Washington County parcel data

Parcel records for Washington County, Illinois: owners, assessed values, sales and boundaries.
Parcels
20,080
Last updated
Oct 6, 2026
Cities and towns
28
Zoning
Not yet

Cities and towns in Washington County

What each Washington 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 · Washington 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 Washington 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=17189'

Frequently asked questions

How many parcels are in Washington County?
Placestack has 20,080 parcel records for Washington County, Illinois.
What does a Washington 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 Washington County zoning available?
Not yet for Washington County. Parcel records are available now.
How do I get Washington County parcel data?
Through the API, the MCP server or the map in the console.

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