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Jefferson County, IL Parcels & GIS Data

Jefferson County, IL parcel data: 30,894 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Jefferson County, Illinois parcel data covering 30,894 property records.

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

Jefferson County is a county located in the southern part of the U.S. state of Illinois. According to the 2020 census, it has a population of 37,113. The county seat is Mount Vernon.

FIPS 17081

Official county website: https://jeffersoncounty.illinois.gov/

The FIPS code for Jefferson County is 17081.

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Attribute coverage

Jefferson County contains 30,894 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%30,894
parcelid100%30,894
parcelid278.6%24,295
ogparcelid100%30,894
ogparcelid2<0.1%2
parentid<0.1%0
stackid<0.1%0
geoid100%30,894
statefp100%30,894
countyfp100%30,894
countyname100%30,894
cousubfp100%30,894
cousubname100%30,894
tractce100%30,894
tractname100%30,894
taxacctnum76.6%23,676
taxyear100%30,894
taxdistrict97.9%30,251
usecode98.0%30,283
usedesc2.1%637
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs56.2%17,377
numunits55.2%17,051
yearbuilt<0.1%0
numfloors31.8%9,823
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue98.0%30,273
landvalue98.0%30,273
agvalue98.0%30,273
totalvalue76.6%23,676
taxacres97.9%30,251
calcarea100%30,894
saleamt<0.1%0
saledate2.6%792
ownertype98.0%30,273
ownername98.0%30,273
owneraddr68.5%21,155
ownercity67.6%20,877
ownerstate67.6%20,877
ownerzip67.6%20,877
parceladdr63.3%19,550
parcelcity61.2%18,918
parcelstate100%30,894
parcelzip100%30,894
legaldesc98.0%30,273
township100%30,894
section100%30,894
qtrsection100%30,894
range100%30,894
plssdesc100%30,894
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.7%226
accesstype1.0%313
iucnclass0.1%43
placename42.2%13,045
placetype4.1%1,275
firmid100%30,894
firmdate100%30,894
fldzone100%30,894
zonesubty95.0%29,334
staticbfe1.0%324
elevmin98.5%30,442
elevmax98.5%30,442
elevavg98.5%30,442
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
naicscode46.6%14,401
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated78.6%24,295
centroidx100%30,894
centroidy100%30,894
surfpointx100%30,894
surfpointy100%30,894
geom100%30,894
extras100%30,894
ownerlist72.8%22,485
placefp40.3%12,460
zoningurl<0.1%0

Schema mapping

How source columns from the acquired Jefferson 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 — Jefferson County, Illinois (17081) 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 pin parcel_number alternate_parcel_number class farm_building non_farm_building non_farm_land farm_land gross_acres date_of_sale owner1_name owner2_name owner1_address1 owner1_address2 owner1_csz site_address site_csz legal township_name assessed_last geom tax_code 18 cols ⇢ parcelid parcelid2 usecode imprvalue landvalue agvalue taxacres saledate ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc township updated geom taxdistrict 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 98.5% elevmin 98.5% elevmax 98.5% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 95.0% zonesubty 1.0% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 76.6% taxacctnum 56.2% numbldgs 55.2% numunits 76.6% totalvalue 100% section 100% qtrsection 100% range 100% plssdesc 72.8% ownerlist lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear taxdistrict usecode numbldgs numunits imprvalue landvalue agvalue totalvalue taxacres calcarea saledate 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 publish.parcel_layer columns not fed by these sources (37) — empty or below 50% fill in this county parentid, stackid, usedesc, zoningcode, zoningdesc, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, saleamt, 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 PARCEL 22 mapped · 15 transformed · 18 kept in extras · 32 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL pin parcel_number alternate_parcel_number class farm_building non_farm_building non_farm_land farm_land gross_acres date_of_sale owner1_name owner2_name owner1_address1 owner1_address2 owner1_csz site_address site_csz legal township_name assessed_last geom tax_code parcelid COALESCE(NULLIF(trim(pin), ''), NULLIF(trim(parcel_number), '')… parcelid2 NULLIF(trim(alternate_parcel_number), '')::text usecode imprvalue CASE WHEN farm_building IS NULL AND non_farm_building IS NULL T… landvalue agvalue taxacres saledate ownername NULLIF(trim(concat_ws(';', NULLIF(trim(owner1_name), ''), NULLI… owneraddr NULLIF(trim(concat_ws(' ', NULLIF(trim(owner1_address1), ''), N… ownercity CASE WHEN owner1_csz IS NULL OR trim(owner1_csz) = '' THEN NULL… ownerstate CASE WHEN owner1_csz IS NULL OR trim(owner1_csz) = '' THEN NULL… ownerzip CASE WHEN owner1_csz IS NULL OR trim(owner1_csz) = '' THEN NULL… parceladdr NULLIF(trim(site_address), '')::text parcelcity CASE WHEN site_csz IS NULL OR trim(site_csz) = '' THEN NULL ELS… parcelstate CASE WHEN site_csz IS NULL OR trim(site_csz) = '' THEN NULL ELS… parcelzip CASE WHEN site_csz IS NULL OR trim(site_csz) = '' THEN NULL ELS… legaldesc NULLIF(trim(legal), '')::text township NULLIF(trim(township_name), '')::text updated geom taxdistrict NULLIF(trim(tax_code), '')::text extras · 18 source columns preserved as json township, tax_status, lot_dimension, owner1_id, document_no1 owner2_id, document_no2, owner2_address1, owner2_address2 owner2_csz, mailto_name_id, mailto_name, mailto_address1 mailto_address2, mailto_csz, homesite_acres, farm_acres tax_billed extras not present in source — filled with NULL (32) taxacctnum, taxyear, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths totalvalue, saleamt, section, qtrsection, range, plssdesc, book, page, block, lot, sourceurl, parentid, heatfuel, fireplaces, heating, cooling foundation, roofcover, siding

Neighboring counties

Parcel data for counties bordering Jefferson County:

Frequently asked questions

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

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

How many parcels are in Jefferson County, IL?

The current dataset contains 30,894 parcel records for Jefferson County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for Jefferson County, IL?

The FIPS code for Jefferson County, IL is 17081.

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

Each Jefferson 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 Jefferson County, IL parcel data free?

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

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated