Find the last 4 digits (ZIP+4) for an address in 06340

ZIP 06340, Groton, CT is filled in. Just type the street address.

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ZIP Code 06340 – Groton, CT

Groton, Connecticut · Southeastern Connecticut Planning Region · Eastern time

ZIP code06340
CityGroton
StateConnecticut
CountySoutheastern Connecticut Planning Region
Population29,863
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area22.54 sq mi
Center (lat, long)41.3544, -72.0403

Area codes in this area

860959

These are the area codes that most often serve ZIP 06340 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

06320 New London · 3.2 mi06388 West Mystic · 3.4 mi06355 Mystic · 3.6 mi06349 Groton · 4.1 mi06372 Old Mystic · 5.2 mi06375 Quaker Hill · 5.6 mi06335 Gales Ferry · 5.6 mi06385 Waterford · 6 mi

About ZIP 06340

ZIP code 06340 is assigned to Groton, Connecticut. It lies in Southeastern Connecticut Planning Region. Its Census area covers about 22.54 square miles of land. The closest neighboring ZIP is 06320 (New London), about 3.2 miles away.

Every address in 06340 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