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Union County, IL Parcels & GIS Data

Union County, IL parcel data: 12,957 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Union County, Illinois parcel data covering 12,957 property records.

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

Union County is a county located in the U.S. state of Illinois. According to the 2020 United States census, it had a population of 17,244. Its county seat is Jonesboro.

FIPS 17181

Official county website: http://www.unioncountyil.gov

The FIPS code for Union County is 17181.

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Attribute coverage

Union County contains 12,957 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%12,957
parcelid96.5%12,503
parcelid296.4%12,494
ogparcelid99.5%12,898
ogparcelid299.5%12,898
parentid<0.1%0
stackid<0.1%0
geoid100%12,957
statefp100%12,957
countyfp100%12,957
countyname100%12,957
cousubfp100%12,957
cousubname100%12,957
tractce100%12,957
tractname100%12,957
taxacctnum98.3%12,732
taxyear100%12,957
taxdistrict<0.1%0
usecode98.5%12,766
usedesc6.0%781
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs65.6%8,496
numunits63.0%8,163
yearbuilt<0.1%0
numfloors33.8%4,373
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue98.3%12,736
landvalue98.3%12,736
agvalue<0.1%0
totalvalue98.3%12,736
taxacres98.4%12,750
calcarea100%12,957
saleamt98.3%12,736
saledate<0.1%0
ownertype95.1%12,318
ownername95.1%12,318
owneraddr95.0%12,314
ownercity95.0%12,304
ownerstate0.1%14
ownerzip0.1%14
parceladdr99.0%12,824
parcelcity93.8%12,158
parcelstate100%12,957
parcelzip100%12,957
legaldesc98.4%12,750
township100%12,957
section100%12,957
qtrsection100%12,957
range100%12,957
plssdesc100%12,957
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.3%43
accesstype2.8%357
iucnclass2.7%356
placename42.6%5,517
placetype6.3%818
firmid100%12,957
firmdate100%12,957
fldzone100%12,957
zonesubty88.7%11,488
staticbfe<0.1%0
elevmin95.4%12,359
elevmax95.4%12,359
elevavg95.4%12,359
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
naicscode46.7%6,048
frsid<0.1%1
dfrurl<0.1%1
caapermit<0.1%1
cwapermit<0.1%1
rcrapermit<0.1%1
updated76.8%9,947
centroidx100%12,957
centroidy100%12,957
surfpointx100%12,957
surfpointy100%12,957
geom100%12,957
extras100%12,957
ownerlist80.9%10,487
placefp39.2%5,075
zoningurl<0.1%0

Schema mapping

How source columns from the acquired Union 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 — Union County, Illinois (17181) 1 entity · most recent acquisition per entity · generated 2026-08-30 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 parcel_num alternate_ pin current_as class farm_build non_farm_b farm_land non_farm_l gross_acre gross_sale date_last_ owner1_nam owner2_nam owner3_nam owner1_a_1 owner1_add owner1_csz site_addre site_csz legal township township_n geom union_pin totalacres homesite_a farm_acres tax_status lot_dimens owner1_id document_n owner2_id document_1 owner2_add owner2_a_1 owner2_csz mailto_nam mailto_n_1 mailto_add mailto_a_1 mailto_csz hel_flag his_flag hie_flag hes_flag hep_flag faf_flag vez_flag vet_flag xmpt_flag saf_flag drn_flag dv_flag rvt_flag dis_flag assessed_l tax_billed tax_code current__1 py_non_far py_non_f_1 py_farm_la py_farm_bl owner1_doc owner1_d_1 owner2_doc owner2_d_1 owner3_doc owner3_d_1 owner3_id owner3_add owner3_a_1 owner3_csz net_sale_p esri_oid parcelid parcelid2 taxacctnum taxyear usecode imprvalue landvalue totalvalue taxacres saleamt saledate ownername owneraddr ownercity parceladdr parcelcity legaldesc township plssdesc geom extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 76.8% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 95.4% elevmin 95.4% elevmax 95.4% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 88.7% zonesubty 100% firmdate 100% firmid supplemented · derived / other pipelines 65.6% numbldgs 63.0% numunits 100% parcelstate 100% parcelzip 100% section 100% qtrsection 100% range 80.9% ownerlist lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear usecode numbldgs numunits imprvalue landvalue totalvalue taxacres calcarea saleamt saledate ownertype ownername owneraddr ownercity 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 publish.parcel_layer columns not fed by these sources (41) — empty or below 50% fill in this county parentid, stackid, taxdistrict, usedesc, zoningcode, zoningdesc, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, agvalue 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, placefp, zoningurl PARCEL 21 mapped · 8 transformed · 34 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcel_num alternate_ pin current_as class farm_build non_farm_b farm_land non_farm_l gross_acre gross_sale date_last_ owner1_nam owner2_nam owner3_nam owner1_a_1 owner1_add owner1_csz site_addre site_csz legal township township_n geom union_pin totalacres homesite_a farm_acres tax_status lot_dimens owner1_id document_n owner2_id document_1 owner2_add owner2_a_1 owner2_csz mailto_nam mailto_n_1 mailto_add mailto_a_1 mailto_csz hel_flag his_flag hie_flag hes_flag hep_flag faf_flag vez_flag vet_flag xmpt_flag saf_flag drn_flag dv_flag rvt_flag dis_flag assessed_l tax_billed tax_code current__1 py_non_far py_non_f_1 py_farm_la py_farm_bl owner1_doc owner1_d_1 owner2_doc owner2_d_1 owner3_doc owner3_d_1 owner3_id owner3_add owner3_a_1 owner3_csz net_sale_p esri_oid parcelid parcelid2 taxacctnum taxyear usecode imprvalue (COALESCE(farm_build, 0) + COALESCE(non_farm_b, 0))::text landvalue (COALESCE(farm_land, 0) + COALESCE(non_farm_l, 0))::text totalvalue (COALESCE(farm_land, 0) + COALESCE(farm_build, 0) + COALESCE(no… taxacres saleamt saledate ownername NULLIF(trim(concat_ws(';', NULLIF(trim(owner1_nam), ''), NULLIF… owneraddr COALESCE(NULLIF(trim(owner1_a_1), '')::text, NULLIF(trim(owner1… ownercity (CASE WHEN trim(owner1_csz) ~ '^(.*) [A-Z]{2} [0-9]{5}(-?[0-9]{… parceladdr parcelcity (CASE WHEN trim(site_csz) ~ '^(.*) [A-Z]{2} [0-9]{5}(-?[0-9]{4}… legaldesc township plssdesc geom extras ( json_build_object( 'union_pin', union_pin::text, 'totalacres'… not present in source — filled with NULL (34) usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, agvalue, ownerstate ownerzip, parcelstate, parcelzip, section, qtrsection, range, book, page, block, lot, updated, sourceurl, taxdistrict, parentid, heatfuel fireplaces, heating, cooling, foundation, roofcover, siding

Neighboring counties

Parcel data for counties bordering Union County:

Frequently asked questions

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

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

How many parcels are in Union County, IL?

The current dataset contains 12,957 parcel records for Union County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for Union County, IL?

The FIPS code for Union County, IL is 17181.

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

Each Union 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 Union County, IL parcel data free?

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

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated