Union County, IL: Assessor or Supervisor of Assessments
The office that sets each property's value and classification. Start here for valuation notices, exemptions and appeals.
Union County Assessor or Supervisor of Assessments
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What you can look up here
- Property ownerFind the owner of record for a parcel.
- Property taxesTax statements, amounts due, values, and how to pay.
- Property recordsValues, classification, building details, and sales history for a parcel.
About this resource
- Provided by
- Union County (official)
- Covers
- Union County, IL
- Link status
- Opened normally at the last check
- Link checked
- Oct 19, 2026
- Web address
- https://www.unioncountyil.gov/supervisor-of-assessments/
Who to contact
- Union County Assessor or Supervisor of AssessmentsProperty valuation and classification.
- Address
- 309 W Market Street, Jonesboro, IL 62952
- Website
- Visit website
- Union County TreasurerProperty tax billing and collection.
- Address
- 309 W Market Street, Jonesboro, IL 62952
- Website
- Visit website
- Union County GISUnion County Supervisor of Assessments keeps the maps and GIS for Union County.
- Phone
- 618-833-8051
- Address
- 309 W Market Street, Jonesboro, IL 62952
- Website
- Visit website
More for Union County, IL
- Union County GIS mapCounty GIS map
- Union County property tax inquiryProperty owner · Property records · Parcel number
- Illinois GIS data downloadsAerial imagery · GIS data downloads · Elevation · Addresses and 911 numbers
- Union County zoning and land useZoning
- FEMA Flood Map Service CenterFlood zones
- Illinois drainage districts and drainage commissionersWetlands
- USDA Web Soil SurveySoils
- Illinois Environmental Protection AgencyLakes and water
- Union County property tax search and paymentProperty taxes · Property records
- Union County RecorderProperty records · Deeds and land records · Plats
- Union County building and land use permitsZoning · Building permits
- Union County roads and public worksRoads