Winnisquam, NH is a city located in Belknap County, New Hampshire and has a land area of 0.00 square miles (0.00 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Winnisquam, New Hampshire and it is 03289. The area code(s) for Winnisquam is 603.
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