New Castle NH Real Estate
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Browse homes for sale in New Castle, New Hampshire, and find the perfect place to call home on the island, one of the state's premier zip codes.
Browse New Castle NH Real Estate
New Castle is comprised entirely of islands and is the only town in New Hampshire to be entirely comprised of islands. New Castle has gorgeous ocean views as well as a variety of cultural landmarks such as the historic Wentworth by the Sea Hotel & Spa, a coast guard station, and several state parks. Learn more about New Castle here!
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Copyright 2026 PrimeMLS, Inc. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this display comes in part from the IDX Program of PrimeMLS. The information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated August 23, 2026 6:38 PM EDT