First installments are due by January 31, 2016 to the Rock County Treasurer, PO Box 1508, Janesville, WI 53547.
Payments can be made in person at the Courthouse (51 S. Main Street in Janesville) or mailed to PO Box 1508, Janesville, WI 53547. Payments can also be made online with a credit card or electronic check through Rock County's website. It is highly encouraged to pay electronically to avoid mail delays and electronic checks only cost $1.00 and multiple parcels can be paid in one transaction.
All checks should be made out to Rock County Treasurer. Cash payments can only be accepted in person at the Courthouse.
If you have questions regarding the Lottery Credit, please call the Rock County Treasurer at (608)757-5670.
Refer to the colored insert for more information regarding the property tax bills, viewing payment history, and making payments.