Winnisquam is an unincorporated community in the Lakes Region in Belknap County, New Hampshire, United States.

The village is located at 43°30′07″N 71°30′46″W / 43.50194°N 71.51278°W / 43.50194; -71.51278,[1] around the U.S. Route 3 bridge over the narrows of Lake Winnisquam, and covers portions of three towns: Belmont, Sanbornton, and Tilton.

Winnisquam has a ZIP code of 03289, different from the ZIP codes in each of its component towns.

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