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ZIP Code 03820 – Dover, NH

Dover, New Hampshire · Strafford County · Eastern time

ZIP code03820
CityDover
StateNew Hampshire
CountyStrafford County
Area code603
Population33,440
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area27.28 sq mi
Center (lat, long)43.1864, -70.8836

Map

Nearby ZIP codes

03821 Dover · 0.9 mi03822 Dover · 0.9 mi03823 Madbury · 3 mi03869 Rollinsford · 3.1 mi03878 Somersworth · 4.6 mi03824 Durham · 5.1 mi03903 Eliot · 6.1 mi03908 South Berwick · 7.3 mi

About ZIP 03820

ZIP code 03820 is assigned to Dover, New Hampshire. It lies in Strafford County. Its Census area covers about 27.28 square miles of land. The closest neighboring ZIP is 03821 (Dover), about 0.9 miles away.

Every address in 03820 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