Median estimated market value for properties in this county.
AssessorSearch county dataSt. Clair County, IL
St. Clair County, IL assessor property search and records
Use this county guide to find official assessor property search resources, recorder and deed links, tax records, GIS parcel maps, permits, and property data insights for St. Clair County, Illinois. Search an address or APN, then jump to official county sources or property tax and value data.
Search a St. Clair County address or APN
Official sources
St. Clair County assessor, recorder, tax, and parcel map sources
Use this table to find the official county source for assessor property search, recorded documents, property tax, GIS parcel maps, permits, and zoning records.
| Record type | Official source | Notes |
|---|---|---|
| Assessed values | St. Clair County Property Tax Inquirystclairil.devnetwedge.com |
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| Deeds and recorded documents | St. Clair County Recorder of Deedswww.co.st-clair.il.us/departments/recorder-of-deeds |
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| Property taxes | St. Clair County Property Tax Inquirystclairil.devnetwedge.com |
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| GIS and parcel maps | St. Clair County Parcel Map Viewerexperience.arcgis.com/experience/4f013402a21741cea22c0bc80b676d96 |
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| Permits and building records | St. Clair County Building Permitswww.co.st-clair.il.us/departments/building-zoning/building-permits |
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| Zoning and land use | St. Clair County Zoning Map Viewerexperience.arcgis.com/experience/d9b9f690c9114bee8c71f031616c9d79 |
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County data
St. Clair County tax rates and property values
County and city-level rollups from AssessorSearch indexed property data. Use these values as directional context, then verify parcel-specific details with the official county sources above.
Median assessed value from county assessment records when available.
AssessorSearch county dataMedian annual property tax amount from indexed tax records when available.
AssessorSearch county dataMedian effective property tax rate calculated from annual tax and value fields.
AssessorSearch county dataCity property data
Top city rollups for estimated value, assessed value, property tax rate, and tax amount.
| City | Median estimated value | Median assessed value | Median effective property tax rate | Median tax amount |
|---|---|---|---|---|
| East Saint Louis | $76,190 | $10,340 | 1.93% | $1,324 |
| Belleville | $225,317 | $51,235 | 1.78% | $3,638 |
| O Fallon | $342,139 | $90,381 | 1.77% | $5,673 |
| Fairview Heights | $226,537 | $51,892 | 1.60% | $3,300 |
| Mascoutah | $277,971 | $70,982 | 1.70% | $4,347 |
| Caseyville | $211,919 | $41,622 | 1.56% | $2,659 |
| Swansea | $250,623 | $60,194 | 1.79% | $4,125 |
| Millstadt | $302,058 | $83,681 | 1.80% | $5,180 |
| Lebanon | $239,394 | $57,189 | 1.83% | $3,965 |
| Freeburg | $283,627 | $75,870 | 1.97% | $5,311 |
FAQ
St. Clair County property records FAQ
Common questions about assessor, deed, tax, GIS, and permit records.
Where can I search St. Clair County property records by address?
Use the official St. Clair County Property Tax Inquiry to search St. Clair County property records by address or parcel number. Use AssessorSearch property search as a free, easy-to-use option to search St. Clair County by address or APN.
How do I find the owners of St. Clair County properties?
Use the official St. Clair County Property Tax Inquiry for county ownership and parcel records when owner names are available online. Use AssessorSearch property search as a free, easy-to-use option to look up St. Clair County properties by address or APN.
Where can I verify assessed value in St. Clair County?
Use the official St. Clair County Property Tax Inquiry for assessed values, parcel details, exemptions, and property characteristics when those records are available online.
Where can I look up St. Clair County property tax bills or payments?
Use the official St. Clair County Property Tax Inquiry for property tax bills, payment history, due dates, or tax collector records.
Where can I find deeds or recorded documents in St. Clair County?
Use the official St. Clair County Recorder of Deeds for deeds, mortgages, liens, plats, and other recorded documents. These records are usually separate from assessor property-value records.
Where can I view parcel maps or GIS data in St. Clair County?
Use the official St. Clair County Parcel Map Viewer for parcel maps, map layers, boundaries, and GIS context. GIS maps should be treated as reference tools, not legal surveys.
Where can I search permits or zoning in St. Clair County?
Use St. Clair County Building Permits for permits and St. Clair County Zoning Map Viewer for zoning or land-use records. City properties may require city-specific permit or planning portals.
Can I build a list of St. Clair County property owners?
Use Affix by AssessorSearch for county property owner lists, filters, exports, skip tracing, and outreach workflows.
Related counties
More Illinois property records
Use related county pages when researching nearby property records or comparing official source patterns.