2026 Property Tax Due Dates
Installment 1
February 28
First half (or full by April 30)
Installment 2
June 15
Second half
Penalty: 1% per month after due dateGrace period: None
Payment Methods
Online, Mail, In-Person
Douglas County Treasurer
Treasurer
David Gill
Phone
(303) 660-7455How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Douglas County Treasurer
In Person
Visit the Treasurer's office — 100 Third Street, Castle Rock CO 80104
Other Counties in Colorado
About Douglas County
Douglas County is a county located in the U.S. state of Colorado. As of the 2020 Census, the population was 357,978. The county is named in honor of U.S. Senator Stephen A. Douglas.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you a fortnight 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.