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ZIP Code 03810 – Alton Bay, NH

Alton Bay, New Hampshire · Belknap County · Eastern time

ZIP code03810
CityAlton Bay
StateNew Hampshire
CountyBelknap County
Area code603
Population2,314
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area23.58 sq mi
Center (lat, long)43.5126, -71.2949

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Nearby ZIP codes

03249 Gilford · 4.1 mi03809 Alton · 5.8 mi03896 Wolfeboro Falls · 6.5 mi03837 Gilmanton Iron Works · 6.6 mi03237 Gilmanton · 7.3 mi03298 Tilton · 7.6 mi03299 Tilton · 7.6 mi03855 New Durham · 7.9 mi

About ZIP 03810

ZIP code 03810 is assigned to Alton Bay, New Hampshire. It lies in Belknap County. Its Census area covers about 23.58 square miles of land. The closest neighboring ZIP is 03249 (Gilford), about 4.1 miles away.

Every address in 03810 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources