New Jersey

New Jersey has 21 Counties.

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  • New Jersey Association of Counties
    150 West State Street
    Trenton, NJ 08608-1105
    Phone: (609) 394-3467
    Fax: (609)989-8567
    http://www.njac.org

    County NACo
    Member
    2010
    Population
    Square
    Miles
    County Seat Board
    Size
    Founded
    Atlantic 274,549 556 Mays Landing   1837 
    Bergen   905,116 233 Hackensack   1683 
    Burlington 448,734 799 Mount Holly   1694 
    Camden 513,657 221 Camden   1844 
    Cape May 97,265 251 Cape May Court House   1692 
    Cumberland   156,898 484 Bridgeton   1748 
    Essex 783,969 126 Newark   1683 
    Gloucester 288,288 322 Woodbury   1686 
    Hudson 634,266 46 Jersey City   1840 
    Hunterdon   128,349 428 Flemington   1714 
    Mercer 366,513 225 Trenton  1838 
    Middlesex   809,858 309 New Brunswick   1683 
    Monmouth   630,380 469 Freehold   1683 
    Morris   492,276 460 Morristown   1739 
    Ocean   576,567 629 Toms River   1850 
    Passaic   501,226 185 Paterson   1837 
    Salem   66,083 332 Salem  1694 
    Somerset 323,444 302 Somerville   1688 
    Sussex 149,265 519 Newton   1753 
    Union 536,499 103 Elizabeth   1857 
    Warren   108,692 357 Belvidere   1824