Rock County GIS Portal (Wisconsin)

Rock County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate Rock County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These Rock County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in Rock County, Wisconsin. These maps can also include place names, bodies of water, flood zones, property zones, and other geographic information. Some Assessors may keep historic GIS maps that include historic property tax assessments. These maps may be available on the Rock County Assessor Office website.

Janesville Assessor Janesville WI 18 North Jackson Street 53548 608-755-3045

Rock County Property Lister Janesville WI 51 South Main Street 53545 608-757-5610


Rock County Town and City Halls provide municipal services for their town or city, including preserving vital records and maintaining records on their jurisdiction such as Rock County GIS maps. The GIS maps at a Rock County Town or City Hall can include property boundaries, public property, unclaimed parcels, and roads, as well as appraisal values for properties and property tax assessments in Rock County, Wisconsin. These GIS maps may also show population information, place names, zoning boundaries, bodies of water, flood zones, and other geographic information. Some Town and City Halls also have historical maps of their area. These maps are often available to the public on the Rock County Town and City Hall website.

Avon Town Hall Brodhead WI 16513 West Beloit Newark Road 53520 608-897-8181

Beloit City Hall Beloit WI 2200 Milwaukee Road 53511 608-364-2867

Beloit Town Hall Beloit WI 2871 South Afton Road 53511 608-364-2980

Center Town Hall Evansville WI 9119 County Road A 53536 608-876-6658

Clinton Town Hall Clinton WI 700 Meadow Park Drive 53525 608-676-5395

Edgerton City Hall Edgerton WI 12 Albion Street 53534 608-884-3341

Milton City Hall Milton WI 430 East High Street, Ste 3 53563 608-868-6900

Milton City Hall Milton WI 690 South Janesville Street 53563 608-868-6910

Turtle Town Hall Beloit WI 9949 South Turtle Town Hall Road 53511 608-365-5255

Rock County Clerk Offices maintain public records for a county or local government, which includes GIS maps. These maps provide detailed information on the area, including Rock County property maps that show boundaries, public property, property divisions, and in some cases, population information in Rock County, Wisconsin. They may also include property value assessments and property tax rates. Rock County GIS maps can show place names, bodies of water, zoning information, flood zones, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations, and these maps are often available online through the Clerk Office website.

Edgerton Clerk Edgerton WI 12 Albion Street 53534 608-884-3341

Evansville City Clerk Evansville WI 11 West Church Street 53536 608-882-2266

Harmony Township Clerk Milton WI 5911 N Jones Dr 53563 608-868-6065

Jamesville City Clerk Janesville WI 18 North Jackson Street 53548 608-755-3070

Rock County Clerk Janesville WI 51 South Main Street 53545 608-757-5660


Rock County Recorders of Deeds keep real estate records to ensure the accuracy of property and land records. In addition to deeds, Recorders of Deeds also have detailed county and local maps, including Rock County GIS maps that show property lines, building information, public property, unclaimed parcels, as well as property value assessments and property tax information. These GIS maps may also include place names, zoning boundaries, bodies of water, flood zones, and other geographic information in Rock County, Wisconsin. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the Rock County Recorder of Deeds website.

Rock County Recorder of Deeds Janesville WI 51 South Main Street 53545 608-757-5650