County

Founded in 1857, Union County is located in northeastern New Jersey and has around 560,000 residents.

Warren County

Warren County is located in the northwestern part of the state and was established in 1824. It has a population of approximately 107,000.

Old Antique Atlases & Maps of New Jersey

David Rumsey Historical Map Collection

D.O.T. County Road and Highway Maps of New Jersey

To View the Map: Just click the image to view the map online. In order to make the image size as small as possible, they were saved on the lowest resolution.

New Jersey Map Links

Caleb Pike
About the author

Caleb Pike is an avid hiker and nature lover, with a passion for exploring the great outdoors. He's a writer, photographer, and adventurer, always seeking new trails to blaze and peaks to conquer.