Massachusetts

Massachusetts has 14 Counties of which 7 are Geographical Census Areas

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  • Massachusetts Association of County Commissioners
    614 High St
    Po Box 310
    Dedham, MA 02026-1897
    Phone: (781)461-6105
    Fax: (781)326-6480

    County NACo
    Member
    2010
    Population
    Square
    Miles
    County Seat Board
    Size
    Founded
    Barnstable 215,888 394 Barnstable   1685 
    Bristol 548,285 553 Taunton   1685 
    Dukes 16,535 103 Edgartown   1695 
    Nantucket* 10,172 45 Nantucket   1695 
    Norfolk 670,850 396 Dedham   1793 
    Plymouth   494,919 659 Plymouth and Brockton   1685 
    Suffolk*   722,023 58 Boston  13  1643 

      * Consolidated City-County Government


    County W/o Govt Structures

    County W/o Govt Structure 2010 Population Square Miles
    Berkshire County 131,219927
    Essex County 743,159493
    Franklin County 71,372699
    Hampden County 463,490617
    Hampshire County 158,080527
    Middlesex County 1,503,085818
    Worcester County 798,5521,511