Rock County Civil Court 51 S Main St Janesville, WI 53545 Phone : (608) 743-2210 Business Category County Government-Courts Courts Rock County Of--court System, Janesville Courts, Civil Janesville, WI 53545 Phone : (608) 743-2210 Business Category Government Offices-County Government Offices & Public Schools Rock County Of--administrative Offices Of Rock County, Court System, Civil Janesville, WI 53545 Phone : (608) 743-2210 Business Category Government Offices-County Government Offices & Public Schools