Montana · FIPS 30063 · County seat: Missoula
Missoula County, MT GIS & Parcel Viewer
Looking for lot lines or a parcel number in Missoula County, MT? The quickest route is Missoula County Property Information System, 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 Missoula County parcel map ↗
Opens gis.missoulacounty.us in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Missoula County Property Information System |
|---|---|
| Type | County-run map |
| Website | gis.missoulacounty.us |
| Access | Free, no login (checked Oct 2026) |
| County seat | Missoula |
| Population | 121,849 (2023 Census Bureau estimate) |
| Land area | 2,593 sq mi |
| FIPS code | 30063 |
Who runs this map
Missoula County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. When we tested the link in October 2026 it opened with no login and no fee.
Finding a property on this map
- 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.
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.
About Missoula County
Missoula County had an estimated 121,849 residents in 2023, according to the Census Bureau. With about 2,593 square miles of land, that works out to roughly 47 people per square mile. By population it ranks 3rd of 56 counties in Montana. The county seat is Missoula.
Neighboring counties
Parcels close to the edge of Missoula County can fall in the next county over. Neighboring counties:
- Flathead County
- Granite County
- Lake County
- Mineral County
- Powell County
- Ravalli County
- Sanders County
- Clearwater County, ID
- Idaho County, ID
Related guides
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.