Land Records LogoLand Records
Contact Us

Warren County, IL Parcels & GIS Data

Warren County, IL parcel data: 14,886 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Warren County, Illinois parcel data covering 14,886 property records.

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

Warren County is a county in the U.S. state of Illinois. According to the 2020 census, it had a population of 16,835. Its county seat is Monmouth.

FIPS 17187

Official county website: http://www.warrencountyil.com

The FIPS code for Warren County is 17187.

ExploreBuyDownload Warren County data
MercerMcDonoughHendersonKnoxWarren
Hosted Web API$200/mo

Attribute coverage

Warren County contains 14,886 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%14,886
parcelid99.6%14,823
parcelid294.8%14,110
ogparcelid99.6%14,823
ogparcelid294.8%14,110
parentid<0.1%0
stackid<0.1%0
geoid100%14,886
statefp100%14,886
countyfp100%14,886
countyname100%14,886
cousubfp100%14,886
cousubname100%14,886
tractce100%14,886
tractname100%14,886
taxacctnum99.4%14,792
taxyear100%14,886
taxdistrict94.8%14,110
usecode94.8%14,110
usedesc94.9%14,121
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs77.4%11,527
numunits56.8%8,449
yearbuilt<0.1%0
numfloors<0.1%4
bldgsqft94.8%14,110
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue50.4%7,503
landvalue59.6%8,876
agvalue36.3%5,399
totalvalue89.5%13,321
taxacres99.3%14,788
calcarea100%14,886
saleamt34.0%5,066
saledate38.3%5,702
ownertype94.8%14,110
ownername94.8%14,110
owneraddr94.7%14,098
ownercity94.8%14,110
ownerstate94.8%14,110
ownerzip94.8%14,109
parceladdr94.7%14,103
parcelcity94.8%14,110
parcelstate100%14,886
parcelzip100%14,886
legaldesc94.8%14,110
township100%14,884
section100%14,884
qtrsection100%14,884
range100%14,884
plssdesc100%14,884
book48.9%7,273
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.1%8
accesstype0.3%47
iucnclass<0.1%7
placename3.0%443
placetype2.9%428
firmid100%14,886
firmdate100%14,886
fldzone100%14,886
zonesubty96.9%14,426
staticbfe0.1%20
elevmin93.6%13,936
elevmax93.6%13,936
elevavg93.6%13,936
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%385
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%14,886
centroidx100%14,886
centroidy100%14,886
surfpointx100%14,886
surfpointy100%14,886
geom100%14,886
extras100%14,886
ownerlist66.7%9,926
placefp40.7%6,066
zoningurl<0.1%0
lbcsactivity90.3%13,442
lbcsfunction90.3%13,441
lbcstype91.9%13,678
lbcscharacter92.1%13,716
lbcsownership94.8%14,114
sourceurl<0.1%0

Schema mapping

How source columns from the acquired Warren 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 — Warren County, Illinois (17187) 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 name tscid statedarea last_edited_date geom 21 cols ⇢ parcelid taxacctnum taxacres updated 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 geom · derived from geometry geom dem.us_1m · USGS 1m DEM 93.6% elevmin 93.6% elevmax 93.6% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 96.9% zonesubty 0.1% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 94.8% parcelid2 94.8% ogparcelid2 94.8% taxdistrict 94.8% usecode 94.9% usedesc 77.4% numbldgs 56.8% numunits 94.8% bldgsqft 50.4% imprvalue 59.6% landvalue 89.5% totalvalue 94.8% ownertype 94.8% ownername 94.7% owneraddr 94.8% ownercity 94.8% ownerstate 94.8% ownerzip 94.7% parceladdr 94.8% parcelcity 100% parcelstate 100% parcelzip 94.8% legaldesc 100% township 100% section 100% qtrsection 100% range 100% plssdesc 66.7% ownerlist 90.3% lbcsactivity 90.3% lbcsfunction 91.9% lbcstype 92.1% lbcscharacter 94.8% lbcsownership lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear taxdistrict usecode usedesc numbldgs numunits bldgsqft imprvalue landvalue totalvalue taxacres calcarea ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc township section qtrsection range plssdesc firmid firmdate fldzone zonesubty staticbfe 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 (38) — empty or below 50% fill in this county parentid, stackid, zoningcode, zoningdesc, yearbuilt, numfloors, bedrooms, halfbaths, fullbaths, agvalue, saleamt, saledate, book, page, block lot, parceltype, accesstype, iucnclass, placename, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, placefp, zoningurl, sourceurl PARCEL 5 mapped · 1 transformed · 21 kept in extras · 49 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL name tscid statedarea last_edited_date geom parcelid taxacctnum taxacres updated to_timestamp(last_edited_date / 1000.0)::text geom extras · 21 source columns preserved as json createdbyrecord, retiredbyrecord, statedareaunit calculatedarea, miscloseratio, misclosedistance, isseed created_user, created_date, last_edited_user, globalid validationstatus, type, accuracy, unclosed, misclosebearing backsightbearing, simcondivtype, historytype originalfeatureoid, originalstatedarea extras not present in source — filled with NULL (49) parcelid2, taxyear, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths fullbaths, imprvalue, landvalue, agvalue, totalvalue, saleamt, saledate, ownername, owneraddr, ownercity, ownerstate, ownerzip, parceladdr parcelcity, parcelstate, parcelzip, legaldesc, township, section, qtrsection, range, plssdesc, book, page, block, lot, sourceurl, taxdistrict parentid, heatfuel, fireplaces, heating, cooling, foundation, roofcover, siding

Neighboring counties

Parcel data for counties bordering Warren County:

Frequently asked questions

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

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

How many parcels are in Warren County, IL?

The current dataset contains 14,886 parcel records for Warren County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for Warren County, IL?

The FIPS code for Warren County, IL is 17187.

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

Each Warren 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 Warren County, IL parcel data free?

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

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated