How do I find a property's tax map number in Islip?

Search the address or click any parcel on the map above. Every Islip tax map number starts with district 0500, followed by section, block and lot — for example 0500-123.00-01.00-005.000. The number stays the same when a property changes hands.

How many parcels are in Islip?

94,494 parcels, based on the Suffolk County tax parcel layer. Each one is drawn to its recorded boundary on the map above and is clickable for its tax map number, lot size and land use.

Is the Islip tax map free to use?

Yes. Parcel boundaries, tax map numbers, lot sizes, land use and the environmental overlays are public record and free here. Owner names, arrears amounts and scoring require a free account.

What zoning districts are in Islip?

Islip publishes its zoning to the public GIS, and it is shown as a map layer above. AA covers the largest share of parcels. Always confirm a specific parcel with the Town before relying on it.

Where does this data come from?

Parcel boundaries come from the Suffolk County tax parcel GIS layer. Overlays come from Suffolk County GIS, the Town's own GIS and NYSDEC, each credited beneath the map. It is a reference tool, not a legal survey or a regulatory determination.

Islip Tax Map

Parcel boundaries, tax map numbers, zoning and environmental overlays for all 94,494 parcels in Islip, New York. Search an address or click any parcel — free, no account required.

Islip is the second-largest town in Suffolk by parcel count, running along the South Shore from the Great South Bay inland. Tax map numbers begin with district 0500. The Town publishes its full zoning schedule to a public GIS, so every parcel here carries a zoning district — from the AAA and AA residential zones to the BUS commercial series.

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How to read an Islip tax map number

Suffolk County identifies every parcel by a 19-digit Suffolk County Tax Map number (SCTM). It is written in four parts, and each part narrows the location:

District: 0500 — the town. Every parcel in Islip begins with these four digits.
Section: A numbered map sheet within the town.
Block: A group of parcels on that sheet, usually bounded by streets.
Lot: The individual parcel. Sub-lots appear after the decimal when land is split.

A Islip tax map number therefore looks like 0500-123.00-01.00-005.000. Unlike a street address it does not change when the property is sold, which is why deeds, tax bills and assessment records all key on it.

Zoning in Islip

Islip publishes its zoning districts to a public GIS, so they are mapped here as an overlay. These are the districts covering the most parcels:

Zoning district	Share of sampled parcels
AA	722
B	697
A	532
AAA	327
AA278	311
CA	274
AAA278	83
BUS1	25
CAA	12
BUS2	7
GSD	3
A278	3

Counts are from a sample of Islip parcels and show relative scale, not exact totals. Zoning shown here is for orientation — confirm any parcel with the Town of Islip before relying on it.

Map layers available for Islip

8 overlay layers apply to Islip parcels — 7 county-wide plus 1 published by the Town itself.

Pine BarrensSuffolk County GIS
School districtsSuffolk County GIS
Fire districtsSuffolk County GIS
Tidal wetlandsSuffolk County GIS
Freshwater wetlandsSuffolk County GIS
HamletsSuffolk County GIS
Special groundwater protectionSuffolk County GIS
Zoning (Islip)Town of Islip GIS

Development constraints

Parcels touching mapped wetlands31

From a sample of Islip parcels. Membership is derived from the parcel centroid, so a parcel on a boundary may appear either side — always verify.

School districts

Islip tax map — common questions

How do I find a property's tax map number in Islip?: Search the address or click any parcel on the map above. Every Islip tax map number starts with district 0500, followed by section, block and lot — for example 0500-123.00-01.00-005.000. The number stays the same when a property changes hands.
How many parcels are in Islip?: 94,494 parcels, based on the Suffolk County tax parcel layer. Each one is drawn to its recorded boundary on the map above and is clickable for its tax map number, lot size and land use.
Is the Islip tax map free to use?: Yes. Parcel boundaries, tax map numbers, lot sizes, land use and the environmental overlays are public record and free here. Owner names, arrears amounts and scoring require a free account.
What zoning districts are in Islip?: Islip publishes its zoning to the public GIS, and it is shown as a map layer above. AA covers the largest share of parcels. Always confirm a specific parcel with the Town before relying on it.
Where does this data come from?: Parcel boundaries come from the Suffolk County tax parcel GIS layer. Overlays come from Suffolk County GIS, the Town's own GIS and NYSDEC, each credited beneath the map. It is a reference tool, not a legal survey or a regulatory determination.

About this data

ParcelIntel is built and operated by Chokdee Properties LLC, a home builder working in Suffolk County. We assembled this map because we needed it ourselves — to check lot lines, zoning and wetlands before committing to a parcel. Parcel geometry comes directly from the Suffolk County tax parcel layer and attributes from islip, nys; nothing here is modelled or estimated.

It is a reference tool, not a survey. Boundaries are as digitised by the County and are not a legal determination of title, buildability or regulatory status. For those, consult the Town of Islip and a licensed surveyor.

See all 94,494 parcels in Islip

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