ParcelioNassau County, New York: parcel data and property records
419,844 Nassau County parcels on one searchable map: owner of record and mailing address and assessed and appraised values, plus lot boundaries and location. Screen by absentee ownership and acreage.
What the data covers
These bars show real field-by-field coverage for Nassau County in our database, so you know exactly what you are getting before you search. Numbers refresh as the county publishes new records.
Not held for Nassau County: vacancy. Those fields are carried where the county publishes them.
On fewer than 5 percent of Nassau County parcels: recorded sales and year built.
Most recent recorded sale on file: 2024-02-26.
Areas covered
Parcel counts by place, largest first: Hempstead (156,574), Oyster Bay (80,337), North Hempstead (32,065), Valley Stream (11,035), Freeport (10,535).
Nearest counties
- Queens County: about 13 mi away, 380,965 parcels
- Bronx County: about 16 mi away, 107,061 parcels
- Kings County: about 19 mi away, 358,712 parcels
- New York County: about 20 mi away, 178,536 parcels
- Westchester County: about 28 mi away, 258,145 parcels
Search Nassau County parcels
The map is free to browse - parcel lines, boundaries, and location. Owner of record, assessed values and the full parcel report come with a plan that costs less than one hour of a title runner's time.
Explore the Nassau County map See plans
Common questions
How many parcels are in Nassau County, New York?
Parcelio carries 419,844 parcel records for Nassau County, New York, with owner information on 99 percent of them.
Can I find out who owns a property in Nassau County?
Yes. Search by owner name, address, or parcel number to pull the record: owner of record and mailing address, assessed values and lot lines on the map.
How do I find vacant land or absentee owners in Nassau County?
We do not hold vacancy data for Nassau County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field. Nassau County does have owner mailing state: 2,937 parcels have an owner mailing address outside New York.
Can I search Nassau County by lot size or acreage?
Yes. Acreage is on 100 percent of Nassau County parcels, mapped from the parcel boundary, and the advanced search filters on it directly - set a minimum and maximum to pull every tract in that range, then stack vacancy or absentee ownership on top.