ZIP code 11940

ZIP 11940 is a mid-size town in Suffolk County, New York, with 5,508 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #695 of 1,824 ranked by population — larger than 61% of them. The median age here is 44.5 years against 39.1 nationally, a slightly older profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in ZIP 11940 earn a median of $121,250 a year, 54.4% above the national figure of $78,538. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 3.5% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in ZIP 11940 is valued at $626,400, 106.5% above the national figure, while median gross rent runs $2,273 a month, 61.7% above the national figure, or roughly $27,276 across a full year. A household on the local median income would put about 22.5% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 5.2×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 67.6% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. 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 11940 is tabulated inside Suffolk County, New York, one of 108 ZIP areas the Census publishes for that county and 1,826 across New York. 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 11940 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 11940 reports a median household income of $121,250, 6% below the $128,844 county median, and 53% above the $79,429 typical NY ZIP. Owner-occupied homes are valued at a median of $626,400, close to the county figure and 169% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $2,273 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

New York charges 4% statewide, and local governments overlapping 11940 may add county, city or special-district levies on top. We publish the state floor for this ZIP rather than guessing a combined figure, because ZIP boundaries and taxing-district boundaries were drawn for different purposes and do not line up.

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 11940 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.