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Washington County, IL Parcels & GIS Data

Washington County, IL parcel data: 19,743 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Washington County, Illinois parcel data covering 19,743 property records.

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

Washington County is a county located in the U.S. state of Illinois. As of the 2020 census, it had a population of 13,761. Its county seat is Nashville.

FIPS 17189

Official county website: http://washingtonco.illinois.gov/

The FIPS code for Washington County is 17189.

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JeffersonPerryRandolphSt. ClairClintonMarionWashington
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Attribute coverage

Washington County contains 19,743 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%19,743
parcelid100%19,743
parcelid2100%19,743
ogparcelid100%19,743
ogparcelid2100%19,743
parentid<0.1%0
stackid<0.1%0
geoid100%19,743
statefp100%19,743
countyfp100%19,743
countyname100%19,743
cousubfp100%19,743
cousubname100%19,743
tractce100%19,743
tractname100%19,743
taxacctnum<0.1%0
taxyear<0.1%0
taxdistrict<0.1%0
usecode<0.1%0
usedesc<0.1%0
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs32.9%6,487
numunits<0.1%0
yearbuilt<0.1%0
numfloors<0.1%0
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue<0.1%0
landvalue<0.1%0
agvalue<0.1%0
totalvalue<0.1%0
taxacres100%19,743
calcarea100%19,743
saleamt<0.1%0
saledate<0.1%0
ownertype<0.1%0
ownername<0.1%0
owneraddr<0.1%0
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr41.9%8,277
parcelcity41.9%8,265
parcelstate100%19,743
parcelzip100%19,743
legaldesc<0.1%0
township<0.1%0
section<0.1%0
qtrsection<0.1%0
range<0.1%0
plssdesc<0.1%0
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.3%63
accesstype0.3%63
iucnclass0.3%51
placename2.1%415
placetype2.1%409
firmid<0.1%2
firmdate<0.1%2
fldzone<0.1%2
zonesubty<0.1%1
staticbfe<0.1%0
elevmin99.3%19,602
elevmax99.3%19,602
elevavg99.3%19,602
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
naicscode2.1%415
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated<0.1%0
centroidx100%19,743
centroidy100%19,743
surfpointx100%19,743
surfpointy100%19,743
geom100%19,743
extras100%19,743
ownerlist<0.1%0

Schema mapping

How source columns from the acquired Washington 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 — Washington County, Illinois (17189) 1 entity · most recent acquisition per entity · generated 2026-07-25 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 parcelid apn taxacres parcelstate sourceurl geom 5 cols ⇢ parcelid parcelid2 taxacres parcelstate sourceurl geom extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname geom · derived from geometry geom dem.us_1m · USGS 1m DEM 99.3% elevmin 99.3% elevmax 99.3% elevavg s_fld_haz_ar · FEMA NFHL 0.0% fldzone 0.0% zonesubty 0.0% firmdate 0.0% firmid supplemented · derived / other pipelines 100% parcelzip lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacres calcarea parcelstate parcelzip firmid firmdate fldzone zonesubty elevmin elevmax elevavg centroidx centroidy surfpointx surfpointy geom extras publish.parcel_layer columns not fed by these sources (63) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxyear, taxdistrict, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors bldgsqft, bedrooms, halfbaths, fullbaths, imprvalue, landvalue, agvalue, totalvalue, saleamt, saledate, ownertype, ownername, owneraddr ownercity, ownerstate, ownerzip, parceladdr, parcelcity, legaldesc, township, section, qtrsection, range, plssdesc, book, page, block, lot parceltype, accesstype, iucnclass, placename, placetype, staticbfe, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, updated, ownerlist PARCEL 6 mapped · 5 kept in extras · 48 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid apn taxacres parcelstate sourceurl geom parcelid parcelid2 taxacres parcelstate sourceurl geom extras · 5 source columns preserved as json gid, county_name, fips_code, vintage_id, geoid extras not present in source — filled with NULL (48) taxacctnum, 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, parcelzip, legaldesc, township, section, qtrsection, range, plssdesc, book, page, block, lot, updated, taxdistrict, parentid fireplaces, heating, cooling, foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Washington County:

Frequently asked questions

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

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

How many parcels are in Washington County, IL?

The current dataset contains 19,743 parcel records for Washington County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for Washington County, IL?

The FIPS code for Washington County, IL is 17189.

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

Each Washington 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 Washington County, IL parcel data free?

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

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

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Attribute coverageSchema mappingNeighboring countiesFAQRelated
Washington County, IL Parcels & GIS Data — Property Records & Maps | Land Records