Rock County Tax Assessor


Rock Tax Assessor offices are responsible to carry out the mandate of Wisconsin in Rock county. The law mandates that all real properties are subject to taxation unless exemption is imposed. Tax assessments are necessary in support to the required services to WI residents. Tax assessments go to services such as those provided for law enforcement, education, fire protection, parks and recreation, and many more.

The Rock county directory portal for local tax assessor offices provides a comprehensive guide to the public. The site includes the name of the assigned tax assessor office for easy reference and related transaction.


Rock Tax Assessor: Rock County Real Property Lister

Tax Assessor Office Address: Rock County Courthouse, 51 South Main St., Janesville, WI 53545

Phone: (608)757-5650

Fax: (608)757-5563

Website: http://199.233.45.158/realproperty

Zip Code: 608

Office Hours: Central

Schedule an Appointment with Rock County, Wisconsin Property Tax Assessor

The Rock county, WI tax assessor office provides the necessary services to estimate the real property value within its jurisdiction. The property value is an essential component in computing the property tax bills. The Rock tax assessor office is also tasked to provide supplemental bills, business property taxes, and other vital information for transparency.

Contact your Rock tax assessor office for tax information and other related inquiries and concerns.