|— Unincorporated community —|
|Elevation||16 ft (5 m)|
Baumberg (formerly, Arff Station, Baumberg Station, and Arff) is an unincorporated community in Alameda County, California, adjacent to Hayward. It is located on the Southern Pacific Railroad 7 miles (11 km) north-northwest of downtown Newark, at an elevation of 16 feet (4.9 m).
The original name of the place was Arff, which was bestowed in 1877 by the South Pacific Coast Railroad for Frederic Danieh Arff who settled here in 1856. Southern Pacific changed the name to Baumberg (from Baumberger's Salt Works) when it bought out South Pacific Coast in 1887.
- "Baumberg". Geographic Names Information System, U.S. Geological Survey.
- All "Baumberg". Geographic Names Information System, U.S. Geological Survey.
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Quill Driver Books. p. 599. ISBN 9781884995149.
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