Sweetwater County, Wyoming Property Taxes

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Property Taxes in Sweetwater County, Wyoming

Median Sweetwater County effective property tax rate: 0.69%, significantly lower than the national median of 1.02%.
Median Sweetwater County home value: $208,609
Median annual Sweetwater County tax bill: $1,371, lower than the national median property tax bill of $2,400.

How are property taxes in Sweetwater County calculated?

Property taxes in Sweetwater County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Sweetwater County or another part of Sweetwater County, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Sweetwater County, Wyoming Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

0.69%

Estimate Property Tax Bill

$1,439

$1,336

How Does the Sweetwater County Property Tax Calculator Work?

Use this Sweetwater County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Sweetwater County's median effective tax rate of 0.69% to generate your estimate.

Enter your property's estimated assessed value — the figure the appraisal district assigns for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone. Sweetwater County's median effective tax rate is lower than the national median property tax rate of 1.02% and slightly higher than the Wyoming median tax rate of 0.65%.

Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property. Sweetwater County's median property tax bill of $1,371 is lower than the national median property tax bill of $2,400 and $1,029 lower than the state median.

For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Sweetwater County.

Property Tax Rates Across Sweetwater County, Wyoming

What Are Effective Property Tax Rates Across Sweetwater County?

Local government entities set tax rates, which vary widely across Sweetwater County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.

Below, compare Sweetwater County's effective property tax rate to other counties in Wyoming or the U.S. median of 1.02%.

Sweetwater County's median effective rate stands at 0.69%, which is lower than the national median of 1.02%. Within Sweetwater County, the highest rate is found in BAIROIL at 0.77%, while MC KINNON has the lowest at 0.63%.

These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.

Property Tax Rates Across Sweetwater County, Wyoming

Source: Ownwell

0.63%

0.70%

0.77%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Sweetwater County Tax Rate

0.69%

Median Effective Wyoming Tax Rate

0.65%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Sweetwater County, Wyoming

City	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
Bairoil	0.73%	0.74%	0.77%	0.77%	0.79%
Farson	0.71%	0.72%	0.77%	0.77%	0.77%
Granger	0.60%	0.63%	0.67%	0.70%	0.70%
Green River	0.63%	0.67%	0.70%	0.70%	0.72%
Mc Kinnon	0.60%	0.60%	0.63%	0.63%	0.65%
Reliance	0.69%	0.73%	0.73%	0.73%	0.74%
Rock Springs	0.61%	0.65%	0.68%	0.70%	0.72%
Superior	0.65%	0.67%	0.70%	0.70%	0.70%
Wamsutter	0.61%	0.68%	0.69%	0.73%	0.75%
Point Of Rocks	N/A	N/A	N/A	N/A	N/A
Pt Of Rocks	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Assessment Values Across Sweetwater County, Wyoming

When examining property taxes in Sweetwater County, understanding the distinction between "market value" and "assessed value" is crucial.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Sweetwater County property tax authority estimates the market value for tax purposes.

The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

Assessment notices:

In Sweetwater County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of April.

Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Sweetwater County.

For example, the median tax bill in Sweetwater County is $1,371, with tax bills ranging significantly across the county. Green River has the highest median home price at $241,102.

Property Tax Assessment Values Across Sweetwater County, Wyoming

Source: Ownwell

$13,417

$127,245

$241,072

Median Sweetwater County Market Value

$208,609

Median Wyoming Market Value

$260,753

Median United States Market Value

$235,294

Property Tax Assessment Values Across Sweetwater County, Wyoming

City	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
Bairoil	$2,899	$5,328	$13,417	$26,624	$49,492
Farson	$8,490	$16,906	$97,252	$276,598	$426,725
Granger	$6,101	$8,169	$13,859	$61,396	$128,724
Green River	$12,688	$129,484	$241,102	$301,300	$383,350
Mc Kinnon	$6,338	$14,725	$28,763	$108,072	$218,059
Reliance	$9,661	$25,932	$91,545	$126,352	$161,127
Rock Springs	$9,721	$59,702	$207,351	$300,988	$417,781
Superior	$4,796	$8,404	$19,069	$45,523	$85,822
Wamsutter	$7,414	$8,603	$15,101	$36,878	$112,172
Point Of Rocks	N/A	N/A	N/A	N/A	N/A
Pt Of Rocks	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Bills Across Sweetwater County, Wyoming

Property tax bills in Sweetwater County are based on the assessed value of a home and the local tax rate applied to that value. When a property’s market value changes, the assessed value can change too, which affects the final bill homeowners receive. Local taxing authorities use that assessment to determine how much property tax is owed each year.

The county’s median home price is $208,609, and property tax bills vary widely across homeowners. The 25th percentile tax bill is $327, while the 75th percentile is $2,015 and the 90th percentile reaches $2,728. That spread shows how much property taxes can differ depending on a home’s value and location within the county. Green River has the highest median tax bill at $1,639, while Superior has the lowest at $124. For homeowners, this means property taxes can have a meaningful impact on annual housing costs, especially when assessed values rise faster than expected.

Property Tax Bills Across Sweetwater County, Wyoming

Source: Ownwell

$91

$865

$1,639

Median Sweetwater County Tax Bill

$1,371

Median Wyoming Tax Bill

$1,712

Median United States Tax Bill

$2,400

Property Tax Bills Across Sweetwater County, Wyoming

City	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
Bairoil	$22	$41	$100	$188	$367
Farson	$60	$122	$683	$2,072	$3,147
Granger	$43	$53	$91	$389	$814
Green River	$87	$859	$1,639	$2,059	$2,653
Mc Kinnon	$38	$92	$191	$661	$1,578
Reliance	$67	$188	$678	$909	$1,164
Rock Springs	$64	$404	$1,360	$2,053	$2,811
Superior	$30	$56	$124	$312	$560
Wamsutter	$49	$56	$92	$270	$805
Point Of Rocks	N/A	N/A	N/A	N/A	N/A
Pt Of Rocks	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	May 27

Links
Sweetwater Tax Assessor
Website	www.sweetwatercountywy.gov

Frequently Asked Property Tax Questions in Sweetwater County, Wyoming

How are property taxes calculated in Sweetwater County, Wyoming?

Property taxes in Sweetwater County, Wyoming are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Sweetwater County, Wyoming?

To appeal your property taxes in Sweetwater County, Wyoming, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Sweetwater County, Wyoming?

Common property tax exemptions in Sweetwater County, Wyoming include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Sweetwater County, Wyoming?

Property tax deadlines in Sweetwater County, Wyoming vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Sweetwater County, Wyoming?

Ownwell provides professional property tax appeal services in Sweetwater County, Wyoming. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.