Ontario County parcel data

Parcel records for Ontario County, New York: owners, assessed values, sales and boundaries.
Parcels
51,158
Last updated
Sep 23, 2026
Cities and towns
25
Zoning
Not yet

Cities and towns in Ontario County

What each Ontario County parcel record includes

  • Parcel number and boundary
  • Owners of record and mailing address
  • Assessed and market value
  • Most recent sale: price, date and deed
  • Lot size, land use and property class
  • Building: year built, area and units
  • Legal description
  • Zoning district
Example parcel · Ontario County2.14 ac
Parcel number0651-45-8213
Owner of recordExample Holdings LLC
Market value 2026$486,300
Last sale$412,000 · 2021
Land useSingle family
Year built1998

Get Ontario County parcels through the API

Search by address, owner, lot size, value or sale date.

Get an API keyRead the API docs 
curl -G 'https://api.placestack.com/v1/parcel' \
  -H "Authorization: Bearer $PLACESTACK_API_KEY" \
  --data-urlencode 'fips=36069'

Frequently asked questions

How many parcels are in Ontario County?
Placestack has 51,158 parcel records for Ontario County, New York.
What does a Ontario County parcel record include?
The parcel number and boundary, owners of record and their mailing address, assessed and market value, the most recent sale, lot size, land use, the main building and the legal description.
Is Ontario County zoning available?
Not yet for Ontario County. Parcel records are available now.
How do I get Ontario County parcel data?
Through the API, the MCP server or the map in the console.

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