ZIP code 06378
Where is ZIP code 06378?
Stonington, Connecticut
New London County · Standard ZIP code
ZIP code 06378 belongs to Stonington, Connecticut in New London County. 06378 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 401, 860 and 959. About 5,555 people live in the 06378 area, where the median household income is $135,714. The closest ZIP codes are 06372 (Old Mystic, 2.3 mi northwest), 06355 (Mystic, 3.2 mi west) and 06388 (West Mystic, 3.5 mi southwest).
| ZIP code | 06378 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Stonington |
| State | Connecticut (CT) |
| County | New London County |
| Time zone | Eastern Time · now |
| Area codes | 401, 860, 959 |
| Coordinates | 41.3664, -71.9155 map |
| 3-digit prefix | 063 |
Population and income in 06378
| Population | 5,555 · lower than 61% of Connecticut ZIP codes |
|---|---|
| People per square mile | 266 · lower than 70% of Connecticut ZIP codes |
| Median age | 58.7 years · higher than 95% of Connecticut ZIP codes |
| Men / women | 51% / 49% |
| Median household income | $135,714 · higher than 79% of Connecticut ZIP codes |
| Income per person | $96,042 |
| Below the poverty line | 2.9% |
| Bachelor’s degree or higher | 61% of adults 25+ |
| Median home value | $593,400 · higher than 88% of Connecticut ZIP codes |
| Median rent | $1,750 a month |
| Housing units | 3,297 |
| Households | 2,708 (2.05 people on average) |
| Owners / renters | 78% / 22% |
| Land area | 20.9 sq mi (plus 1.76 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 06378. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 06378
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 06372 | Old Mystic, CT | 2.3 mi NW | PO Box only |
| 06355 | Mystic, CT | 3.2 mi W | Standard |
| 06388 | West Mystic, CT | 3.5 mi SW | PO Box only |
| 06379 | Pawcatuck, CT | 3.5 mi E | Standard |
| 02891 | Westerly, RI | 5.3 mi E | Standard |
| 06359 | North Stonington, CT | 6.4 mi N | Standard |
| 06339 | Ledyard, CT | 6.6 mi NW | Standard |
| 06340 | Groton, CT | 7.4 mi W | Standard |
| 06338 | Mashantucket, CT | 7.9 mi N | PO Box only |
| 02804 | Ashaway, RI | 7.9 mi NE | Standard |
| 06390 | Fishers Island, NY | 8.9 mi SW | PO Box only |
| 06335 | Gales Ferry, CT | 9 mi NW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 06378 or measure the distance to another ZIP code.
How to address mail to 06378
123 MAIN ST
STONINGTON CT 06378
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Lords Point and Shawondassee: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (06378-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 06378?
- 06378 is a Stonington, Connecticut ZIP code.
- What county is 06378 in?
- ZIP code 06378 is in New London County, Connecticut.
- What time zone is ZIP code 06378 in?
- 06378 is in the Eastern Time zone (America/New_York).
- What area code is 06378?
- Phone numbers in ZIP code 06378 use area codes 401, 860 and 959.
- What is the population of ZIP code 06378?
- About 5,555 people live in ZIP code 06378, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 06378?
- The median household income in 06378 is $135,714 a year, higher than 79% of Connecticut ZIP codes.
- What ZIP codes are near 06378?
- The nearest ZIP codes to 06378 are 06372 (Old Mystic, 2.3 miles), 06355 (Mystic, 3.2 miles), 06388 (West Mystic, 3.5 miles) and 06379 (Pawcatuck, 3.5 miles).