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Clay County, IL Parcels & GIS Data

Clay County, IL parcel data: 16,235 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Clay County, Illinois parcel data covering 16,235 property records.

This page documents parcel-level coverage for Clay 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 Clay County are listed in the attribute-coverage table below. Preview the data in the interactive explorer, or download the complete Clay County property dataset.

Clay County is a county in the southeastern portion of the U.S. state of Illinois. As of the 2020 United States census, the population was 13,288. Since 1842, its county seat has been Louisville, in the center of the county's area.

FIPS 17025

Official county website: https://claycounty.illinois.gov/county-clerk/recorder/

The FIPS code for Clay County is 17025.

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Attribute coverage

Clay County contains 16,235 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%16,235
parcelid100%16,228
parcelid2100%16,228
ogparcelid100%16,228
ogparcelid2100%16,228
parentid<0.1%0
stackid<0.1%0
geoid100%16,235
statefp100%16,235
countyfp100%16,235
countyname100%16,235
cousubfp100%16,235
cousubname100%16,235
tractce100%16,235
tractname100%16,235
taxacctnum<0.1%0
taxyear100%16,235
taxdistrict<0.1%0
usecode95.8%15,557
usedesc2.2%355
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs74.4%12,084
numunits45.4%7,370
yearbuilt<0.1%0
numfloors30.7%4,977
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue95.5%15,497
landvalue95.5%15,497
agvalue95.4%15,495
totalvalue<0.1%2
taxacres95.7%15,542
calcarea100%16,235
saleamt<0.1%0
saledate<0.1%0
ownertype99.5%16,150
ownername99.4%16,140
owneraddr99.5%16,147
ownercity95.3%15,480
ownerstate95.3%15,477
ownerzip89.3%14,497
parceladdr98.0%15,906
parcelcity97.1%15,760
parcelstate100%16,235
parcelzip100%16,235
legaldesc99.6%16,178
township100%16,235
section100%16,235
qtrsection100%16,235
range100%16,235
plssdesc100%16,235
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.1%23
accesstype0.2%30
iucnclass0.1%20
placename2.9%469
placetype2.6%422
firmid99.9%16,218
firmdate99.9%16,218
fldzone99.9%16,218
zonesubty92.6%15,031
staticbfe<0.1%0
elevmin99.5%16,146
elevmax99.5%16,146
elevavg99.5%16,146
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
naicscode2.6%430
frsid0.3%47
dfrurl0.3%47
caapermit0.3%47
cwapermit0.3%47
rcrapermit0.3%47
updated95.7%15,539
centroidx100%16,235
centroidy100%16,235
surfpointx100%16,235
surfpointy100%16,235
geom100%16,235
extras100%16,229
ownerlist84.1%13,654
placefp30.9%5,016
zoningurl<0.1%0
lbcsactivity93.2%15,137
lbcsfunction93.2%15,134
lbcstype95.6%15,527
lbcscharacter78.6%12,754
lbcsownership99.5%16,150
sourceurl<0.1%0

Schema mapping

How source columns from the acquired Clay 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 — Clay County, Illinois (17025) 1 entity · most recent acquisition per entity · generated 2026-10-17 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 PARCEL gis_parcel_number tsc_parcel_number tsc_property_class tsc_bor_non_farm_improvement tsc_bor_non_farm_land tsc_bor_farm_land tsc_acreage tsc_owner1 tsc_owner1_address owner_csz tsc_site_address site_csz tsc_legal_description township geom 2 cols ⇢ parcelid parcelid2 usecode imprvalue landvalue agvalue taxacres ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc township 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 95.7% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 99.5% elevmin 99.5% elevmax 99.5% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 92.6% zonesubty 100% firmdate 100% firmid supplemented · derived / other pipelines 74.4% numbldgs 100% section 100% qtrsection 100% range 100% plssdesc 84.1% ownerlist 93.2% lbcsactivity 93.2% lbcsfunction 95.6% lbcstype 78.6% lbcscharacter 99.5% lbcsownership lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxyear usecode numbldgs imprvalue landvalue agvalue taxacres calcarea ownertype ownername owneraddr ownercity ownerstate ownerzip 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 lbcsactivity lbcsfunction lbcstype lbcscharacter lbcsownership publish.parcel_layer columns not fed by these sources (44) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxdistrict, usedesc, zoningcode, zoningdesc, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths fullbaths, totalvalue, saleamt, saledate, book, page, block, lot, parceltype, accesstype, iucnclass, placename, placetype, staticbfe fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit placefp, zoningurl, sourceurl PARCEL 19 mapped · 6 transformed · 2 kept in extras · 35 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL gis_parcel_number tsc_parcel_number tsc_property_class tsc_bor_non_farm_improvement tsc_bor_non_farm_land tsc_bor_farm_land tsc_acreage tsc_owner1 tsc_owner1_address owner_csz tsc_site_address site_csz tsc_legal_description township geom parcelid parcelid2 usecode imprvalue landvalue agvalue taxacres ownername owneraddr ownercity NULLIF(TRIM(SPLIT_PART(owner_csz::text, ' ', 1)), '')::text ownerstate NULLIF(TRIM(SPLIT_PART(owner_csz::text, ' ', 2)), '')::text ownerzip NULLIF(TRIM(SPLIT_PART(owner_csz::text, ' ', 3)), '')::text parceladdr parcelcity NULLIF(TRIM(SPLIT_PART(site_csz::text, ' ', 1)), '')::text parcelstate NULLIF(TRIM(SPLIT_PART(site_csz::text, ' ', 2)), '')::text parcelzip NULLIF(TRIM(SPLIT_PART(site_csz::text, ' ', 3)), '')::text legaldesc township geom extras · 2 source columns preserved as json tsc_bor_farm_improvement, tsc_bor_total extras not present in source — filled with NULL (35) taxacctnum, taxyear, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths totalvalue, saleamt, saledate, section, qtrsection, range, plssdesc, book, page, block, lot, updated, sourceurl, taxdistrict, parentid heatfuel, fireplaces, heating, cooling, foundation, roofcover, siding

Neighboring counties

Parcel data for counties bordering Clay County:

Frequently asked questions

Where can I find Clay County, IL parcel and GIS data?

Land Records publishes a Clay 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 Clay County, IL dataset as a GeoPackage or CSV.

How many parcels are in Clay County, IL?

The current dataset contains 16,235 parcel records for Clay County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for Clay County, IL?

The FIPS code for Clay County, IL is 17025.

What information does each Clay County, IL parcel record include?

Each Clay 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 Clay County, IL parcel data free?

You can preview Clay 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 Clay County, IL have an official GIS or property records website?

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated