Avon, Contra Costa County, California
|— Unincorporated community —|
|County||Contra Costa County|
|Elevation||10 ft (3 m)|
Avon (formerly, Associated and Marsh) is an unincorporated community in Contra Costa County, California. It is located on the Southern Pacific Railroad 3.5 miles (5.6 km) east-northeast of Martinez, at an elevation of 10 feet (3 m).
A post office operated at Avon from 1912 to 1960. It was originally called Marsh, and in 1913 the name was changed to Associated. The name Marsh was in honor of John Marsh. The name Associated was for the Tidewater Associated Oil Company, owner of the site.
- U.S. Geological Survey Geographic Names Information System: Avon, Contra Costa County, California
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Quill Driver Books. p. 597. ISBN 9781884995149.
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