THE GRANITE COUNTY LAND BRIEF
Land in the
Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains setting.
Granite County has 1,727.2 square miles of land in Montana. 6 mapped landscape regions meet across Granite County: Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains, Flint Creek-Anaconda Mountains, Deer Lodge-Philipsburg-Avon Grassy Intermontane Hills and Valleys, among others.
Forested mountain ranges rise above grassy or shrubby intermountain valleys. The Middle Rockies combine alpine high country, partly wooded foothills and valleys supplied by mountain streams.
Regional context: Middle Rockies ↗ · Regional mapping across the county footprint
Where the landscape changes
Granite County intersects 6 mapped regional units. The largest mapped shares are:
- Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains37.3%
- Flint Creek-Anaconda Mountains30.4%
- Deer Lodge-Philipsburg-Avon Grassy Intermontane Hills and Valleys20.5%
- Southern Garnet Sedimentary-Volcanic Mountains6.1%
- Eastern Batholith4.7%
Idaho Batholith in Granite County
A deeply cut mountainous plateau forms the Idaho Batholith. Granitic terrain supports conifer forests, while deep canyons introduce warmer settings with pine, shrubs and grasses.
Read the regional source ↗Finding your parcel within Granite County
The atlas lists 4 cities, towns, townships, and Census communities associated with Granite County, including Maxville, Philipsburg, Drummond. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Granite County by land and water
The Census records 5.62 square miles of water within Granite County, or 0.3% of its total area. That share is close to Granite County’s 0.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Granite County has 2,032 times the land area of nearby Philipsburg town (0.85 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Deer Lodge County, Missoula County, Powell County, Ravalli County within Montana. A tract near one of these lines should be matched to the county identifier on its own records.

