Sanbornton, NH is a city located in Belknap County, New Hampshire and has a land area of 49.46 square miles (128.10 km2). The water area for the city is 2.32 square miles or 6.01 km2. There is one unique zip code in Sanbornton, New Hampshire and it is 03269. The area code(s) for Sanbornton is 603.
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