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ZIP Code 03809 – Alton, NH

Alton, New Hampshire · Belknap County · Eastern time

ZIP code03809
CityAlton
StateNew Hampshire
CountyBelknap County
Area code603
Population3,680
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area40.08 sq mi
Center (lat, long)43.4647, -71.2002

Map

Nearby ZIP codes

03855 New Durham · 2.4 mi03810 Alton Bay · 5.8 mi03887 Union · 6.6 mi03225 Center Barnstead · 7.3 mi03837 Gilmanton Iron Works · 7.4 mi03896 Wolfeboro Falls · 8.6 mi03851 Milton · 9 mi03218 Barnstead · 9.6 mi

About ZIP 03809

ZIP code 03809 is assigned to Alton, New Hampshire. It lies in Belknap County. Its Census area covers about 40.08 square miles of land. The closest neighboring ZIP is 03855 (New Durham), about 2.4 miles away.

Every address in 03809 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