Union County parcel data

Parcel records for Union County, Ohio: owners, assessed values, sales and boundaries.
Parcels
37,630
Last updated
Oct 6, 2026
Cities and towns
20
Zoning
Not yet

Cities and towns in Union County

What each Union 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 · Union 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 Union 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=39159'

Frequently asked questions

How many parcels are in Union County?
Placestack has 37,630 parcel records for Union County, Ohio.
What does a Union 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 Union County zoning available?
Not yet for Union County. Parcel records are available now.
How do I get Union County parcel data?
Through the API, the MCP server or the map in the console.

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