ZIP code 06340: Groton, CT
06340 is a ZIP code in Groton, Connecticut, mainly in New London County, part of the Norwich-New London-Willimantic, CT metro area. About 29,863 people live here.
- Population
- 29,863
- Median household income
- $81,792
- Typical home value
- $386,400+5.7% in 12 months
- Median rent
- $1,599gross, per month
- Median age
- 33.7
- Homeowners
- 44.5%of occupied homes
Shaded: ZIP code 06340's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 06340 details
| City | Groton |
|---|---|
| State | Connecticut |
| County | New London County |
| Metro area | Norwich-New London-Willimantic, CT |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 22.5 sq mi, plus 4.7 sq mi of water |
| Population density | 1,325 people per sq mi |
| Bachelor's degree or higher | 39.2% of adults 25+ |
| Average commute | 18.2 minutes |
| Center coordinates | 41.35441, -72.04027 |
Median rent in 06340 by bedrooms
| Size | Median gross rent |
|---|---|
| Studio | $850/mo |
| 1 bedroom | $1,216/mo |
| 2 bedrooms | $1,575/mo |
| 3 bedrooms | $1,939/mo |
| 4 bedrooms | $2,398/mo |
| 5+ bedrooms | $2,674/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 06340
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 06320 | New London, CT | 3.2 mi | 27,703 |
| 06388 | West Mystic, CT | 3.4 mi | — |
| 06355 | Mystic, CT | 3.6 mi | 12,173 |
| 06349 | Groton, CT | 4.1 mi | — |
| 06372 | Old Mystic, CT | 5.3 mi | — |
| 06375 | Quaker Hill, CT | 5.6 mi | 3,670 |
| 06335 | Gales Ferry, CT | 5.6 mi | 6,307 |
| 06385 | Waterford, CT | 6.1 mi | 15,966 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 06340?
A typical home in ZIP code 06340 is worth about $386,400 (Zillow Home Value Index). The median household here earns $81,792 a year. See what buying here would cost per month, with Connecticut average taxes and insurance filled in.
Monthly payment for a $386,400 homeWhat can a $81,792 income afford?Rental property numbers
About ZIP code 06340
What city is ZIP code 06340?
ZIP code 06340 is in Groton, CT, in New London County.
What county is ZIP code 06340 in?
06340 is mainly in New London County, Connecticut.
What is the population of ZIP code 06340?
About 29,863 people live in ZIP code 06340, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 06340 in?
06340 is in Eastern Time (UTC−5). It observes daylight saving time.
What other ZIP codes does Groton have?
Groton, CT also uses 06349.