Land Records Logo

Land Records

Grant County, WI Parcels & GIS Data

Grant County, WI parcel data: 48,702 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes Grant County, Wisconsin parcel data covering 48,702 property records.

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

Grant County is the most southwestern county in the U.S. state of Wisconsin. As of the 2020 census, the population was 51,938. Its county seat is Lancaster and its largest city is Platteville.

FIPS 55043

Official county website: http://www.co.grant.wi.gov

The FIPS code for Grant County is 55043.

Explore Grant County data
Jo DaviessDubuqueClaytonLafayetteIowaRichlandCrawfordGrant
Buy dataset · $175.00One-time downloadSubscribe · $305.001 year of quarterly updates

Attribute coverage

Grant County contains 48,702 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL).

ColumnCoverageRecords populated
lrid100%48,702
parcelid100%48,702
parcelid2100%48,702
ogparcelid100%48,702
ogparcelid2100%48,702
parentid<0.1%0
stackid<0.1%0
geoid100%48,702
statefp100%48,702
countyfp100%48,702
countyname100%48,702
cousubfp100%48,702
cousubname100%48,702
tractce100%48,702
tractname100%48,702
taxacctnum99.9%48,674
taxyear100%48,689
taxdistrict100%48,689
usecode91.7%44,677
usedesc<0.1%0
zoningcode<0.1%0
zoningdesc<0.1%0
numbldgs0.1%29
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
imprvalue45.3%22,048
landvalue91.7%44,644
agvalue<0.1%0
totalvalue91.7%44,653
taxacres98.0%47,752
calcarea100%48,702
saleamt<0.1%0
saledate<0.1%0
ownertype100%48,684
ownername100%48,684
owneraddr99.9%48,675
ownercity<0.1%0
ownerstate<0.1%0
ownerzip<0.1%0
parceladdr45.8%22,325
parcelcity100%48,686
parcelstate100%48,702
parcelzip100%48,702
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
parceltype0.9%428
accesstype0.9%428
iucnclass0.5%264
placename3.6%1,773
placetype3.6%1,749
firmid99.9%48,654
firmdate99.9%48,654
fldzone99.9%48,654
zonesubty96.8%47,124
staticbfe<0.1%18
elevmin99.8%48,618
elevmax99.8%48,618
elevavg99.8%48,618
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
naicscode20.5%9,972
frsid<0.1%0
dfrurl<0.1%0
caapermit<0.1%0
cwapermit<0.1%0
rcrapermit<0.1%0
updated100%48,702
centroidx100%48,702
centroidy100%48,702
surfpointx100%48,702
surfpointy100%48,702
geom100%48,702
extras100%48,702
lrversion100%48,702

Schema mapping

How source columns from the acquired Grant 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 — Grant County, Wisconsin (55043) 1 entity · most recent acquisition per entity · generated 2026-07-13 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 taxparcelid taxrollyear propclass impvalue lndvalue cntassdvalue assdacres ownernme1 pstladress siteadress placename state zipcode loaddate geom schooldist 29 cols ⇢ 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 100% updated 100% lrversion 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 96.8% zonesubty 0.0% staticbfe 100% firmdate 100% firmid lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear taxdistrict usecode imprvalue landvalue totalvalue taxacres calcarea ownertype ownername owneraddr parceladdr parcelcity parcelstate parcelzip firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras lrversion publish.parcel_layer columns not fed by these sources (48) — empty or below 50% fill in this county parentid, stackid, 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 parceltype, accesstype, iucnclass, placename, placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype naicscode, frsid, dfrurl, caapermit, cwapermit, rcrapermit PARCEL 18 mapped · 29 kept in extras · 36 unmapped (NULL) SOURCE COLUMNS HARMONIZED → PARCEL parcelid stateid taxparcelid taxrollyear propclass impvalue lndvalue cntassdvalue assdacres ownernme1 pstladress siteadress placename state zipcode loaddate geom schooldist parcelid parcelid2 taxacctnum taxyear usecode imprvalue landvalue totalvalue taxacres ownername owneraddr parceladdr parcelcity parcelstate parcelzip updated geom taxdistrict extras · 29 source columns preserved as json parceldate, ownernme2, addnumprefix, addnum, addnumsuffix prefix, streetname, streettype, suffix, landmarkname unittype, unitid, zip4, schooldistno, improved, forestvalue estfmkvalue, netprpta, grsprpta, auxclass, deedacres gisacres, coname, parcelfips, parcelsrc, shape_area shape_len, longitude, latitude extras 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 fireplaces, heating, cooling, foundation, roofcover, siding, heatfuel

Neighboring counties

Parcel data for counties bordering Grant County:

On this page

Attribute coverageSchema mappingNeighboring countiesRelated