Water Mill, NY population, income and ZIP codes

Water Mill CDP is a small town in New York, with 2,218 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #586 of 1,292 ranked by population — larger than 54% of them. The median age here is 56.2 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. 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 Water Mill CDP earn a median of $158,250 a year, 101.5% above the national figure of $78,538 and 72% above the $91,806 median for the 847 New York cities we cover. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 3.4% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Water Mill CDP is valued at $2,000,001, 559.2% above the national figure and 533% above the $315,800 peer median, while median gross rent runs $3,150 a month, 124% above the national figure, or roughly $37,800 across a full year. A household on the local median income would put about 23.9% 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 12.6×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 91.2% 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. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

Home values sit at 12.6× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere. A median age of 56.2 puts Water Mill CDP well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. 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.