Washington County property tax
Oregon (OR) · West region · Census ACS 2019-2023 (ACS 2023 5-year)
The median property tax in Washington County, Oregon is $4,852 per year on a median home value of $558,500 — an effective property-tax rate of 0.87% (-19.5% versus the US average of 1.08%), close to the US average effective rate. That is about 4.65% of the county's median household income of $104,434. Washington County ranks #11 of 36 counties in Oregon and #1,492 of 3,133 nationally by effective rate (1 = highest).
Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates. Data as of June 2026.
Washington County property tax at a glance
| Figure | Washington County, OR |
|---|---|
| Median property tax (per year) | $4,852 |
| Median home value | $558,500 |
| Effective property-tax rate | 0.87% |
| Versus US average rate | -19.5% (US avg 1.08%) |
| Median household income | $104,434 |
| Property tax as % of income | 4.65% |
| Population | 600,266 |
| Rank in Oregon (1 = highest rate of 36) | #11 |
| National rank by rate (of 3,133) | #1,492 |
Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates. Data as of June 2026.
How Washington County compares
The counties with the closest effective property-tax rate to Washington County:
| County | Median tax/yr | Effective rate | vs US avg |
|---|---|---|---|
| Washington County, OR (this county) | $4,852 | 0.87% | -19.5% |
| Howard County, MO | $1,262 | 0.87% | -19.5% |
| Baker County, GA | $1,042 | 0.87% | -19.6% |
| Nez Perce County, ID | $2,529 | 0.87% | -19.6% |
| Montgomery County, MD | $5,341 | 0.87% | -19.6% |
| St. Mary's County, MD | $3,392 | 0.87% | -19.6% |
Other large counties in Oregon: Multnomah County (0.96%), Clackamas County (0.87%). See the Oregon property-tax page for the full county table.
Frequently asked questions
How much is property tax in Washington County, Oregon?
The median property-tax bill in Washington County, Oregon is $4,852 per year on a median home value of $558,500, an effective rate of 0.87% (Census ACS 2019-2023 (ACS 2023 5-year)). That is -19.5% versus the US average effective rate of 1.08%. Your own bill depends on your assessed value and local rate.
What is the effective property-tax rate in Washington County?
Washington County's effective property-tax rate is 0.87% of home value, calculated as the median tax ($4,852) divided by the median home value ($558,500). That ranks #11 of 36 counties in Oregon and #1,492 of 3,133 nationally (1 = highest).
Is property tax high in Washington County?
Washington County is around average on property tax at 0.87% effective rate, close to the US average effective rate. Property tax there is about 4.65% of the median household income of $104,434. These are ACS area medians; verify your situation with the county assessor.
How is the Washington County property-tax figure calculated?
It uses Census ACS 2023 5-year estimates: median real estate taxes paid (table B25103) and median home value (B25077) for owner-occupied homes in Washington County. The effective rate is the first divided by the second. It is an area median, not an official mill rate, and not your individual assessment.
Keep exploring
- Oregon property tax — state overview & county table (state effective rate 0.84%)
- Highest property-tax counties · Lowest property-tax counties
- Property-tax estimator · All counties
Source & accuracy
Figures are from the U.S. Census Bureau American Community Survey (2019-2023 (ACS 2023 5-year)), US public domain: median real estate taxes paid (B25103) and median home value (B25077) for owner-occupied homes. The effective rate is the ratio of the two. These are area medians, not your individual bill — your tax depends on your home's assessed value, exemptions and your local rate. Verify with the Washington County assessor or tax collector. Data as of June 2026. See our methodology and disclaimer.
Last updated: 2026-06-20