New York · FIPS 36119 · County seat: White Plains
Westchester County, NY GIS & Parcel Viewer
Parcel lookups for Westchester County start at Westchester County Property Viewer. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Westchester County parcel map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Westchester County Property Viewer |
|---|---|
| Type | County-run map |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | White Plains |
| Population | 990,817 (2023 Census Bureau estimate) |
| Land area | 431 sq mi |
| FIPS code | 36119 |
Who runs this map
This map is published by or for Westchester County itself, so it reflects the local parcel layer rather than a third-party copy. When we tested the link in October 2026 it opened with no login and no fee.
Searching for a parcel, step by step
- Open the link. This viewer is an ArcGIS Experience Builder app, so its layout is custom to the publisher.
- Look for a search box or search widget and type in a street address or parcel ID.
- Click a parcel to see its details in a pop-up or side panel.
- Check the toolbar for a layer list or basemap switcher if you want aerials or other layers.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
About Westchester County
Census Bureau figures put Westchester County at about 990,817 people (2023 estimate) on roughly 431 square miles of land, which is about 2,299 residents per square mile. By population it ranks 7th of 62 counties in New York. Census maps also count about 69 square miles of water inside its boundary. Its county seat is White Plains.
Counties next to Westchester County
Westchester County shares a border with the counties below. Each link has its own official map:
A note on accuracy
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.