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Nassau County, NY Parcels & GIS Data

Nassau County, NY parcel data: 407,635 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Nassau County, New York parcel data covering 407,635 property records.

This page documents parcel-level coverage for Nassau County, New York. Each parcel record carries its boundary polygon (GIS geometry) along with attributes such as the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and most recent sale price and date. Exact fill rates for Nassau County are listed in the attribute-coverage table below. Preview the data in the interactive explorer, or download the complete Nassau County property dataset.

Nassau County is a densely populated and affluent suburban county located on Long Island, immediately to the east of New York City, bordering the Long Island Sound on the north and the open Atlantic Ocean to the south. As of the 2020 United States census, Nassau County's population was 1,395,774, making it the sixth-most populous county in the State of New York and 29th in the nation, reflecting an increase of 56,242 (+4.2%) from the 1,339,532 residents enumerated at the 2010 census. By 2025, Nassau's population was approaching 1.4 million, driven by a high influx of Asians. The county seat is Mineola, while Nassau County's largest and most populous town is Hempstead.

FIPS 36059

Official county website: http://www.nassaucountyny.gov

The FIPS code for Nassau County is 36059.

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Attribute coverage

Nassau County contains 407,635 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL). For the LBCS columns, only real classifications count: the to-be-determined and not-applicable placeholder codes are excluded.

ColumnCoverageRecords populated
lrid100%407,635
parcelid100%407,635
parcelid2100%407,585
ogparcelid100%407,635
ogparcelid2100%407,585
parentid<0.1%0
stackid<0.1%0
geoid100%407,635
statefp100%407,635
countyfp100%407,635
countyname100%407,635
cousubfp100%407,635
cousubname100%407,635
tractce100%407,635
tractname100%407,635
taxacctnum<0.1%17
taxyear100%407,635
taxdistrict<0.1%2
usecode<0.1%34
usedesc99.0%403,436
zoningcode0.1%319
zoningdesc2.5%10,310
numbldgs100%407,635
numunits0.2%746
yearbuilt<0.1%50
numfloors0.2%712
bldgsqft<0.1%34
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue<0.1%0
landvalue<0.1%52
agvalue<0.1%0
totalvalue<0.1%52
taxacres<0.1%36
calcarea100%407,635
saleamt<0.1%0
saledate<0.1%0
ownertype<0.1%52
ownername<0.1%52
owneraddr<0.1%2
ownercity<0.1%2
ownerstate<0.1%2
ownerzip<0.1%2
parceladdr99.9%407,426
parcelcity99.9%407,416
parcelstate100%407,635
parcelzip100%407,490
legaldesc<0.1%0
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book<0.1%0
page<0.1%0
block64.1%261,382
lot<0.1%34
parceltype0.4%1,600
accesstype0.4%1,600
iucnclass0.1%337
placename4.3%17,529
placetype4.2%17,319
firmid100%407,635
firmdate100%407,635
fldzone100%407,635
zonesubty89.6%365,272
staticbfe10.3%41,832
elevmin100%407,521
elevmax100%407,521
elevavg100%407,521
fireplaces<0.1%0
heating<0.1%0
heatfuel<0.1%0
cooling<0.1%0
foundation<0.1%0
roofcover<0.1%0
siding<0.1%0
bldgtype<0.1%0
naicscode4.3%17,545
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%407,635
centroidx100%407,635
centroidy100%407,635
surfpointx100%407,635
surfpointy100%407,635
geom100%407,635
extras100%407,635
ownerlist<0.1%52
placefp99.9%407,063
zoningurl<0.1%32
lbcsactivity98.7%402,487
lbcsfunction98.7%402,286
lbcstype98.4%401,310
lbcscharacter99.5%405,659
lbcsownership0.7%2,729
sourceurl<0.1%0

Schema mapping

How source columns from the acquired Nassau County GIS layers map into the harmonized entity schemas and assemble into the published parcel table, alongside supplemented fields (elevation, flood zone) and deterministic columns.

