Montana · FIPS 30039 · County seat: Philipsburg
Granite County, MT GIS & Parcel Viewer
Use this page to reach the official statewide parcel map for Granite County, Montana. The button below opens Montana Cadastral (Montana State Library) in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Granite County statewide map ↗
Opens svc.mt.gov in a new tab. We link out and never embed or copy parcel data.
Granite County at a glance
| Official map | Montana Cadastral (Montana State Library) |
|---|---|
| Type | Statewide map (covers all of Montana) |
| Website | svc.mt.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | Philipsburg |
| Population | 3,595 (2023 Census Bureau estimate) |
| Land area | 1,727 sq mi |
| FIPS code | 30039 |
Who runs this map
This is a statewide map, not a county site. Montana Cadastral (Montana State Library) covers parcels across Montana, and Granite County is one part of it. Statewide parcel layers are usually stitched together from county files, so the newest splits or sales may show up on the county's own records first. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this statewide map
- Open Montana Cadastral (Montana State Library) in a new tab and zoom to Granite County (around Philipsburg).
- Type a street address into the search box, or click directly on a parcel.
- Review the parcel attributes; field names vary by state.
- Confirm anything important with the county assessor, since the statewide layer is a compiled copy.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
About Granite County
Granite County had an estimated 3,595 residents in 2023, according to the Census Bureau. With about 1,727 square miles of land, that works out to roughly 2.1 people per square mile. That makes it number 40 out of 56 Montana counties by population. The county seat is Philipsburg.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Granite County:
Maps vs. surveys
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.