Multnomah County, OR Property Tax: $5,061/yr (2026)
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The effective property tax rate in Multnomah County is 0.96% of assessed home value. On a home at the county median value of $528,000, that works out to about $5,069 per year, or $422 per month. Multnomah County is located in northern Oregon, with Portland as its county seat, and is home to approximately 803,863 residents.
About Multnomah County
Multnomah County covers approximately 431.0 square miles in Oregon. The county is home to about 803,863 residents living in roughly 367,704 housing units, of which 51.1% are owner-occupied. The median household income is $86,247, and the median home was built in 1971.
The county seat is Portland. Multnomah County borders Clackamas County, Columbia County, Hood River County, Washington County, Clark County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Oregon
Property taxes in Oregon 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 Oregon 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 Multnomah County Assessor's office to learn which exemptions apply to your property and when to file.
Multnomah County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Multnomah County, OR | 0.96% | $528,000 | $5,069 |
| Oregon state average | 0.78% | — | $4,118* |
| Clackamas County | 0.87% | $577,900 | $5,051 |
| Columbia County | 0.75% | $390,600 | $2,948 |
| Hood River County | 0.59% | $571,200 | $3,359 |
| Washington County | 0.87% | $558,500 | $4,852 |
| Clark County | 0.84% | $487,900 | $4,080 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Multnomah County's median home value of $528,000. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Multnomah County's property tax rate compare to the rest of Oregon?
At 0.96%, Multnomah County is higher than the Oregon state average of 0.78%. On a home at the county median of $528,000, that means about $5,069 per year — versus $4,118 at the state average rate, a difference of $951 per year. Compared to the national average of 1.10%, Multnomah County is below average.
What's a typical annual property tax bill in Multnomah County?
For a home at the county median value of $528,000, the annual property tax in Multnomah County is approximately $5,069 — or about $422 per month. For a home worth $792,000, expect around $7,603 per year. For a $1,056,000 home, approximately $10,138 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Multnomah County property tax assessment?
Property assessment appeals in Multnomah County are handled by the Multnomah County Assessor's office in Portland. 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 Multnomah County?
Oregon 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 0.96% shown here. Contact the Multnomah 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