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St. Clair County, IL Parcels & GIS Data

St. Clair County, IL parcel data: 140,835 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes St. Clair County, Illinois parcel data covering 140,835 property records.

This page documents parcel-level coverage for St. Clair County, Illinois. Each parcel record carries its boundary polygon (GIS geometry) along with attributes such as the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and most recent sale price and date. Exact fill rates for St. Clair County are listed in the attribute-coverage table below. Preview the data in the interactive explorer, or download the complete St. Clair County property dataset.

St. Clair County is the ninth most populous county in Illinois. Located directly east of St. Louis, the county is part of the Metro East region of the Greater St.

FIPS 17163

Official county website: https://experience.arcgis.com/experience/4f013402a21741cea22c0bc80b676d96

The FIPS code for St. Clair County is 17163.

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Attribute coverage

St. Clair County contains 140,835 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL). For the LBCS columns, only real classifications count: the to-be-determined and not-applicable placeholder codes are excluded.

ColumnCoverageRecords populated
lrid100%140,835
parcelid100%140,806
parcelid2100%140,806
ogparcelid100%140,806
ogparcelid2100%140,806
parentid<0.1%0
stackid<0.1%0
geoid100%140,835
statefp100%140,835
countyfp100%140,835
countyname100%140,835
cousubfp100%140,835
cousubname100%140,835
tractce100%140,835
tractname100%140,835
taxacctnum99.4%139,939
taxyear100%140,806
taxdistrict<0.1%0
usecode7.1%10,001
usedesc39.5%55,682
zoningcode13.3%18,769
zoningdesc<0.1%0
numbldgs100%140,777
numunits70.0%98,567
yearbuilt<0.1%0
numfloors57.0%80,278
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue100%140,806
landvalue100%140,806
agvalue100%140,806
totalvalue100%140,806
taxacres<0.1%0
calcarea100%140,835
saleamt<0.1%0
saledate<0.1%0
ownertype99.4%139,969
ownername99.4%139,969
owneraddr99.4%139,937
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr97.1%136,743
parcelcity97.0%136,603
parcelstate100%140,835
parcelzip100%140,835
legaldesc99.4%139,935
township100%140,833
section100%140,833
qtrsection100%140,833
range100%140,833
plssdesc100%140,833
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype1.1%1,485
accesstype1.1%1,518
iucnclass0.4%585
placename4.3%5,991
placetype4.0%5,612
firmid<0.1%12
firmdate<0.1%12
fldzone<0.1%12
zonesubty<0.1%11
staticbfe<0.1%0
elevmin100%140,830
elevmax100%140,830
elevavg100%140,830
fireplaces<0.1%0
heating<0.1%0
heatfuel<0.1%0
cooling<0.1%0
foundation<0.1%0
roofcover<0.1%0
siding<0.1%0
bldgtype<0.1%0
naicscode3.1%4,369
frsid0.3%463
dfrurl0.3%463
caapermit0.3%463
cwapermit0.3%463
rcrapermit0.3%463
updated100%140,835
centroidx100%140,835
centroidy100%140,835
surfpointx100%140,835
surfpointy100%140,835
geom100%140,835
extras99.9%140,736
ownerlist97.7%137,655
placefp79.2%111,495
zoningurl5.2%7,295
lbcsactivity41.2%57,967
lbcsfunction40.9%57,605
lbcstype53.4%75,146
lbcscharacter86.6%121,967
lbcsownership99.4%139,973
sourceurl<0.1%0

Schema mapping

How source columns from the acquired St. Clair County GIS layers map into the harmonized entity schemas and assemble into the published parcel table, alongside supplemented fields (elevation, flood zone) and deterministic columns.

Schema mapping — St. Clair County, Illinois (17163) 1 entity · most recent acquisition per entity · generated 2026-10-10 direct column transformed (expression) geometry extras json supplemented determined ALL ENTITIES → FINAL PARCEL SCHEMA Harmonized entity columns assemble into publish.parcel_layer — matched by column name. Supplemented fields show their fill rate in this county. SOURCE COLUMNS HARMONIZED ENTITIES PUBLISH.PARCEL_LAYER ZONING zoning hyperlink geom edit_by edit_date create_by create_date globalid ruleid zoningcode sourceurl geom extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 100% taxyear 100% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 100% elevmin 100% elevmax 100% elevavg s_fld_haz_ar · FEMA NFHL 0.0% fldzone 0.0% zonesubty 0.0% firmdate 0.0% firmid supplemented · derived / other pipelines 100% parcelid 100% parcelid2 100% ogparcelid 100% ogparcelid2 99.4% taxacctnum 100% numbldgs 70.0% numunits 57.0% numfloors 100% imprvalue 100% landvalue 100% agvalue 100% totalvalue 99.4% ownertype 99.4% ownername 99.4% owneraddr 97.1% parceladdr 97.0% parcelcity 100% parcelstate 100% parcelzip 99.4% legaldesc 100% township 100% section 100% qtrsection 100% range 100% plssdesc 97.7% ownerlist 79.2% placefp 53.4% lbcstype 86.6% lbcscharacter 99.4% lbcsownership lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear zoningcode numbldgs numunits numfloors imprvalue landvalue agvalue totalvalue calcarea ownertype ownername owneraddr parceladdr parcelcity parcelstate parcelzip legaldesc township section qtrsection range plssdesc firmid firmdate fldzone zonesubty elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist placefp lbcstype lbcscharacter lbcsownership sourceurl publish.parcel_layer columns not fed by these sources (44) — empty or below 50% fill in this county parentid, stackid, taxdistrict, usecode, usedesc, zoningdesc, yearbuilt, bldgsqft, bedrooms, halfbaths, fullbaths, taxacres, saleamt, saledate ownercity, ownerstate, ownerzip, book, page, block, lot, parceltype, accesstype, iucnclass, placename, placetype, staticbfe, fireplaces heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, zoningurl lbcsactivity, lbcsfunction ZONING 4 mapped · 1 transformed · 6 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ZONING zoning hyperlink geom edit_by edit_date create_by create_date globalid ruleid zoningcode sourceurl geom extras ( json_build_object( 'edit_by', edit_by::text, 'edit_date', edi… not present in source — filled with NULL (6) zoningdesc, zoningtype, ordinance, setbacks, restrictions, notes

Neighboring counties

Parcel data for counties bordering St. Clair County:

Frequently asked questions

Where can I find St. Clair County, IL parcel and GIS data?

Land Records publishes a St. Clair County, IL parcel dataset in which every parcel carries its boundary polygon (GIS geometry) along with ownership, assessed value, land use, acreage, and sale history. Preview it in the interactive explorer on this page, or download the full St. Clair County, IL dataset as a GeoPackage or CSV.

How many parcels are in St. Clair County, IL?

The current dataset contains 140,835 parcel records for St. Clair County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for St. Clair County, IL?

The FIPS code for St. Clair County, IL is 17163.

What information does each St. Clair County, IL parcel record include?

Each St. Clair County, IL parcel record includes the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and the most recent sale price and date — plus the parcel boundary polygon. Per-attribute fill rates are listed in the coverage table on this page.

Is St. Clair County, IL parcel data free?

You can preview St. Clair County, IL parcels for free in the interactive explorer. The complete dataset is available as a one-time download or through the nationwide parcel web service; see the download options on this page for current pricing.

Does St. Clair County, IL have an official GIS or property records website?

Yes — the official St. Clair County, IL government website is linked in the county details above. Land Records standardizes St. Clair County, IL assessor and recorder records into a single nationwide parcel schema with GIS boundary geometry.

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated