Property Tax & Income in Washington County, Wisconsin
Washington County has an effective property tax rate of 1.10%. On the median home value of $344,800, that's roughly $3,802 per year. Median household income is $96,359.
What you'll pay, at a glance
Property taxes are the largest local tax most homeowners pay. The effective rate measures the real tax bill as a share of home value — a more useful number than the nominal “mill rate,” because assessment practices vary county to county.
| Metric | Washington County | Wisconsin (state context) |
|---|---|---|
| Effective property tax rate1 | 1.10% | 1.36% |
| Median home value1 | $344,800 | — |
| State income tax3 | top rate 7.65% | top rate 7.65% |
| State sales tax3 | 5.72% combined | 5.72% combined |
How this is calculated
The effective property tax rate is the median real-estate tax bill divided by the median home value — both for owner-occupied homes, from the U.S. Census Bureau's American Community Survey (ACS 5-year estimates)1. Median income is also from the ACS1. Federal and state income-tax figures use IRS2 and Tax Foundation3 data.
About Washington County, WI
Washington County's effective property tax rate of 1.103% sits below Wisconsin's statewide median of 1.362%, placing it 62nd among the state's 72 counties. That ranking signals a comparatively favorable position within Wisconsin, though the gap with the national median of 0.794% runs the other way — this county's rate exceeds it. A median home value of $344,800 generates an annual real-estate tax bill of about $3,802. With median household income at $96,359 and per-capita income of $49,106, the tax load here looks different from what many Wisconsin counties see. Communities such as Germantown, Colgate, and Hubertus fall within these boundaries. Buyers weighing a move to this part of the state can expect property taxes that undercut the Wisconsin norm but run above what a nationwide comparison would show.