New Jersey County Histories

 

County Established Year & Originating County County Seat
Atlantic formed in 1837 from Gloucester County Mays Landing
Bergen formed in 1683 from the Province of East Jersey Hackensack
Burlington formed in 1694 from the Province of West Jersey Mount Holly
Camden formed in 1844 from Gloucester County Camden
Cape May formed in 1692 from the Province of West Jersey Cape May Court
Cumberland formed in 1748 from Salem County  Bridgeton
Essex formed in 1683 from the Province of East Jersey Newark
Gloucester formed in 1686 from the Province of West Jersey Woodbury
Hudson formed in 1840 from Bergen County Jersey City
Hunterdon  formed in 1714 from Burlington County Flemington
Mercer  formed in 1838 from portions of Burlington, Hunterdon, Middlesex and Somerset Counties Trenton
Middlesex  formed in 1683 from the Province of East Jersey New Brunswick
Monmouth formed in 1683 from the Province of East Jersey Freehold
Morris formed in 1739 from Hunterdon County Morristown
Ocean formed in 1850 from Monmouth County Toms River
Passaic formed in 1837 from portions of Bergen and Essex Counties Paterson
Salem formed in 1694 from the Province of West Jersey Salem
Somerset formed in 1688 from Middlesex County Somerville
Sussex  formed in 1753 from Morris County Morris
Union formed in 1857 from Essex County Elizabeth
Warren formed in 1824 from Sussex County Belvidere