Avon, Contra Costa County, California

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Unincorporated community
Avon is located in California
Location in California
Coordinates: 38°01′58″N 122°04′31″W / 38.03278°N 122.07528°W / 38.03278; -122.07528
Country United States
State California
County Contra Costa County
Elevation[1] 10 ft (3 m)
GNIS ID[1][2] 252620
FIPS code[1][2] 06-03358

Avon,[1] formerly known as Associated and Marsh,[3] is an unincorporated community in Contra Costa County, California, United States.[1] It is located on the Southern Pacific Railroad 3.5 miles (5.6 km) east-northeast of Martinez,[3] at an elevation of 10 feet (3 m).[1]

A post office operated at Avon from 1912 to 1960.[3] It was originally called Marsh, and in 1913 the name was changed to Associated.[3] The name Marsh was in honor of John Marsh.[3] The name Associated was for the Tidewater Associated Oil Company, owner of the site.[3]


  1. ^ a b c d e f "Avon (Contra Costa County, California)". Geographic Names Information System. United States Geological Survey. Retrieved May 10, 2014. 
  2. ^ a b "FIPS55 Data: California". FIPS55 Data. United States Geological Survey. February 23, 2006. Archived from the original on June 18, 2006. Retrieved May 10, 2014.  External link in |work= (help)
  3. ^ a b c d e f Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, Calif.: Word Dancer Press. p. 597. ISBN 1-884995-14-4.