thumb|New Jerseys countyn. Detta är en lista över de 21 countyn som finns i delstaten New Jersey i USA. National Association of Counties - Find a county
CountyHuvudort (county seat)GrundatAtlantic Mays Landing 1837Bergen Hackensack 1683Burlington Mount Holly 1694Camden Camden 1844Cape May Cape May Court House 1692Cumberland Bridgeton 1748Essex Newark 1683Gloucester Woodbury 1686Hudson Jersey City 1840Hunterdon Flemington 1714Mercer Trenton 1838Middlesex New Brunswick 1683Monmouth Freehold 1683Morris Morristown 1739Ocean Toms River 1850Passaic Paterson 1837Salem Salem 1694Somerset Somerville 1688Sussex Newton 1753Union Elizabeth 1857Warren Belvidere 1824
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