2026 Property Tax Due Dates
January 31
Full or first installment
July 31
Second installment
Payment Methods
Online, Mail, In-Person
Waukesha County Treasurer
Phone
(262) 548-7029Office Hours
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Waukesha County Treasurer
In Person
Visit the Treasurer's office — 515 W Moreland Blvd, AC148, Waukesha WI 53188, Mon-Fri 8am - 4:30pm
Other Counties in Wisconsin
About Waukesha County
Waukesha County is a county in the U.S. state of Wisconsin. As of the 2020 United States Census, the population was 406,978, making it the third-most populous county in Wisconsin. Its median income of $88,985 placed it as the only county in Wisconsin on the list of the 100 highest-income counties in the U.S. by median income as of 2020.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you 14 days before your property taxes are due.
Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.