Columbia County, WA Property Taxes (2026)

Columbia County owners pay a median of $2,215 a year on a median home value of $256,100, an effective rate of 0.86%. That's the 5th-highest rate of 39 Washington counties with Census data, above the Washington county median of 0.79%.

Updated October 2026 · Data: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023)

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Effective tax rate

0.86%

5th highest of 39 in WA

Median annual bill

$2,215

~$185/month

Median home value

$256,100

Washington county median

0.79%

Effective rate

What a protest could save you in Columbia County

Enter the market value from your appraisal notice. We apply Columbia County's 0.86% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$2,202
Savings at 10–15% off
$220–$330
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Columbia County vs. Washington vs. U.S. property tax rates

Columbia County0.86%
Washington county median0.79%
U.S. county median0.84%

Key stat: Columbia County's effective property tax rate is 0.86%, vs. 0.79% for the median Washington county and 0.84% for the median U.S. county. It ranks 5th of 39 in Washington. Effective rate = median tax bill ÷ median home value, so it already reflects typical exemptions. (Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023))

How to appeal your property taxes in Columbia County

  1. 1

    Review your assessment notice

    Check the assessed value from the Columbia County Assessor. Compare it to recent sales of similar homes nearby.

  2. 2

    File your appeal before the deadline

    The Columbia County deadline is July 1 or 60 days after notice. Missing it means waiting until the next assessment year.

  3. 3

    Gather evidence

    Recent comparable sales, photos of condition issues, repair estimates or an independent appraisal.

  4. 4

    Present your case

    Submit evidence or attend a hearing with the County Assessor.

  5. 5

    Get your decision

    If you win, your assessed value and bill go down. On a $2,215 bill, 10–15% off is $222–$332 a year.

Want help with it?

TaxDrop builds your case from comparable sales data.

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Property tax exemptions in Washington

Washington homeowners may qualify for exemptions that reduce taxable value. Check with the Columbia County Assessor for amounts.

Homestead exemption

For your primary residence. Reduces the value used to calculate your bill.

Senior / over-65

Many states add an exemption or freeze for owners 65 and older.

Disability

For homeowners with qualifying disabilities, often similar to the over-65 benefit.

Veterans

Disabled veterans may get partial or full exemptions depending on rating.

Frequently Asked Questions

What is the property tax rate in Columbia County, Washington?
The median effective property tax rate in Columbia County is 0.86%: a median annual bill of $2,215 on a median home value of $256,100. That's the 5th-highest rate of 39 Washington counties with Census data. Your own rate depends on which city, school district and special districts you're in. Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023).
How much are property taxes in Columbia County?
The median Columbia County property tax bill is $2,215 a year, about $185 a month, compared with a Washington county median of $2,860.
What is the deadline to appeal property taxes in Columbia County?
The deadline to appeal in Columbia County is July 1 or 60 days after notice. Missing it means waiting until the next assessment cycle.
Is Columbia County a high property tax area?
Columbia County's 0.86% effective rate is above the Washington county median of 0.79% and above the U.S. county median of 0.84%. That's the 5th-highest rate of 39 Washington counties with Census data.
Can TaxDrop help lower my Columbia County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you appeal your assessment.

Property taxes in nearby counties

Garfield County

Rate: 0.61%

Median bill: $1,306

Walla Walla County

Rate: 0.90%

Median bill: $3,386

Asotin County

Rate: 0.80%

Median bill: $2,289

Whitman County

Rate: 0.79%

Median bill: $2,566

Franklin County

Rate: 0.76%

Median bill: $2,638

Adams County

Rate: 0.84%

Median bill: $2,104

Benton County

Rate: 0.79%

Median bill: $2,910

Lincoln County

Rate: 0.60%

Median bill: $1,621

← All 39 Washington counties

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