Stony Brook, NY population, income and ZIP codes

Stony Brook CDP is a mid-size town in New York, with 12,827 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #153 of 1,292 ranked by population — larger than 88% of them. The median age here is 45.4 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. 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 Stony Brook CDP earn a median of $162,054 a year, 106.3% above the national figure of $78,538 and 77% above the $91,806 median for the 847 New York cities we cover. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 4.3% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Stony Brook CDP is valued at $587,300, 93.6% above the national figure and 86% above the $315,800 peer median, while median gross rent runs $2,643 a month, 88% above the national figure, or roughly $31,716 across a full year. A household on the local median income would put about 19.6% 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 3.6×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 90% 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.