Whatcom County, WA Property Taxes (2026)

Whatcom County owners pay a median of $3,819 a year on a median home value of $536,100, an effective rate of 0.71%. That's the 30th-highest rate of 39 Washington counties with Census data, below 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

0.71%

30th highest of 39 in WA

Median annual bill

$3,819

~$318/month

Median home value

$536,100

Washington county median

0.79%

Effective rate

What a protest could save you in Whatcom County

Enter the market value from your appraisal notice. We apply Whatcom County's 0.71% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$3,806
Savings at 10–15% off
$381–$571
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Whatcom County vs. Washington vs. U.S. property tax rates

Whatcom County0.71%
Washington county median0.79%
U.S. county median0.84%

Key stat: Whatcom County's effective property tax rate is 0.71%, vs. 0.79% for the median Washington county and 0.84% for the median U.S. county. It ranks 30th 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 Whatcom County

  1. 1

    Review your assessment notice

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

  2. 2

    File your appeal before the deadline

    The Whatcom 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 $3,819 bill, 10–15% off is $382–$573 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 Whatcom 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 Whatcom County, Washington?
The median effective property tax rate in Whatcom County is 0.71%: a median annual bill of $3,819 on a median home value of $536,100. That's the 30th-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 Whatcom County?
The median Whatcom County property tax bill is $3,819 a year, about $318 a month, compared with a Washington county median of $2,860.
What is the deadline to appeal property taxes in Whatcom County?
The deadline to appeal in Whatcom County is July 1 or 60 days after notice. Missing it means waiting until the next assessment cycle.
Is Whatcom County a high property tax area?
Whatcom County's 0.71% effective rate is below the Washington county median of 0.79% and below the U.S. county median of 0.84%. That's the 30th-highest rate of 39 Washington counties with Census data.
Can TaxDrop help lower my Whatcom County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you appeal your assessment.

Property taxes in nearby counties

Skagit County

Rate: 0.82%

Median bill: $4,008

Snohomish County

Rate: 0.79%

Median bill: $5,121

Island County

Rate: 0.70%

Median bill: $3,765

San Juan County

Rate: 0.57%

Median bill: $4,131

Chelan County

Rate: 0.71%

Median bill: $3,235

Kitsap County

Rate: 0.80%

Median bill: $4,030

King County

Rate: 0.84%

Median bill: $6,785

Okanogan County

Rate: 0.77%

Median bill: $2,194

← All 39 Washington counties

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