|County||Contra Costa County|
|Elevation||203 ft (62 m)|
Oleum is an unincorporated community in Contra Costa County, California. It is located on the Southern Pacific Railroad 6 miles (10 km) east-southeast of Point Pinole, at an elevation of 203 feet (62 m). An oil refinery is located at Oleum, hence the name from "petroleum".
- U.S. Geological Survey Geographic Names Information System: Oleum, California
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Quill Driver Books. p. 675. ISBN 9781884995149.
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