Property Taxes in Oakville, Washington
Median Oakville, Washington effective property tax rate: 0.87%, significantly lower than the national median of 1.02%, and lower than the Washington state median of 0.92%.
Median Oakville, Washington home value: $424,300
Median annual Oakville, Washington tax bill: $3,713, $1,313 higher than the national median property tax bill of $2,400.
How are property taxes in Lewis calculated?
Property taxes in Oakville, Washington 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 Oakville's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Oakville, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Oakville Property Tax Calculator Work?
Use this Oakville property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Oakville's median effective tax rate of 0.87% — based on actual property records in Lewis County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Oakville's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Oakville: rates are 0.87% in 98568, primarily due to differences in school district levies and local assessment districts. Oakville's median tax rate is lower than the state median tax rate of 0.92%, but the median tax bill of $3,713 is $1,313 higher than the state median bill.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Oakville.
About Oakville Property Taxes
About Property Taxes in Oakville, Lewis, Washington
Oakville's median effective property tax rate of 0.87% is lower than the Washington state median of 0.92% and lower than the national median of 1.02%. This rate reflects the Lewis County base levy combined with local school district levies and Local improvement districts (LIDs) that vary by subdivision throughout the city.
Property tax rates are not uniform across Oakville. Homeowners in the 98568 ZIP code carry a median effective rate of 0.87%, while those in the 98568 pay 0.87%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Lewis County. Understanding which part of Oakville you live in can make a meaningful difference to your annual tax bill.
Oakville homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the July 1, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Oakville, Lewis County, Washington
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Oakville's effective property tax rate to other cities in Washington and the median property tax rates in Washington and the U.S.
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 Oakville Tax Rate
0.87%
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 Lewis County Tax Rate
0.70%
Median Effective Washington Tax Rate
0.92%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Oakville, Lewis County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 98568 | 0.87% | 0.87% | 0.87% | 0.88% | 0.88% |
Source: Ownwell
Property Tax Assessment Values Across Oakville, Lewis County, Washington
When examining property taxes in Oakville, Washington, 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 Lewis County assessor 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 Lewis County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of October.
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 Oakville.
For example, the median home price in Oakville is $424,300, with tax bills ranging significantly across the county. 98568 has the highest median home price at $424,300.
Property Tax Assessment Values Across Oakville, Lewis County, Washington
Source: Ownwell
$112,400
$271,150
$429,900
Median Oakville Market Value
$424,300
Median Lewis County Market Value
$329,400
Median Washington Market Value
$501,600
Median United States Market Value
$274,101
Property Tax Assessment Values Across Oakville, Lewis County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 98568 | $262,980 | $344,000 | $424,300 | $511,000 | $569,220 |
Source: Ownwell
Property Tax Bills Across Oakville, Lewis County, Washington
Property tax bills in Oakville are calculated by applying local tax rates to a home’s assessed value, which is based on the market value of the property. For homeowners, that means the bill depends on both what the home is worth and the tax rate set by local taxing authorities in Lewis County.
With a median home price of $424,300, property taxes can be a significant part of ownership costs. The median tax bill in the area is $3,713, which is higher than the national median property tax bill of $2,400 and above the national median property tax rate of 1.02%. Bills also vary across homes, with the 25th percentile at $3,016, the 75th percentile at $4,445, and the 90th percentile at $4,958.
These differences show how assessed value and local rates can affect what homeowners pay each year.
Median Oakville Tax Bill
$3,713
Median Lewis County Tax Bill
$2,244
Median Washington Tax Bill
$4,512
Median United States Tax Bill
$3,209
Property Tax Bills Across Oakville, Lewis County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 98568 | $2,313 | $3,016 | $3,713 | $4,445 | $4,958 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | July 1 |
| Tax Bill | |
| Issued | February 10 |
| Due Date #1 | April 30 |
| Due Date #2 | October 31 |
Links | |
|---|---|
| Lewis Tax Assessor | |
| Website | parcels.lewiscountywa.gov |