ZIP Code 06378 – Stonington, CT
Stonington, Connecticut · Southeastern Connecticut Planning Region · Eastern time
| ZIP code | 06378 |
|---|---|
| City | Stonington |
| State | Connecticut |
| County | Southeastern Connecticut Planning Region |
| Population | 5,555 |
| Time zone | Eastern · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 20.9 sq mi |
| Center (lat, long) | 41.3832, -71.9084 |
Area codes in this area
These are the area codes that most often serve ZIP 06378 (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
About ZIP 06378
ZIP code 06378 is assigned to Stonington, Connecticut. It lies in Southeastern Connecticut Planning Region. Its Census area covers about 20.9 square miles of land. The closest neighboring ZIP is 06372 (Old Mystic), about 2.2 miles away.
Every address in 06378 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