THE SAN JUAN COUNTY LAND BRIEF
Land in the
Alpine Zone setting.
San Juan County has 387.5 square miles of land in Colorado. 4 mapped landscape regions meet across San Juan County: Alpine Zone, Crystalline Subalpine Forests, Volcanic Subalpine Forests, among others.
Steep mountains rise through distinct vegetation bands, from lower grass and shrub country to conifers and alpine terrain. Elevation is a defining difference across Southern Rocky Mountain landscapes.
Regional context: Southern Rockies ↗ · Regional mapping across the county footprint
Where the landscape changes
San Juan County intersects 4 mapped regional units. The largest mapped shares are:
- Alpine Zone62.7%
- Crystalline Subalpine Forests15.4%
- Volcanic Subalpine Forests11.7%
- Sedimentary Subalpine Forests10.2%
Finding your parcel within San Juan County
The atlas lists 1 cities, towns, townships, and Census communities associated with San Juan County, including Silverton. The list includes overlapping geography types and does not divide the county into exclusive service areas.
San Juan County by land and water
The Census records 0.79 square miles of water within San Juan County, or 0.2% of its total area. That share is close to San Juan County’s 0.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, San Juan County has 464.1 times the land area of nearby Silverton town (0.84 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Dolores County, Hinsdale County, La Plata County, Montezuma County, Ouray County, San Miguel County within Colorado. A tract near one of these lines should be matched to the county identifier on its own records.

