Wisconsin · FIPS 55039 · County seat: Fond du Lac
Fond du Lac County, WI GIS & Parcel Viewer
Fond du Lac County, Wisconsin parcel data lives on the Fond du Lac County parcel map. Open it below in a new tab, then use the short steps on this page to find a property fast.
Open the Fond du Lac County parcel map ↗
Opens gisweb.fdlco.wi.gov in a new tab. We link out and never embed or copy parcel data.
Fond du Lac County at a glance
| Official map | Fond du Lac County parcel map |
|---|---|
| Type | County-run map |
| Website | gisweb.fdlco.wi.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | Fond du Lac |
| Population | 103,948 (2023 Census Bureau estimate) |
| Land area | 720 sq mi |
| FIPS code | 55039 |
Who runs this map
It is a county-level map: Fond du Lac County or the company it hires keeps the parcel layer up to date. When we tested the link in October 2026 it opened with no login and no fee.
How to use the Fond du Lac County viewer
- Press the button above to open the county's own web map.
- Search for the property or pan and zoom to it.
- Click the lot to bring up what the county publishes about it.
- Look for print or measure tools if you need a quick map or rough size.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
The county in brief
The U.S. Census Bureau estimated Fond du Lac County's population at 103,948 in 2023, spread over about 720 square miles of land, or roughly 144 people per square mile. That makes it number 16 out of 72 Wisconsin counties by population. The county seat is Fond du Lac.
Nearby parcel maps
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Fond du Lac County:
- Calumet County
- Dodge County
- Green Lake County (state list)
- Sheboygan County
- Washington County
- Winnebago County
Before you rely on the lines
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.