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
Lyon County Treasurer
Phone
(712) 472-3704How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Lyon County Treasurer
In Person
Visit the Treasurer's office
Other Counties in Iowa
About Lyon County
Lyon County is the most northwestern county of the U.S. state of Iowa. As of the 2020 census, the population was 11,934. The county seat is Rock Rapids.
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.