Washington County Property Tax Calculator
Locality estimate page for Washington County, Oregon. Use this county/locality rate for faster screening, then confirm parcel-specific details with your local tax authority.
County/Locality Effective Rate
0.84%
State Effective Rate
0.81%
Sample Annual Tax Difference
$128
Median Home Value (ACS)
$588,000
Median Annual Tax Bill (ACS)
$4,929
Owner-Occupied Households
143,230
The typical owner-occupied home in Washington County is valued at $588,000 with a median real estate tax bill of $4,929 per year — an effective rate of 0.84%. Both figures come from the same ACS release, so the ratio is an estimate rather than an aggregate of individual bills.
State Mortgage Context: Oregon
Some counties follow standard FHA limits while higher-cost counties may qualify for elevated FHA limits.
State Effective Tax Rate
0.81%
FHA 1-Unit Floor
$541,287
FHA 1-Unit Ceiling
$1,249,125
In Washington County, Oregon, the current county-level estimate is 0.84%, or approximately $3,360 annually on a $400,000 home.
How to Use This County Estimate
Step 1
Enter your property value and assessment assumptions.
Step 2
Apply exemptions that may reduce taxable value.
Step 3
Compare county/locality estimate against statewide fallback.
Washington County Property Tax Snapshot
Estimated effective rate: 0.84% · vs Oregon: 0.81% · vs national benchmark: 0.90%
| Home value | Estimated annual tax | Estimated monthly tax |
|---|---|---|
| $250,000 | $2,100 | $175 |
| $400,000 | $3,360 | $280 |
| $500,000 | $4,200 | $350 |
| $750,000 | $6,300 | $525 |
| $1,000,000 | $8,400 | $700 |
Compare Nearby Property Taxes
- Washington County0.84%
- Marion County0.84%
- Clackamas County0.85%
- Lane County0.82%
- Linn County0.87%
- Jackson County0.74%
- Yamhill County0.73%
Source Transparency
Source: U.S. Census Bureau, ACS 5-Year Estimates (B25103 / B25077)
View sourceLast updated: August 2026
Estimates only. Confirm parcel-specific amounts with the official local taxing authority.
Need Statewide Context?
Visit Oregon mortgage snapshot or return to the national calculator hub.