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New Castle, the only town in NH composed entirely of islands, covers approximately 500 acres (.8 square miles) and serves as a scenic residential and recreational community.  New Castle was founded in 1623, chartered in 1679, and incorporated in 1693 during the reign of William and Mary.  Today, in addition to a residential population of slightly more than 1,000, it is home to the Great Island Common recreational park, Wentworth-by-the-Sea Hotel and Spa, a UNH marine research laboratory, a Coast Guard station, and Fort Constitution and Fort Stark state parks.

Photos courtesy of Jim Cerny.

  • Church Guild will be sponsoring their annual Arts and Crafts Fair, Saturday, July 25 from 9am to 3pm with Strawberry Social from 11am to 1pm (Homemade Strawberry Shortcake)
  • Green Waste Dates: August 15, September 12, October 17, November 21
  • The El Galeon Andalucia (tall ship) is moored at the Fish Co-op on Peirce Island for tours. The Privateer Lynx will be open for tours from July 23 to 26 and will be moored at the UNH pier.  More information can be obtained at
  • The 2015 4th of July Parade may be viewed at:

  • RYE Recreation Summer Programs are available at the Town Hall

Need to contact the town office?
  • Phone 603-431-6710
  • Fax 603-433-6198
  • Great Island Common 603-436-1992 (Seasonal)
  • Email Us

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