Minnesota · FIPS 27083 · County seat: Marshall
Lyon County, MN GIS & Parcel Viewer
Use this page to reach the official county parcel map for Lyon County, Minnesota. The button below opens Lyon County Basic Web Mapping Application in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Lyon County parcel map ↗
Opens lyonmn.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Lyon County at a glance
| Official map | Lyon County Basic Web Mapping Application |
|---|---|
| Type | County-run map |
| Website | lyonmn.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Marshall |
| Population | 25,427 (2023 Census Bureau estimate) |
| Land area | 714 sq mi |
| FIPS code | 27083 |
Where the parcel data comes from
It is a county-level map: Lyon County or the company it hires keeps the parcel layer up to date. Our October 2026 check found the map open to the public, with no account or payment needed.
Searching for a parcel, step by step
- Open the official link. The viewer is built with ArcGIS Web AppBuilder; if a disclaimer pops up, accept it to continue.
- Use the search widget, usually in the upper left, to find a street address or parcel ID.
- Click a parcel to open its info window.
- The widget bar holds extras such as the layer list, basemap switcher, measure and print tools.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
Lyon County by the numbers
Census Bureau figures put Lyon County at about 25,427 people (2023 estimate) on roughly 714 square miles of land, which is about 36 residents per square mile. That makes it number 42 out of 87 Minnesota counties by population. The county seat is Marshall.
Nearby parcel maps
Parcels close to the edge of Lyon County can fall in the next county over. Neighboring counties:
- Lincoln County (state list)
- Murray County
- Pipestone County (state list)
- Redwood County
- Yellow Medicine County
A note on accuracy
Treat the map as a guide, not a boundary survey: parcel outlines are often shifted a bit from the real corners. A licensed surveyor settles exact lines.