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Winnebago County, IL Parcels & GIS Data

Winnebago County, IL parcel data: 119,074 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Winnebago County, Illinois parcel data covering 119,074 property records.

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

Winnebago County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 285,350 making it the seventh most populous county in Illinois behind Cook County and its five surrounding collar counties. Its county seat is Rockford.

FIPS 17201

Official county website: https://wincoil.gov

The FIPS code for Winnebago County is 17201.

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Attribute coverage

Winnebago County contains 119,074 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%119,074
parcelid100%119,074
parcelid287.4%104,054
ogparcelid100%119,074
ogparcelid287.3%103,998
parentid<0.1%0
stackid<0.1%0
geoid100%119,074
statefp100%119,074
countyfp100%119,074
countyname100%119,074
cousubfp100%119,074
cousubname100%119,074
tractce100%119,074
tractname100%119,074
taxacctnum<0.1%0
taxyear100%119,074
taxdistrict<0.1%0
usecode<0.1%0
usedesc<0.1%12
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs<0.1%19
numunits<0.1%1
yearbuilt<0.1%0
numfloors<0.1%1
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%119,055
calcarea100%119,074
saleamt<0.1%0
saledate<0.1%0
ownertype100%119,058
ownername100%119,058
owneraddr100%119,062
ownercity100%119,074
ownerstate100%119,074
ownerzip100%119,074
parceladdr100%119,074
parcelcity100%119,074
parcelstate100%119,074
parcelzip100%119,074
legaldesc100%119,074
township100%119,070
section100%119,070
qtrsection100%119,070
range100%119,070
plssdesc100%119,070
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.1%154
accesstype0.8%1,003
iucnclass0.4%435
placename76.6%91,154
placetype4.7%5,573
firmid100%119,074
firmdate100%119,074
fldzone100%119,074
zonesubty97.7%116,376
staticbfe<0.1%9
elevmin99.6%118,649
elevmax99.6%118,649
elevavg99.6%118,649
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
naicscode78.5%93,491
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%119,053
centroidx100%119,074
centroidy100%119,074
surfpointx100%119,074
surfpointy100%119,074
geom100%119,074
extras100%119,074
ownerlist72.6%86,498
placefp75.8%90,237
zoningurl<0.1%0

Schema mapping

How source columns from the acquired Winnebago 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 — Winnebago County, Illinois (17201) 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 primarypin pin dashpin altparcelnumber parcelyear shape_starea__ ownerlastname ownerfirstname ownermiddleinit ownersuffix owneraddress1 ownercity ownerstate ownerzip lophousenumber lophousenbrsuffix lopprefixdirectional lopstreetname lopstreetsuffix loppostdirectional lopcommunityname legaldesc townshipname ownerlastchange geom owneraddress2 taxpayerlastname taxpayerfirstname taxpayermiddleinit taxpayersuffix taxpayeraddress1 taxpayeraddress2 taxpayercity taxpayerstate taxpayerzip optout globalid shape_stlength__ parcelid parcelid2 taxyear taxacres ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity legaldesc township updated 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 100% elevmin 100% elevmax 100% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 97.7% zonesubty 0.0% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 100% parcelstate 100% parcelzip 100% section 100% qtrsection 100% range 100% plssdesc 76.6% placename 78.5% naicscode 72.6% ownerlist 75.8% placefp lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxyear taxacres calcarea ownertype ownername owneraddr ownercity ownerstate ownerzip parceladdr parcelcity parcelstate parcelzip legaldesc township section qtrsection range plssdesc placename firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg naicscode updated centroidx centroidy surfpointx surfpointy geom extras ownerlist placefp publish.parcel_layer columns not fed by these sources (44) — empty or below 50% fill in this county parentid, stackid, taxacctnum, taxdistrict, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft bedrooms, halfbaths, fullbaths, imprvalue, landvalue, agvalue, totalvalue, saleamt, saledate, book, page, block, lot, parceltype, accesstype iucnclass, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, frsid, dfrurl, caapermit, cwapermit rcrapermit, zoningurl PARCEL 16 mapped · 7 transformed · 39 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL primarypin pin dashpin altparcelnumber parcelyear shape_starea__ ownerlastname ownerfirstname ownermiddleinit ownersuffix owneraddress1 ownercity ownerstate ownerzip lophousenumber lophousenbrsuffix lopprefixdirectional lopstreetname lopstreetsuffix loppostdirectional lopcommunityname legaldesc townshipname ownerlastchange geom owneraddress2 taxpayerlastname taxpayerfirstname taxpayermiddleinit taxpayersuffix taxpayeraddress1 taxpayeraddress2 taxpayercity taxpayerstate taxpayerzip optout globalid shape_stlength__ parcelid COALESCE(NULLIF(trim(primarypin), '')::text, NULLIF(trim(pin), … parcelid2 NULLIF(trim(altparcelnumber), '')::text taxyear taxacres (shape_starea__ / 43560.0)::text ownername trim(regexp_replace(concat( nullif(trim(ownerlastname), ''), ';… owneraddr NULLIF(trim(owneraddress1), '')::text ownercity ownerstate ownerzip parceladdr trim(regexp_replace(concat( nullif(concat(nullif(trim(lophousen… parcelcity legaldesc township updated geom extras json_build_object( 'owneraddress2', owneraddress2::text, 'taxpa… not present in source — filled with NULL (39) taxacctnum, usecode, usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths imprvalue, landvalue, agvalue, totalvalue, saleamt, saledate, parcelstate, parcelzip, 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 Winnebago County:

Frequently asked questions

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

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

How many parcels are in Winnebago County, IL?

The current dataset contains 119,074 parcel records for Winnebago County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for Winnebago County, IL?

The FIPS code for Winnebago County, IL is 17201.

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

Each Winnebago 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 Winnebago County, IL parcel data free?

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

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

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated