Payments must be made to the St. Croix County Treasurer’s Office located at St. Croix County Government Center, 1101 Carmichael Road, Hudson, WI 54016. Phone: (715) 386-4645 or (715) 386-4647. Payment information for St. Croix County Treasurer’s Office can be found at the following link: https://www.sccwi.gov/777/Paying-Property-Taxes