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
Calhoun County Treasurer
Phone
(712) 297-7111How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Calhoun County Treasurer
In Person
Visit the Treasurer's office
Other Counties in Iowa
About Calhoun County
Calhoun County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 9,927, and was estimated to be 9,711 in 2024. The county seat and largest city is Rockwell City.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
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We'll email you 336 hours 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.