2026 Property Tax Due Dates
Installment 1
September 30
First half
Installment 2
March 31
Second half
Penalty: 1.5% per monthGrace period: None
Payment Methods
Online, Mail, In-Person
Dubuque County Treasurer
Phone
(563) 589-4436How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Dubuque County Treasurer
In Person
Visit the Treasurer's office
Other Counties in Iowa
About Dubuque County
Dubuque County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 99,266, and was estimated to be 99,242 in 2024, making it the ninth-most populous county in Iowa. The county seat is Dubuque.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.