Washington County, WI property tax
Census ACS 2023 5-year estimates · updated 2026-09-20
The median effective property tax rate in Washington County is 1.20%, below the Wisconsin median of 1.51% and above the national median of 0.98%. The median homeowner pays $3,795 a year on a home worth $316,200.
- Effective rate
- 1.20%
- Median annual bill
- $3,795
- Median home value
- $316,200
- Rank in Wisconsin
- 62of 72
Estimated annual bill by home value
| Home value | Estimated bill | Per month |
|---|---|---|
| $200,000 | $2,400 | $200 |
| $300,000 | $3,600 | $300 |
| $400,000 | $4,800 | $400 |
| $500,000 | $6,000 | $500 |
| $750,000 | $9,000 | $750 |
| $1,000,000 | $12,000 | $1,000 |
Washington County compared with Wisconsin and the US
| Area | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Washington County | 1.20% | $3,795 | $316,200 |
| Wisconsin median | 1.51% | $3,746 | $247,400 |
| 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, WI?
The median effective property tax rate in Washington County is 1.20% of home value, below the Wisconsin median of 1.51% and above the national median of 0.98%. The median homeowner pays $3,795 a year on a median home value of $316,200 (Census ACS 2023 5-year).
How much is property tax on a $400,000 house in Washington County?
About $4,800 per year at the county's median effective rate of 1.20%, 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 Wisconsin?
Washington County ranks 62 of 72 Wisconsin counties by effective rate. The Wisconsin median is 1.51% and the median bill is $3,746.