Washington County, OR property tax
Census ACS 2023 5-year estimates · updated 2026-09-20
The median effective property tax rate in Washington County is 0.87%, above the Oregon median of 0.83% and below the national median of 0.98%. The median homeowner pays $4,852 a year on a home worth $558,500.
- Effective rate
- 0.87%
- Median annual bill
- $4,852
- Median home value
- $558,500
- Rank in Oregon
- 11of 36
Estimated annual bill by home value
| Home value | Estimated bill | Per month |
|---|---|---|
| $200,000 | $1,740 | $145 |
| $300,000 | $2,610 | $218 |
| $400,000 | $3,480 | $290 |
| $500,000 | $4,350 | $363 |
| $750,000 | $6,525 | $544 |
| $1,000,000 | $8,700 | $725 |
Washington County compared with Oregon and the US
| Area | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Washington County | 0.87% | $4,852 | $558,500 |
| Oregon median | 0.83% | $3,767 | $454,200 |
| United States median | 0.98% | $2,969 | n/a |
Rates and medians: U.S. Census Bureau, ACS 2023 5-year estimates, tables B25103 and B25077. Effective rate is median taxes paid divided by median owner-occupied home value.
Frequently asked questions
What is the property tax rate in Washington County, OR?
The median effective property tax rate in Washington County is 0.87% of home value, above the Oregon median of 0.83% and below the national median of 0.98%. The median homeowner pays $4,852 a year on a median home value of $558,500 (Census ACS 2023 5-year).
How much is property tax on a $400,000 house in Washington County?
About $3,480 per year at the county's median effective rate of 0.87%, before exemptions. The exact bill depends on the city, school district and special districts that serve the parcel, so treat this as a planning estimate.
How does Washington County compare with the rest of Oregon?
Washington County ranks 11 of 36 Oregon counties by effective rate. The Oregon median is 0.83% and the median bill is $3,767.