Tax parcel lookup for the towns of eastern Long Island
Suffolk County covers the eastern two-thirds of Long Island, from denser communities near the Nassau County line out through the North and South Forks to Montauk Point. It includes ten towns — among them Brookhaven, Islip, Huntington, Riverhead, and Southampton — spanning suburban neighborhoods, the East End's wine country, and well-known shoreline communities in the Hamptons.
NY Property Peek's dataset includes over 580,000 individual tax parcels across Suffolk County, each with details like year built, square footage, bedroom and bathroom counts, and school district where available — pulled from New York State's statewide tax parcel records.
View the interactive map for Suffolk County →NY Property Peek holds 586,600 tax parcel records for Suffolk County, spread across 42 towns, cities and villages and 70 school districts. The median Suffolk County parcel sits on 0.29 acres. The median full market value on file is $534,375.
The most common property classes among the 569,035 Suffolk County parcels that carry one. New York State assigns every parcel a class code describing how it is used.
| Property class | Parcels | Share |
|---|---|---|
| One family year-round residence | 425,472 | 75% |
| Residential vacant land | 35,940 | 6% |
| Condominium | 11,740 | 2% |
| Two family year-round residence | 10,710 | 2% |
| One family year-round residence with accessory apartment | 7,672 | 1% |
Where Suffolk County's parcels are, by the municipality each one is assessed in.
| Municipality | Parcels | Share of county |
|---|---|---|
| Brookhaven | 171,856 | 29% |
| Islip | 94,777 | 16% |
| Huntington | 68,286 | 12% |
| Babylon | 51,315 | 9% |
| Southampton | 41,121 | 7% |
| Smithtown | 40,713 | 7% |
| East Hampton | 22,442 | 4% |
| Southold | 17,700 | 3% |
Every figure above is counted directly from the 586,600 Suffolk County records in this site's copy of New York State's statewide tax parcel dataset — none of it is estimated or modelled. Suffolk County's records in this dataset do not populate year built and finished living area, so they are left out rather than guessed. Assessment records are a snapshot of what each assessor filed, so an individual parcel can be out of date or incomplete. Nothing here is a title search or a legal description of a property.