2026 Property Tax Due Dates
County-specificNovember 10
First half payment due
May 10
Second half payment due (following year)
Campbell County Treasurer
Treasurer
Rachael Knust
Phone
307-682-7268Fax
307-687-6416
Mailing Address
PO Box 1027
Gillette, WY 82717
Office Hours
How to Pay
Online
true
By Mail
Mail check payable to Campbell County Treasurer — PO Box 1027, Gillette WY 82717
In Person
Visit the Treasurer's office — 500 S. Gillette Ave, Suite 1700, Gillette WY 82716, Monday - Friday
About Property Taxes in Wyoming
Wyoming has among the lowest effective property tax rates in the United States. The state levies no income tax, but its abundant natural resource revenues (oil, gas, coal, minerals) reduce the burden on property taxpayers significantly. Property taxes are administered at the county level. Residential property is assessed at 9.5% of market value, while commercial property is assessed at 11.5%. Wyoming's combination of low assessment ratios and low mill rates typically results in effective tax rates well under 0.6% of market value for residential properties.
Payment & Assessment
Wyoming property taxes are paid in two equal installments: First half: Due November 10 Second half: Due May 10 of the following year A penalty of 1.5% per month applies to late payments. Most counties offer online payment through the county treasurer's website. Contact your county for payment options.
Statewide framework for Wyoming. Your county's specific rates and deadlines are shown above.
Other Counties in Wyoming
About Campbell County
Campbell County is a county in the U.S. state of Wyoming. As of the 2020 United States census, the population was 47,026, making it the third-most populous county in Wyoming. Its county seat is Gillette. Campbell County comprises the Gillette, WY Micropolitan Statistical Area.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Interested in Tax Sale Investing?
Many properties end up at auction when owners fall behind on taxes. These books cover how it works.
As an Amazon Associate, we earn from qualifying purchases.
Get Deadline Reminders
We'll email you 1,209,600 seconds 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.