Wisconsin · FIPS 55131 · County seat: West Bend
Washington County, WI GIS & Parcel Viewer
Looking for lot lines or a parcel number in Washington County, WI? The quickest route is the Washington County WinGIS Xtreme viewer, the county parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Washington County parcel map ↗
Opens washingtoncowi.wgxtreme.com in a new tab. We link out and never embed or copy parcel data.
Washington County at a glance
| Official map | Washington County WinGIS Xtreme viewer |
|---|---|
| Type | County-run map |
| Website | washingtoncowi.wgxtreme.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | West Bend |
| Population | 138,168 (2023 Census Bureau estimate) |
| Land area | 431 sq mi |
| FIPS code | 55131 |
Where the parcel data comes from
Washington County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this map
- Press the button above. This county's viewer runs on WinGIS Xtreme; 17 counties in our directory use the same service.
- Find the search option and look up a property, or zoom in on the map.
- Click a lot to see its details.
- Check the toolbar for layers, measuring and printing.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
Washington County by the numbers
Census Bureau figures put Washington County at about 138,168 people (2023 estimate) on roughly 431 square miles of land, which is about 321 residents per square mile. Among Wisconsin's 72 counties, it is the 11th largest by population. The county seat is West Bend.
Counties next to Washington County
Parcels close to the edge of Washington County can fall in the next county over. Neighboring counties:
Before you rely on the lines
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.