New York · FIPS 36069 · County seat: Canandaigua
Ontario County, NY GIS & Parcel Viewer
Here is the direct link to the county parcel map covering Ontario County, NY: the Ontario County parcel map. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Ontario County parcel map ↗
Opens oncorng.co.ontario.ny.us in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Ontario County parcel map |
|---|---|
| Type | County-run map |
| Website | oncorng.co.ontario.ny.us |
| Access | Free, no login (checked Oct 2026) |
| County seat | Canandaigua |
| Population | 112,494 (2023 Census Bureau estimate) |
| Land area | 644 sq mi |
| FIPS code | 36069 |
About the official source
It is a county-level map: Ontario County or the company it hires keeps the parcel layer up to date. When we tested the link in October 2026 it opened with no login and no fee.
Finding a property on this map
- Open the official link in a new tab.
- Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
- Zoom in and click a parcel to see its details.
- Use the map's layer controls to add aerials or other layers if they're offered.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
About Ontario County
Census Bureau figures put Ontario County at about 112,494 people (2023 estimate) on roughly 644 square miles of land, which is about 175 residents per square mile. Among New York's 62 counties, it is the 26th largest by population. The county seat is Canandaigua.
Nearby parcel maps
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Ontario County:
A note on accuracy
Treat the map as a guide, not a boundary survey: parcel outlines are often shifted a bit from the real corners. A licensed surveyor settles exact lines.