ZIP code 06420

ZIP 06420 is a small town in New London County, Connecticut, with 4,323 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #194 of 288 ranked by population — larger than 32% of them. The median age here is 39.8 years against 39.1 nationally, a slightly older profile than the country as a whole. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in ZIP 06420 earn a median of $118,839 a year, 51.3% above the national figure of $78,538. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 6.2% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in ZIP 06420 is valued at $369,800, 21.9% above the national figure, while median gross rent runs $1,495 a month, 6.3% above the national figure, or roughly $17,940 across a full year. A household on the local median income would put about 15.1% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 3.1×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 87.7% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

ZIP 06420 is tabulated inside New London County, Connecticut, one of 33 ZIP areas the Census publishes for that county and 288 across Connecticut. Population sits in the small-town band, typically one main street plus the addresses that feed into it. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 06420 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 06420 reports a median household income of $118,839, 13% above the $104,963 county median, and 12% above the $105,813 typical CT ZIP. Owner-occupied homes are valued at a median of $369,800, 11% above the county figure and 6% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,495 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Connecticut charges 6.35% statewide, and no local sales tax is layered on top, so the state rate is the full amount collected in 06420.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 06420 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.