Diamond, Whitman County, Washington Property Taxes
Median Diamond, WA effective property tax rate: 1.48%, significantly higher than the national median of 1.02%, but lower than the Washington state median of 0.88%.
Median Diamond, WA home value: $110,637
Median annual Diamond, WA tax bill: $1,673, $727 lower than the national median property tax bill of $2,400.
How are property taxes in Whitman calculated?
Property taxes in Diamond, WA 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 Diamond’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Diamond, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
Diamond, Whitman County, Washington Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.48%
Estimate Property Tax Bill
$1,637
$1,519
Ownwell’s Diamond Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in Diamond with just two data points.
By entering your property's estimated assessed value, our calculator applies Diamond’s median effective tax rate to accurately estimate your property tax bill. Note that your property's assessed value — determined by your county — reflects any exemptions you may have, ensuring a precise calculation for your property tax obligations.
This insightful tool helps you understand potential tax liabilities and highlights how Ownwell can assist in reducing property taxes in Whitman County.
For those interested in more localized information, please scroll down to explore city-level trends!
Property Tax Rates Across Diamond, Whitman County, Washington
Local government entities set tax rates, which can vary widely within a state. 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 Diamond’s effective property tax rate to other cities in Washington and the median property tax rates in Washington and the U.S.
In Diamond, situated in Whitman County, the property tax rate is a significant factor for homeowners. Whitman County has a median property tax rate of 1.48%, which is notably higher than the national median of 1.02%. This higher rate reflects the county's budgetary needs and the value of properties within the area. Despite this, Diamond's property tax rate aligns closely with the state's average, offering a competitive edge compared to other regions. Understanding these rates is crucial for property owners seeking to manage their tax liabilities effectively.
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 Diamond Taxx Rate
1.48%
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 Whitman County Taxx Rate
1.48%
Median Effective Washington Tax Rate
0.88%
Median Effective United States Tax Rate
0.99%
Property Tax Rates Across Diamond, Whitman County, Washington
Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
99111 | 0.28% | 1.11% | 1.46% | 1.50% | 1.50% |
Source: Ownwell
Property Tax Assessment Values Across Diamond, Whitman County, Washington
When examining property taxes in Diamond, 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 Whitman County Assessor's Office 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.
In Whitman County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of May. 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 Diamond.
For example, the median home price in Diamond is $110,637, with tax bills ranging significantly across the county. Zip code 99111 has the highest median home price at $111,833.
Property Tax Assessment Values Across Diamond, Whitman County, Washington
Source: Ownwell

$6,300
$100,912
$195,523
Median Diamond Market Value
$110,637
Median Whitman County Market Value
$117,153
Median Washington Market Value
$482,000
Median United States Market Value
$244,900
Property Tax Assessment Values Across Diamond, Whitman County, Washington
Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
99111 | $29,734 | $62,268 | $111,833 | $163,857 | $321,122 |
Source: Ownwell
Property Tax Bills Across Diamond, Whitman County, Washington
Median Diamond Tax Bill
$1,673
Median Whitman County Tax Bill
$1,573
Median Washington Tax Bill
$4,284
Median United States Tax Bill
$2,690
Property Tax Bills Across Diamond, Whitman County, Washington
Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
99111 | $39 | $663 | $1,691 | $2,529 | $4,345 |
Source: Ownwell