About Byron CDP, California
Byron is a census-designated place (CDP) in Contra Costa County, California, United States. The population was 1,277 at the 2010 census.
Byron is located at 37°43′15″N 121°45′21″W (37.720917, -121.755857).
According to the United States Census Bureau, the CDP has a total area of 2.5 square miles (6.5 km2), all of it land.