Alma is a former unincorporated community and now a restricted site, the location of a work camp for the county Department of Corrections in Lane County, Oregon, United States. Alma is located on Siuslaw River Road near the Siuslaw River, west-southwest of Eugene. History Alma was named in 1886 for a local woman. A post office was established at Alma in 1888, and remained in operation until it was discontinued in 1933. References Unincorporated communities in Lane County, Oregon Unincorporated communities in Oregon