New London County, CT ZIP Codes

33 ZIP codes cover all or part of New London County, Connecticut. The Census Bureau counts not published residents in the county, with a median household income of not published and a median home value of not published. Median household income ranges from $59,170 in 06320 to $137,425 in 06355. Its largest communities include Norwich, New London, Groton, Conning Towers-Nautilus Park and Pawcatuck.

New London County (Census county figures)

MeasureCensus figure
Residentsnot published
Householdsnot published
Median household incomenot published
Median home valuenot published
Median agenot published
Median rentnot published

All 33 ZIP codes together

MeasureValue
Residents (sum of ZIP codes)269,636
Households (sum of ZIP codes)112,221
Median household income, range across ZIP codes$59,170 (06320) to $137,425 (06355)
Household-weighted average of ZIP medians (an approximation, not a true median)$94,836
Homeowners67.8%
Households with kids under 1826.7%
Moved in the past year11.9%
Carrier routes in EDDM2GO's route library222 routes, 118,012 homes (26 of 33 ZIP codes)

Top facts

Every ZIP code in New London County

ZIPMailing cityResidentsHouseholdsMedian incomeHome valueHomeownersWith kidsNew moversCarrier routesMailboxesWhy listed
06360Norwich37,21615,880$65,539$245,70055.2%27.6%13.7%3417,086100% of its land
06340Groton29,86312,879$81,792$294,70044.5%26.5%22.9%2113,893100% of its land
06320New London27,70311,808$59,170$253,30036.1%23.5%18.2%2012,826100% of its land
06415Colchester16,0386,604$123,256$366,30077.3%28.1%9.8%127,29787% of its land
06385Waterford15,9666,755$100,484$365,40078.6%29.0%7.2%128,310100% of its land
06351Jewett City15,7606,559$82,976$294,40079.5%26.2%5.3%126,538100% of its land
06355Mystic12,1735,364$137,425$453,40081.0%20.7%12.2%137,200100% of its land
06357Niantic11,3325,000$93,026$397,30076.1%20.6%11.9%96,475100% of its land
06382Uncasville10,1433,673$89,635$267,80077.2%19.6%16.3%94,481100% of its land
06371Old Lyme9,8284,122$132,045$499,40089.1%28.6%9.2%95,184100% of its land
06339Ledyard9,1133,344$106,403$330,50083.8%35.9%6.5%73,497100% of its land
06379Pawcatuck9,0174,125$95,066$406,10069.6%28.8%7.6%84,347100% of its land
06333East Lyme7,3893,004$129,083$439,00074.7%37.2%8.8%73,231100% of its land
06370Oakdale7,3272,602$105,700$332,50092.4%30.6%5.4%62,926100% of its land
06249Lebanon7,1162,834$109,135$345,90088.0%29.1%1.8%72,964100% of its land
06335Gales Ferry6,3072,206$118,116$322,40081.1%40.3%8.4%52,776100% of its land
06378Stonington5,5552,708$135,714$593,40077.8%14.9%12.2%52,552100% of its land
06359North Stonington5,1602,114$123,938$397,10092.9%25.0%7.9%42,223100% of its land
06365Preston4,8071,940$117,045$361,40091.6%23.1%8.9%41,805100% of its land
06420Salem4,3681,811$123,425$405,80086.4%29.9%5.6%41,86598% of its land
06375Quaker Hill3,6701,378$111,833$326,00083.5%23.3%8.3%31,546100% of its land
06330Baltic3,3271,299$98,698$279,40071.4%22.6%5.9%294575% of its land
06380Taftville2,7571,212$63,452$194,30036.1%30.7%18.1%21,494100% of its land
06384Voluntown2,6631,137$106,518$354,90083.8%26.2%10.6%21,087100% of its land
06334Bozrah2,249914$107,969$310,40088.0%24.3%2.4%31,131100% of its land
06254North Franklin2,004716$105,000$326,20084.1%32.7%7.9%2890100% of its land
06353Montville43990——0.0%78.9%0.0%——100% of its land
06350New London County12163$40,950—47.6%7.9%0.0%——100% of its land
06376New London County8930$156,000$444,400100.0%30.0%32.6%——100% of its land
06439Hadlyme6531$187,083$662,500100.0%22.6%0.0%——100% of its land
06336Gilman4411$133,750—36.4%100.0%0.0%——100% of its land
06338Mashantucket278$137,500$433,300100.0%37.5%22.2%——100% of its land
06389Yantic00———————100% of its land

A ZIP code is listed for New London County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.

Cities and communities

Rankings

Price a mailing to New London County ZIP codes

EDDM guides

Pick carrier routes on the EDDM route map

Frequently asked questions

What ZIP codes are in New London County, CT?
06360, 06340, 06320, 06415, 06385, 06351, 06355, 06357, 06382, 06371, 06339, 06379, 06333, 06370, 06249, 06335, 06378, 06359, 06365, 06420, 06375, 06330, 06380, 06384, 06334, 06254, 06353, 06350, 06376, 06439, 06336, 06338 and 06389. Some cross the county line; the table shows each ZIP's share of land in the county.
What is the population of New London County?
not published residents in not published households (ACS 5-year estimates, 2020–2024).
What is the median household income in New London County?
not published for the county as a whole. Its ZIP codes range from $59,170 (06320) to $137,425 (06355).
Which New London County ZIP code has the highest median household income?
06355, at $137,425, among ZIP codes with at least 1,000 residents. See the full ranking of New London County ZIP codes by income.
How many carrier routes and mailboxes are in New London County?
For the 26 of 33 ZIP codes in EDDM2GO's stored route library: 222 carrier routes reaching 118,012 residential and 6,437 business mailboxes. The route map loads the rest when you search them.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.