Long Island
Water Mill, New York
Water Mill is a hamlet — a community without a village government of its own — in Suffolk County, part of New York's Long Island region, with about 2,500 residents at the 2020 census.
In New York the practical answer turns on the exact address — the school district, any village lines, and how the parcel is assessed all shape the tax bill. The snapshot and official links below are the place to start.
- Type
- Hamlet (CDP)
- County
- Suffolk
- Region
- Long Island
- Population (2020)
- 2,506
Local Almanac
Notes in and around Water Mill
Short, sourced notes tied to this place, its county, or nearby communities.
Nearby · History & Culture
Southampton Village Holds Its Old Records Close
Southampton Village reads differently when the town records, Conscience Point, Shinnecock history, and Halsey House sit in the same frame.
Read this note ->Nearby · Home & Property
Southampton Building Work Starts With Land Management
Southampton property work should begin with the town Building and Zoning office, especially where permits, inspections, or licensing overlap.
Read this note ->Nearby · History & Culture
SoFo Makes Bridgehampton a Natural-History Stop
SoFo gives Bridgehampton a public natural-history institution for East End ecology, education, live interpretation, and field learning beyond beach scenery.
Read this note ->Nearby · History & Culture
Sag Harbor Cinema gives the village a film-culture anchor
Sag Harbor Cinema makes film culture part of Main Street's public identity.
Read this note ->Nearby · History & Culture
Sag Harbor keeps its whaling history on Main Street
The Sag Harbor Whaling Museum gives the village a visible reminder that its waterfront identity was industrial before it was polished.
Read this note ->Suffolk County · Home & Property
Suffolk Owners Can Use the Clerk's Watch List
Suffolk's Homeowner Watch List can email owners when land-record filings show up for a registered property.
Read this note ->Suffolk County · Home & Property
Suffolk Shore Work Needs a Tidal Wetlands Question
A Suffolk shoreline project should check DEC tidal wetland maps and permit rules before clearing, filling, bulkhead, dock, or septic plans move ahead.
Read this note ->Suffolk County · Money & Taxes
Brookhaven tax payments start with the town Receiver
Brookhaven property owners should start tax-payment questions with the town Receiver pages, then separate county, school, and local timing.
Read this note ->Suffolk County · Money & Taxes
Suffolk assessment complaints should start before Grievance Day
Suffolk owners questioning an assessment should learn the state grievance process early, then confirm local assessor deadlines.
Read this note ->Property tax snapshot
About $3–$27 per $1,000 in Suffolk County
Combined full-value rate — county + town/city + school district, per $1,000 of market value (FY2025). On a $300,000 home that's about $800–$8,201 a year before the STAR break. A hamlet has no government of its own — it's taxed at the rates of the town it sits in.
A planning estimate, not a bill. Your exact rate depends on your school district and any village. Confirm with the assessor.
Statewide links
Statewide starting points.
Good to know
- • Your assessed value usually isn't your market value — ask for the equalization rate.
- • Register for STAR; new applicants generally receive a credit instead of an automatic exemption on the bill.
- • Outside the cities, check the well, the septic, and the FEMA flood map before you buy.
Nearby
Nearby places
Tax rates: NYS Dept of Taxation & Finance (ORPTS), Real Property Tax Rates and Levy Data by Municipality, data.ny.gov dataset iq85-sdzs. (FY2025). Population: U.S. Census 2020. Reviewed June 2026. Source data ->
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