Schema mapping — Nassau County, New York (36059) 2 entities · most recent acquisition per entity · generated 2026-10-10 direct column transformed (expression) geometry extras json supplemented determined ALL ENTITIES → FINAL PARCEL SCHEMA Harmonized entity columns assemble into publish.parcel_layer — matched by column name. Supplemented fields show their fill rate in this county. SOURCE COLUMNS HARMONIZED ENTITIES PUBLISH.PARCEL_LAYER PARCEL bbl landuse zonedist1 numbldgs unitstotal yearbuilt numfloors bldgarea assessland assesstot lotarea ownername address zipcode block lot geom borough cd bctcb2020 schooldist council firecomp policeprct healthcenterdistrict healtharea sanitboro sanitdistrict sanitsub zonedist2 zonedist3 zonedist4 overlay1 overlay2 spdist1 spdist2 spdist3 ltdheight splitzone bldgclass easements ownertype comarea resarea officearea retailarea garagearea strgearea factryarea otherarea areasource unitsres lotfront lotdepth bldgfront bldgdepth ext proxcode irrlotcode lottype bsmtcode exempttot yearalter1 yearalter2 histdist landmark builtfar residfar commfar facilfar borocode condono tract2010 xcoord ycoord zonemap zmcode sanborn taxmap edesignum appbbl appdate plutomapid firm07_flag pfirm15_flag version dcpedited latitude longitude notes globalid parcelid usecode zoningcode numbldgs numunits yearbuilt numfloors bldgsqft landvalue totalvalue taxacres ownername parceladdr parcelzip block lot geom extras ZONING geom zone title category descriptio 24 cols ⇢ geom zoningcode zoningdesc zoningtype notes extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 100% taxyear 100% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 100% elevmin 100% elevmax 100% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 89.6% zonesubty 10.3% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 100% parcelid2 100% ogparcelid2 99.0% usedesc 100% parcelcity 100% parcelstate 100% placefp 98.7% lbcsactivity 98.7% lbcsfunction 98.4% lbcstype 100% lbcscharacter lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxyear usecode usedesc zoningcode zoningdesc numbldgs numunits yearbuilt numfloors bldgsqft landvalue totalvalue taxacres calcarea ownertype ownername parceladdr parcelcity parcelstate parcelzip block lot firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras placefp lbcsactivity lbcsfunction lbcstype lbcscharacter publish.parcel_layer columns not fed by these sources (46) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxdistrict, bedrooms, halfbaths, fullbaths, imprvalue, agvalue, saleamt, saledate, owneraddr, ownercity ownerstate, ownerzip, legaldesc, township, section, qtrsection, range, plssdesc, book, page, parceltype, accesstype, iucnclass, placename placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit rcrapermit, ownerlist, zoningurl, lbcsownership, sourceurl PARCEL 18 mapped · 2 transformed · 37 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL bbl landuse zonedist1 numbldgs unitstotal yearbuilt numfloors bldgarea assessland assesstot lotarea ownername address zipcode block lot geom borough cd bctcb2020 schooldist council firecomp policeprct healthcenterdistrict healtharea sanitboro sanitdistrict sanitsub zonedist2 zonedist3 zonedist4 overlay1 overlay2 spdist1 spdist2 spdist3 ltdheight splitzone bldgclass easements ownertype comarea resarea officearea retailarea garagearea strgearea factryarea otherarea areasource unitsres lotfront lotdepth bldgfront bldgdepth ext proxcode irrlotcode lottype bsmtcode exempttot yearalter1 yearalter2 histdist landmark builtfar residfar commfar facilfar borocode condono tract2010 xcoord ycoord zonemap zmcode sanborn taxmap edesignum appbbl appdate plutomapid firm07_flag pfirm15_flag version dcpedited latitude longitude notes globalid parcelid usecode zoningcode numbldgs numunits yearbuilt numfloors bldgsqft landvalue totalvalue taxacres (lotarea / 43560.0)::text ownername parceladdr parcelzip block lot geom extras ( CAST(json_build_object( 'borough', borough::text, 'cd', cd::t… not present in source — filled with NULL (37) parcelid2, taxacctnum, taxyear, usedesc, zoningdesc, bedrooms, halfbaths, fullbaths, imprvalue, agvalue, saleamt, saledate, owneraddr ownercity, ownerstate, ownerzip, parcelcity, parcelstate, legaldesc, township, section, qtrsection, range, plssdesc, book, page, updated sourceurl, taxdistrict, parentid, heatfuel, fireplaces, heating, cooling, foundation, roofcover, siding ZONING 5 mapped · 4 transformed · 24 kept in extras · 4 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ZONING geom zone title category descriptio geom zoningcode COALESCE(zone::text, '') zoningdesc COALESCE(title::text, '') zoningtype COALESCE(category::text, '') notes COALESCE(descriptio::text, '') extras · 24 source columns preserved as json ncid, parcelkey, roll_year, t_section, t_block, t_lot_numb t_lot_suff, t_condo_bu, t_condo_un, t_owner_fi, t_owner_la t_company_, owner, t_property, t_proper_1, t_proper_2 t_proper_3, t_proper_4, t_lot_grou, t_total_la, t_total_as t_parcel_s, t_prop_cla, village_us extras not present in source — filled with NULL (4) ordinance, setbacks, restrictions, sourceurl

Neighboring counties

Parcel data for counties bordering Nassau County:

Frequently asked questions

Where can I find Nassau County, NY parcel and GIS data?

Land Records publishes a Nassau County, NY parcel dataset in which every parcel carries its boundary polygon (GIS geometry) along with ownership, assessed value, land use, acreage, and sale history. Preview it in the interactive explorer on this page, or download the full Nassau County, NY dataset as a GeoPackage or CSV.

How many parcels are in Nassau County, NY?

The current dataset contains 407,635 parcel records for Nassau County, NY, each with its boundary geometry and assessor attributes.

What is the FIPS code for Nassau County, NY?

The FIPS code for Nassau County, NY is 36059.

What information does each Nassau County, NY parcel record include?

Each Nassau County, NY parcel record includes the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and the most recent sale price and date — plus the parcel boundary polygon. Per-attribute fill rates are listed in the coverage table on this page.

Is Nassau County, NY parcel data free?

You can preview Nassau County, NY parcels for free in the interactive explorer. The complete dataset is available as a one-time download or through the nationwide parcel web service; see the download options on this page for current pricing.

Does Nassau County, NY have an official GIS or property records website?

Yes — the official Nassau County, NY government website is linked in the county details above. Land Records standardizes Nassau County, NY assessor and recorder records into a single nationwide parcel schema with GIS boundary geometry.

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated