THE LINN COUNTY LAND BRIEF
Land in the
Western Cascades Lowlands and Valleys setting.
Linn County has 2,289.5 square miles of land in Oregon. 7 mapped landscape regions meet across Linn County: Western Cascades Lowlands and Valleys, Western Cascades Montane Highlands, Prairie Terraces, among others.
Volcanic mountains, deeply cut stream valleys and glaciated high country define the Cascades. Conifer forests change with elevation, giving way to mountain meadows and rocky alpine terrain.
Regional context: Cascades ↗ · Regional mapping across the county footprint
Where the landscape changes
Linn County intersects 7 mapped regional units. The largest mapped shares are:
- Western Cascades Lowlands and Valleys27.7%
- Western Cascades Montane Highlands24.3%
- Prairie Terraces19.2%
- Valley Foothills13.3%
- Cascade Crest Montane Forest9.5%
Willamette Valley in Linn County
The Willamette River's floodplains and terraces sit among low hills and scattered buttes. The valley's prairie, oak and riparian landscape differs markedly from the conifer-covered mountains around it.
Read the regional source ↗Finding your parcel within Linn County
The atlas lists 24 cities, towns, townships, and Census communities associated with Linn County, including Albany, Lebanon, Sweet Home. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Linn County by land and water
The Census records 19.4 square miles of water within Linn County, or 0.8% of its total area. That share is close to Linn County’s 0.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Linn County has 456.2 times the land area of nearby Cascadia CDP (5.02 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Benton County, Deschutes County, Jefferson County, Lane County, Marion County, Polk County within Oregon. A tract near one of these lines should be matched to the county identifier on its own records.

