Weston County, WY Property Tax: $1,460/yr (2026)
Last reviewed:
The effective property tax rate in Weston County is 0.68% of assessed home value. On a home at the county median value of $214,000, that works out to about $1,455 per year, or $121 per month. Weston County is located in eastern Wyoming, with Newcastle as its county seat, and is home to approximately 6,835 residents.
About Weston County
Weston County covers approximately 2,398.0 square miles in Wyoming. The county is home to about 6,835 residents living in roughly 3,417 housing units, of which 71.7% are owner-occupied. The median household income is $87,545, and the median home was built in 1976.
The county seat is Newcastle. Weston County borders Custer County, Lawrence County, Pennington County, Campbell County, Converse County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Wyoming
Property taxes in Wyoming are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Wyoming offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Weston County Assessor's office to learn which exemptions apply to your property and when to file.
Weston County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Weston County, WY | 0.68% | $214,000 | $1,455 |
| Wyoming state average | 0.56% | — | $1,198* |
| Custer County | 0.78% | $327,200 | $2,549 |
| Lawrence County | 0.86% | $310,800 | $2,671 |
| Pennington County | 1.13% | $270,400 | $3,049 |
| Campbell County | 0.55% | $266,400 | $1,465 |
| Converse County | 0.58% | $269,700 | $1,557 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Weston County's median home value of $214,000. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Weston County's property tax rate compare to the rest of Wyoming?
At 0.68%, Weston County is higher than the Wyoming state average of 0.56%. On a home at the county median of $214,000, that means about $1,455 per year — versus $1,198 at the state average rate, a difference of $257 per year. Compared to the national average of 1.10%, Weston County is below average.
What's a typical annual property tax bill in Weston County?
For a home at the county median value of $214,000, the annual property tax in Weston County is approximately $1,455 — or about $121 per month. For a home worth $321,000, expect around $2,183 per year. For a $428,000 home, approximately $2,910 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Weston County property tax assessment?
Property assessment appeals in Weston County are handled by the Weston County Assessor's office in Newcastle. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Weston County?
Wyoming counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 0.68% shown here. Contact the Weston County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File