Altamont, California

Altamont is an unincorporated community in Alameda [County, California|Alameda County], California. It is located northeast of Livermore, at an elevation of in the Altamont Pass. Originally called The Summit, the name was changed to Altamont when the Central [Pacific Railroad] arrived in 1869.

History

Altamont is derived from its former name Alta Monte. The community was also briefly known as The Summit.
A post office operated at Altamont from 1872 to 1955.