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Byron, CA

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Byron is a census-designated place (CDP) in Contra Costa County, California, United States. The population was 1,277 at the 2010 census.

According to the United States Census Bureau, the CDP has a total area of 6.5 square miles (16.8 km²), all of it land. It is located 5.5 miles (9 km) southeast of Brentwood.

Byron's first post office opened in 1878. Byron is named after an employee of the railroad.

Nearby cities include Bethel Island, Antioch, Livermore, Tracy, Clayton.

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