Clark County, WA Property Tax: $4,080/yr (2026)
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The effective property tax rate in Clark County is 0.84% of assessed home value. On a home at the county median value of $487,900, that works out to about $4,098 per year, or $342 per month. Clark County is located in southern Washington, and is home to approximately 510,516 residents.
About Clark County
Clark County covers approximately 628.5 square miles in Washington. The county is home to about 510,516 residents living in roughly 201,114 housing units, of which 63.7% are owner-occupied. The median household income is $94,948, and the median home was built in 1993.
Clark County borders Columbia County, Multnomah County, Cowlitz County, Skamania County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Washington
Property taxes in Washington are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Washington offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Clark County Assessor's office to learn which exemptions apply to your property and when to file.
Clark County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Clark County, WA | 0.84% | $487,900 | $4,098 |
| Washington state average | 0.76% | — | $3,708* |
| Columbia County | 0.75% | $390,600 | $2,948 |
| Multnomah County | 0.96% | $528,000 | $5,061 |
| Cowlitz County | 0.81% | $367,400 | $2,988 |
| Skamania County | 0.72% | $472,600 | $3,380 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Clark County's median home value of $487,900. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Clark County's property tax rate compare to the rest of Washington?
At 0.84%, Clark County is higher than the Washington state average of 0.76%. On a home at the county median of $487,900, that means about $4,098 per year — versus $3,708 at the state average rate, a difference of $390 per year. Compared to the national average of 1.10%, Clark County is below average.
What's a typical annual property tax bill in Clark County?
For a home at the county median value of $487,900, the annual property tax in Clark County is approximately $4,098 — or about $342 per month. For a home worth $731,850, expect around $6,148 per year. For a $975,800 home, approximately $8,197 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Clark County property tax assessment?
Property assessment appeals in Clark County are handled by the Clark County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Clark County?
Washington counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 0.84% shown here. Contact the Clark County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File