New York · FIPS 36063 · County seat: Lockport
Niagara County, NY GIS & Parcel Viewer
Looking for lot lines or a parcel number in Niagara County, NY? The quickest route is Niagara County, NY GIS Viewer, the county parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Niagara 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 | Niagara County, NY GIS Viewer |
|---|---|
| Type | County-run map |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Lockport |
| Population | 209,457 (2023 Census Bureau estimate) |
| Land area | 522 sq mi |
| FIPS code | 36063 |
About the official source
It is a county-level map: Niagara County or the company it hires keeps the parcel layer up to date. As of our October 2026 test, anyone could open it without signing in or paying.
Finding a property on this map
- Press the button above; an ArcGIS Experience Builder app opens in a new tab. Accept any splash or disclaimer screen.
- Search by address or parcel ID, or pan to the area.
- Select a parcel to view the information the publisher makes available.
- Explore the app's panels for layers, legends or printing.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
The county in brief
Niagara County had an estimated 209,457 residents in 2023, according to the Census Bureau. With about 522 square miles of land, that works out to roughly 401 people per square mile. By population it ranks 18th of 62 counties in New York. Another 617 square miles of water fall within its lines, according to Census mapping. Its county seat is Lockport.
Counties next to Niagara County
Parcels close to the edge of Niagara County can fall in the next county over. Neighboring counties:
Before you rely on the lines
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.