2026 Property Tax Due Dates
County-specificNovember 10
First half payment due (or pay in full by Dec 31)
Delinquent after: November 11
May 10
Second half payment due (following year)
Delinquent after: May 11
Weston County Treasurer
Treasurer
Susie Overman
Phone
307-746-2852Fax
307-746-9505
Mailing Address
1 West Main
Newcastle, WY 82701
Office Hours
How to Pay
Online
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By Mail
Mail check payable to Weston County Treasurer — 1 West Main, Newcastle WY 82701
In Person
Visit the Treasurer's office — 1 West Main, Newcastle WY 82701, Monday - Friday 8am - 4:30pm
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 Weston County
Weston County is a county in the U.S. state of Wyoming. As of the 2020 United States census, the population was 6,838. Its county seat is Newcastle. Its east boundary line abuts the western boundary of the state of South Dakota.
Source: Wikipedia — content available under CC BY-SA 4.0
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.