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ZIP Code 03257 – New London, NH

New London, New Hampshire · Merrimack County · Eastern time

ZIP code03257
CityNew London
StateNew Hampshire
CountyMerrimack CountySullivan County
Area code603
Population4,484
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area23.55 sq mi
Center (lat, long)43.4177, -71.9906

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Nearby ZIP codes

03233 Elkins · 3 mi03287 Wilmot · 3.8 mi03284 Springfield · 4 mi03751 Georges Mills · 4.8 mi03260 North Sutton · 5 mi03782 Sunapee · 5.5 mi03255 Newbury · 7.4 mi03754 Guild · 7.9 mi

About ZIP 03257

ZIP code 03257 is assigned to New London, New Hampshire. It crosses 2 counties; most of its land is in Merrimack County. Its Census area covers about 23.55 square miles of land. The closest neighboring ZIP is 03233 (Elkins), about 3 miles away.

Every address in 03257 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