Ocean County NJ GenWeb

New Jersey County Map

Showing county seats, present boundaries and dates of formation

NJ County formation map

Formation of NJ Counties

Based on The Story of New Jersey's Civil Boundaries, 1606-1968 by John P. Snyder (Trenton, 1969).

COUNTY
DATE FORMED
COUNTY SEAT
HISTORICAL DATA
Atlantic 1837 Mays Landing Formed from Gloucester County.
Bergen 1683 Hackensack Original county in East Jersey; Passaic County set off, 1837; Hudson County set off, 1840.
Burlington 1681 Mount Holly Original county in West Jersey--court established 1681; boundary set with Gloucester County, 1692; Hunterdon County set off, 1714; part of Mercer County formed from Burlington, 1838.
Camden 1844 Camden Formed from Gloucester County.
Cape May 1685 Cape May Court House Original county in West Jersey--court established 1685; boundaries set 1692
Cumberland 1748 Bridgeton Formed from Salem County.
Essex 1683 Newark Original county in East Jersey; part of Passaic County formed from Essex, 1837; Union County set off, 1857.
Gloucester 1686 Woodbury Original county in West Jersey--court established 1686; boundary set with Burlington County, 1692; Atlantic County set off, 1837; Camden County set off, 1844.
Hudson 1840 Jersey City Formed from Bergen County.
Hunterdon 1714 Flemington Formed from Burlington County; Morris County set off, 1739; part of Mercer County formed from Hunterdon, 1838.
Mercer 1838 Trenton Formed from Burlington, Hunterdon, Middlesex and Somerset Counties.
Middlesex 1683 New Brunswick Original county in East Jersey; Somerset County set off, 1688; part of Mercer County formed from Middlesex, 1838.
Monmouth 1683 Freehold Original county in East Jersey; Ocean County set off, 1850.
Morris 1739 Morristown Formed from Hunterdon County; Sussex County set off, 1753.
Ocean 1850 Toms River Formed from Monmouth County.
Passaic 1837 Paterson Formed from Bergen and Essex Counties.
Salem 1681 Salem Original county in West Jersey--court established 1681; formed from Salem Tenth, 1694; Cumberland set off, 1748.
Somerset 1688 Somerville Formed from Middlesex County.
Sussex 1753 Newton Formed from Morris County; Warren County set off, 1824.
Union 1857 Elizabeth Formed from Essex County.
Warren 1824 Belvidere Formed from Sussex County.

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