WISCONSIN COUNTY PARCEL MAPS

Grant County parcel map and property owners

By GoGIS · 2025 tax roll, V12 statewide parcels · Updated October 31, 2026

WI 2026 puts all 48,765 parcels in Grant County on your phone: owner names, site addresses, assessed values and acreage from the county’s 2025 tax roll. The county download is about 10 MB, and once it’s on your phone you can search it and tap any parcel with no signal.

The parcels cover 728,056 mapped acres across 52 towns, villages and cities, and 13 school districts. The most parcels are in the City of Platteville. The data is the State Cartographer’s Office V12 statewide parcel map, loaded from the county on March 12, 2026.

Map of every parcel in Grant County, Wisconsin, colored by tax class — Every parcel in Grant County, colored by the tax roll’s class of property. Drawn from the same V12 data WI 2026 downloads.

What the Grant County records include

Counties fill in the statewide schema differently. This is how complete Grant County’s 2025 records are:

Grant County parcel records with each field filled in
Field	Filled in
Owner name	99.7% of parcels
Site (street) address	46% of parcels
Assessed or estimated value	92.8% of parcels
Assessed or deeded acres	96.9% of parcels
Net property tax	92.8% of parcels

Only 46% of parcels have a street address, which is normal for rural land: fields and woods often have no house number. Search by owner name or parcel ID to find those.

How the land is classed

By mapped area, Grant County is agricultural 84%, residential 5%, government-owned / county forest 5%, undeveloped / ag forest 2%. The median estimated fair market value of a residential parcel is $173,700, across 15,937 residential parcels with a value.

In WI 2026, open the legend and color the map by Class of Property to see the same picture, or by Estimated Fair Market Value to see where values rise and fall.

Deer season: public land and Managed Forest Law

The tax roll marks parcels that are government-owned or enrolled in Wisconsin’s forest tax programs. In Grant County:

Federal-owned: 3,730 acres in 46 parcels
State-owned: 22,050 acres in 586 parcels
County-owned: 1,857 acres in 399 parcels
Managed Forest Law, open to public hunting, fishing, hiking, sightseeing and cross-country skiing: 1,466 acres in 48 parcels
Managed Forest Law, closed (no public access without permission): 32,062 acres

In WI 2026, color the map by Auxiliary Class of Property to see these parcels, and tap one for the owner and acreage. The acreages are whole-parcel areas from the tax roll: a parcel that is only partly enrolled counts in full, and the tax roll doesn’t show posted areas or access routes. Before you hunt, check the DNR’s map of private forest land open to the public and the signs on the ground.

Towns, villages and cities in Grant County

Every parcel carries its municipality, so you can search a town name in WI 2026 or filter the attribute table to one place. Parcel counts in the 2025 data:

City of Platteville 3,427
Town of Jamestown 1,978
City of Lancaster 1,912
Town of Potosi 1,535
City of Boscobel 1,529
Town of Platteville 1,433
Town of Beetown 1,378
Town of Muscoda 1,245
Town of Smelser 1,233
City of Fennimore 1,230
Town of Waterloo 1,219
Town of Paris 1,200
Town of Hazel Green 1,113
Town of Liberty 1,103
Town of Harrison 1,101
Town of Lima 1,064
Town of Marion 1,062
Town of Bloomington 1,039
Town of Ellenboro 1,038
Town of Hickory Grove 1,026
Town of Wyalusing 1,024
Town of Mt Ida 1,012
Town of North Lancaster 1,002
Town of South Lancaster 965
Town of Glen Haven 960
City of Cuba City 952
Town of Cassville 911
Town of Fennimore 908
Town of Castle Rock 907
Town of Clifton 891
Town of Wingville 856
Town of Patch Grove 840
Town of Little Grant 829
Town of Watterstown 792
Town of Mt Hope 768
Town of Woodman 742
Village of Muscoda 742
Village of Cassville 645
Village of Hazel Green 610
Village of Dickeyville 565
Village of Potosi 474
Village of Bloomington 454
Village of Bagley 432
Town of Millville 406
Village of Montfort 398
Town of Boscobel 381
Village of Livingston 379
Village of Blue River 341
Village of Tennyson 189
Village of Mt Hope 139
Village of Patch Grove 139
Village of Woodman 97

Working near the county line?

Grant County borders Crawford County, Iowa County, Lafayette County and Richland County. Download the neighboring counties too, and WI 2026 searches across all of them at once.

Where the data comes from

Parcel data is the Wisconsin Statewide Parcel Map Database (V12), a public-domain product of the Wisconsin Land Information Program and the State Cartographer’s Office, UW–Madison, built from Grant County’s 2025 tax roll. It is a snapshot, not a live feed: for a sale, a survey or a tax question, check with Grant County directly.