Counties
| County |
FIPS Code | County Seat | Created | Formed from | Named for | Population | Area | Map |
|---|---|---|---|---|---|---|---|---|
| Atlantic County | 001 | Mays Landing | 1837 | Gloucester County | The Atlantic Ocean, which forms the county's eastern border | 7005274549000000000274,549 | 7002561000000000000561 sq mi (70031453000000000001,453 km2) |
|
| Bergen County | 003 | Hackensack | 1683 | One of four original counties created in East Jersey | Bergen, New Netherland settlement, itself named for Bergen, North Holland | 7005905116000000000905,116 | 7002234000000000000234 sq mi (7002606000000000000606 km2) |
|
| Burlington County | 005 | Mount Holly Township | 1694 | One of two original counties created in West Jersey | The old ancient name for an inland market near Bridlington, England | 7005448734000000000448,734 | 7002805000000000000805 sq mi (70032085000000000002,085 km2) |
|
| Camden County | 007 | Camden | 1844 | Gloucester County | Charles Pratt, 1st Earl Camden (1714–1794), an English supporter of the colonists during the American Revolution | 7005513657000000000513,657 | 7002222000000000000222 sq mi (7002575000000000000575 km2) |
|
| Cape May County | 009 | Cape May Court House | 1692 | Burlington County | The 17th-century Dutch explorer Cornelius Jacobsen Mey, who explored and surveyed the Delaware Bay to the south of the county | 700497265000000000097,265 | 7002255000000000000255 sq mi (7002660000000000000660 km2) |
|
| Cumberland County | 011 | Bridgeton | 1748 | Salem County | Prince William, Duke of Cumberland (1721–1765), second son of George II of England and military victor at the Battle of Culloden in 1746 | 7005156898000000000156,898 | 7002489000000000000489 sq mi (70031267000000000001,267 km2) |
|
| Essex County | 013 | Newark | 1683 | One of four original counties created in East Jersey | The county of Essex in England | 7005783969000000000783,969 | 7002126000000000000126 sq mi (7002326000000000000326 km2) |
|
| Gloucester County | 015 | Woodbury | 1686 | Burlington County | The city of Gloucester, England | 7005288288000000000288,288 | 7002325000000000000325 sq mi (7002842000000000000842 km2) |
|
| Hudson County | 017 | Jersey City | 1840 | Bergen County | The English explorer Henry Hudson (d. 1611), who explored portions of New Jersey's coastline | 7005634266000000000634,266 | 700147000000000000047 sq mi (7002122000000000000122 km2) |
|
| Hunterdon County | 019 | Flemington | 1714 | Burlington County | Robert Hunter (1664–1734), the Colonial Governor of New Jersey from 1710 to 1720 | 7005128349000000000128,349 | 7002430000000000000430 sq mi (70031114000000000001,114 km2) |
|
| Mercer County | 021 | Trenton | 1838 | Burlington County, Hunterdon County, Middlesex County, and Somerset County | The Continental Army General Hugh Mercer (1726–1777), who died at the Battle of Princeton | 7005366513000000000366,513 | 7002226000000000000226 sq mi (7002585000000000000585 km2) |
|
| Middlesex County | 023 | New Brunswick | 1683 | One of four original counties created in East Jersey | The former county of Middlesex in England | 7005809858000000000809,858 | 7002311000000000000311 sq mi (7002805000000000000805 km2) |
|
| Monmouth County | 025 | Freehold Borough | 1683 | One of four original counties created in East Jersey | The historic county of Monmouthshire in Wales | 7005630380000000000630,380 | 7002472000000000000472 sq mi (70031222000000000001,222 km2) |
|
| Morris County | 027 | Morristown | 1739 | Hunterdon County | Colonel Lewis Morris (1671–1746), colonial governor of New Jersey at the time of the county's formation | 7005492276000000000492,276 | 7002469000000000000469 sq mi (70031215000000000001,215 km2) |
|
| Ocean County | 029 | Toms River | 1850 | Monmouth County | The Atlantic Ocean, which forms the eastern border of New Jersey | 7005576567000000000576,567 | 7002916000000000000916 sq mi (70032372000000000002,372 km2) |
|
| Passaic County | 031 | Paterson | 1837 | Bergen County and Essex County | "Pasaeck", a Lenape word meaning "valley" | 7005501226000000000501,226 | 7002185000000000000185 sq mi (7002479000000000000479 km2) |
|
| Salem County | 033 | Salem | 1694 | One of two original counties created in West Jersey | A Hebrew word meaning "peace" | 700466083000000000066,083 | 7002338000000000000338 sq mi (7002875000000000000875 km2) |
|
| Somerset County | 035 | Somerville | 1688 | Middlesex County | The county of Somerset in England | 7005323444000000000323,444 | 7002305000000000000305 sq mi (7002790000000000000790 km2) |
|
| Sussex County | 037 | Newton | 1753 | Morris County | The county of Sussex in England | 7005149265000000000149,265 | 7002521000000000000521 sq mi (70031349000000000001,349 km2) |
|
| Union County | 039 | Elizabeth | 1857 | Essex County | The union of the United States, which was being threatened by the dispute over slavery | 7005536499000000000536,499 | 7002103000000000000103 sq mi (7002267000000000000267 km2) |
|
| Warren County | 041 | Belvidere | 1824 | Sussex County | The American Revolutionary War General Joseph Warren (1741–1775), killed at the Battle of Bunker Hill | 7005108692000000000108,692 | 7002358000000000000358 sq mi (7002927000000000000927 km2) |
Read more about this topic: List Of Counties In New Jersey