Courthouses in Janesville, Wisconsin, the US. Courthouses locations in Janesville, Wisconsin. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Funeral home Insurance Lawyer Real estate School Travel University All courthouses in Janesville Eclipse Center Court Courthouse +1 608-755-4123 1741 Adel Street, Janesville, Wisconsin 53546 Write a review Phone Directions Rock County Family Court Courthouse +1 608-757-5547 51 South Main Street, Janesville, Wisconsin 53545 Write a review Phone Website Directions Rock County Paternity Court Courthouse +1 608-757-5633 51 South Main Street, Janesville, Wisconsin 53545 Write a review Phone Directions