Alton Zip Codes - Belknap County NH

Alton, NH Zip Code Map

Alton, NH is a city located in Belknap County, New Hampshire and has a land area of 40.08 square miles (103.81 km2). The water area for the city is 0.84 square miles or 2.18 km2. There is one unique zip code in Alton, New Hampshire and it is 03809. The area code(s) for Alton is 603.

Zip Codes for Alton, NH (1)
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03809 Alton Belknap

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