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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.


The Town of New Castle is a customer of Portsmouth Water which has instituted a voluntary water usage.  We ask that you minimize lanscape watering and the use of water for other outdoor purposes such as car washing and limit irrigation water use to only occur between the hours of 10pm and 5am to reduce evaporative losses.  

         State of New Hampshire Voter Information Look-up site:
        The State of New Hampshire has a website available to the public that         allows all registered voters to search for their voter information.The last         day for all voters to change their party affiliate, prior to the September 11         state primary, is June 5, 2018. All registered voters are able to retrieve         their party affiliation by entering their Town, First and Last Name along         with their Date of Birth.

        In addition, the voter checklist is posted outside the Town Clerk's Office for review.

  • Green Waste Day - August 14, 2018 from 8 to 11am
  • Hydrant flushing - July 17, 2018 from 8pm to midnight.
The Town of New Castle, NH is accepting applications for the part-time position of Accounting Clerk.  The Accounting Clerk will work under the general direction of the Town Accountant performing a variety of responsible duties of a technical and administrative nature requiring the exercise of judgement, the ability to interpret guidelines and to carry out assignments independently.  
The primary responsibilities of the Accounting Clerk will be in support of the Town’s Water and Sewer Utility accounts, including the processing of tri-annual billing, posting payments, and maintaining customer accounts using BMSI Utility Billing software.  
Example of Duties include, but are not limited to:
  • Maintenance of customer account records;
  • Compilation and entry of meter reading information into billing system;
  • Processing and mailing of customer bills;
  • Collection and posting of customer payments;
  • Posting of late fees and related notices;
  • Monitor accounts receivable;
  • Performs general clerical duties such as typing, filing, word-processing, spreadsheets, and data entry;
  • Perform other miscellaneous tasks at the discretion of the Town Accountant.
Potential for additional duties and responsibilities based on an individual’s skills and experience.
Qualifications:  Accounting experience involving computerized record keeping; and evidence of training and experience in office procedures, word processing, and spreadsheet applications, is required.  Experience with cash management is desired. Working knowledge of municipal accounting is ideal, but not required.  High School Diploma and one year post high school education in bookkeeping or accounting are required; an associate degree in Accounting or related field preferred.
The position is part-time, approximately 8 hours a week with a flexible schedule.
Submit a letter of interest and resume by July 20th 2018 to:   New Castle Town Accountant, PO Box 367, New Castle NH 03854, or email to

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

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