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NJ Map

County County Seat Created Formed from County Coordinator
Atlantic County Mays Landing 1837 Gloucester County  
Bergen County Hackensack 1683 One of four original counties created in East Jersey  
Burlington County Mount Holly 1694 One of two original counties created in West Jersey  
Camden County Camden 1844 Gloucester County  
Cape May County Cape May Court House 1692 Burlington County  
Cumberland County Bridgeton 1748 Salem County  
Essex County Newark 1683 One of four original counties created in East Jersey  
Gloucester County Woodbury 1686 Burlington County  
Hudson County Jersey City 1840 Bergen County  
Hunterdon County Flemington 1714 Burlington County  
Mercer County Trenton 1838 Burlington County, Hunterdon County, Middlesex County, and Somerset County  
Middlesex County New Brunswick 1683 One of four original counties created in East Jersey  
Monmouth County Freehold Borough 1683 One of four original counties created in East Jersey  
Morris County Morristown 1739 Hunterdon County  
Ocean County Toms River 1850 Monmouth County  
Passaic County Paterson 1837 Bergen County and Essex County  
Salem County Salem 1694 One of two original counties created in West Jersey  
Somerset County Somerville 1688 Middlesex County  
Sussex County Newton 1753 Morris County  
Union County Elizabeth 1857 Essex County  
Warren County Belvidere 1824 Sussex County