THE PLACER COUNTY LAND BRIEF
Land in the
Northern Sierra Upper Montane Forests setting.
Placer County has 1,407.4 square miles of land in California. 10 mapped landscape regions meet across Placer County: Northern Sierra Upper Montane Forests, Northern Sierra Mid-Montane Forests, Northern Sierran Foothills, among others.
A high mountain block slopes west toward California's Central Valley and drops sharply on its eastern side. Granite landscapes, glacial basins and elevation-dependent conifer forests are prominent regional features.
Regional context: Sierra Nevada ↗ · Regional mapping across the county footprint
Where the landscape changes
Placer County intersects 10 mapped regional units. The largest mapped shares are:
- Northern Sierra Upper Montane Forests30.1%
- Northern Sierra Mid-Montane Forests18.5%
- Northern Sierran Foothills17.4%
- Central Sierra Lower Montane Forests12.9%
- Northern Terraces12.1%
Central California Foothills and Coastal Mountains in Placer County
Oak woodland, chaparral and grassland occupy foothills and low coastal mountains around the Central Valley. Narrow agricultural valleys interrupt this landscape of dry summers and wetter winters.
Read the regional source ↗Central California Valley in Placer County
The Sacramento and San Joaquin river systems occupy broad sediment-filled basins, with fans and terraces toward the valley margins. These nearly level landscapes contrast with California's surrounding hills and mountains.
Read the regional source ↗Finding your parcel within Placer County
The atlas lists 23 cities, towns, townships, and Census communities associated with Placer County, including Roseville, Sheridan, Lincoln. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Placer County by land and water
The Census records 94.8 square miles of water within Placer County, or 6.3% of its total area. That share is close to Placer County’s 6.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Placer County has 125.8 times the land area of nearby Foresthill CDP (11.2 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets El Dorado County, Nevada County, Sacramento County, Sutter County, Yuba County within California. A tract near one of these lines should be matched to the county identifier on its own records.

