Cascadia is an unincorporated community and census-designated place (CDP) that was established in 1892 on the South Santiam River, 14 mi east of the current city of Sweet Home, in Linn County, Oregon, United States. As of the 2010 census it had a population of 147. Originally a stage stop on the Santiam Wagon Road, then a summer resort also known as Cascadia Mineral Springs, Cascadia had a post office established in 1898. It maintains a ZIP code of 97329. The resort had a hotel established by George Geisendorfer, who was also the first postmaster. People were attracted to Cascadia because of its mineral spring water. The property was sold to the state in 1940 and now is the site of the 300 acre Cascadia State Park.

Climate

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 F According to the Köppen Climate Classification system, Cascadia has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.

Demographics

Transportation

U.S. Route 20 passes through the community, leading west 14 mi to Sweet Home and 43 mi to Albany, and east over Tombstone Pass 81 mi to Bend.