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Winnebago County, WI Parcels & GIS Data

Winnebago County, WI parcel data: 82,015 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Winnebago County, Wisconsin parcel data covering 82,015 property records.

This page documents parcel-level coverage for Winnebago County, Wisconsin. 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 in the U.S. state of Wisconsin. As of the 2020 census, the population was 171,730. Its county seat is Oshkosh.

FIPS 55139

Official county website: https://ascent.co.winnebago.wi.us/LandRecords

The FIPS code for Winnebago County is 55139.

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Attribute coverage

Winnebago County contains 82,015 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%82,015
parcelid100%82,015
parcelid2100%82,015
ogparcelid100%82,015
ogparcelid2100%82,015
parentid<0.1%0
stackid<0.1%0
geoid100%82,015
statefp100%82,015
countyfp100%82,015
countyname100%82,015
cousubfp100%82,015
cousubname100%82,015
tractce100%82,015
tractname100%82,015
taxacctnum97.1%79,635
taxyear100%82,015
taxdistrict98.6%80,878
usecode88.5%72,593
usedesc1.1%896
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs77.1%63,204
numunits75.6%62,029
yearbuilt<0.1%0
numfloors<0.1%2
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue98.6%80,834
landvalue98.7%80,943
agvalue<0.1%0
totalvalue98.7%80,944
taxacres98.7%80,949
calcarea100%82,015
saleamt<0.1%0
saledate<0.1%0
ownertype0.3%240
ownername96.5%79,148
owneraddr96.5%79,158
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr80.0%65,609
parcelcity98.6%80,875
parcelstate100%82,015
parcelzip100%82,008
legaldesc<0.1%0
township99.9%81,929
section99.9%81,929
qtrsection99.9%81,929
range99.9%81,929
plssdesc99.9%81,929
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.8%697
accesstype1.2%950
iucnclass0.9%739
placename5.0%4,126
placetype5.0%4,071
firmid100%82,014
firmdate100%82,014
fldzone100%82,014
zonesubty94.2%77,298
staticbfe3.4%2,759
elevmin99.9%81,914
elevmax99.9%81,914
elevavg99.9%81,914
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
naicscode5.2%4,227
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%82,015
centroidx100%82,015
centroidy100%82,015
surfpointx100%82,015
surfpointy100%82,015
geom100%82,015
extras100%82,015
ownerlist0.3%240
placefp63.2%51,849
zoningurl<0.1%0
lbcsactivity90.5%74,204
lbcsfunction89.1%73,059
lbcstype90.9%74,536
lbcscharacter90.6%74,276
lbcsownership96.5%79,168
sourceurl<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, Wisconsin (55139) 1 entity · most recent acquisition per entity · generated 2026-10-10 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 stateid taxparceli taxrollyea propclass impvalue lndvalue cntassdval assdacres ownernme1 ownernme2 pstladress siteadress placename state zipcode loaddate geom schooldist id parceldate addnumpref addnum addnumsuff prefix streetname streettype suffix landmarkna unittype unitid schooldi_1 mflvalue estfmkvalu netprpta grsprpta auxclass deedacres gisacres coname parcelfips parcelsrc longitude latitude parcelid parcelid2 taxacctnum taxyear usecode imprvalue landvalue totalvalue taxacres ownername owneraddr parceladdr parcelcity parcelstate parcelzip 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 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 94.2% zonesubty 3.4% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 77.1% numbldgs 75.6% numunits 100% township 100% section 100% qtrsection 100% range 100% plssdesc 63.2% placefp 90.5% lbcsactivity 89.1% lbcsfunction 90.9% lbcstype 90.6% lbcscharacter 96.5% lbcsownership lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear taxdistrict usecode numbldgs numunits imprvalue landvalue totalvalue taxacres calcarea ownertype ownername owneraddr parceladdr parcelcity parcelstate parcelzip township section qtrsection range plssdesc firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras placefp lbcsactivity lbcsfunction lbcstype lbcscharacter lbcsownership publish.parcel_layer columns not fed by these sources (44) — empty or below 50% fill in this county parentid, stackid, usedesc, zoningcode, zoningdesc, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, agvalue, saleamt, saledate ownercity, ownerstate, ownerzip, legaldesc, book, page, block, lot, parceltype, accesstype, iucnclass, placename, placetype, fireplaces heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit, ownerlist zoningurl, sourceurl PARCEL 19 mapped · 2 transformed · 36 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid stateid taxparceli taxrollyea propclass impvalue lndvalue cntassdval assdacres ownernme1 ownernme2 pstladress siteadress placename state zipcode loaddate geom schooldist id parceldate addnumpref addnum addnumsuff prefix streetname streettype suffix landmarkna unittype unitid schooldi_1 mflvalue estfmkvalu netprpta grsprpta auxclass deedacres gisacres coname parcelfips parcelsrc longitude latitude parcelid parcelid2 taxacctnum taxyear usecode imprvalue landvalue totalvalue taxacres ownername btrim(concat_ws(';', NULLIF(ownernme1, ''), NULLIF(ownernme2, '… owneraddr parceladdr parcelcity parcelstate parcelzip updated geom taxdistrict extras ( json_build_object( 'id', id::text, 'parceldate', parceldate::… not present in source — filled with NULL (36) usedesc, zoningcode, zoningdesc, numbldgs, numunits, yearbuilt, numfloors, bldgsqft, bedrooms, halfbaths, fullbaths, agvalue, saleamt, saledate ownercity, ownerstate, ownerzip, legaldesc, township, section, qtrsection, range, plssdesc, book, page, block, lot, sourceurl, 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, WI parcel and GIS data?

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

How many parcels are in Winnebago County, WI?

The current dataset contains 82,015 parcel records for Winnebago County, WI, each with its boundary geometry and assessor attributes.

What is the FIPS code for Winnebago County, WI?

The FIPS code for Winnebago County, WI is 55139.

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

Each Winnebago County, WI 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, WI parcel data free?

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

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

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Attribute coverageSchema mappingNeighboring countiesFAQRelated