San Ramon (Spanish: San Ramón; meaning Saint Raymond) is a city in Contra Costa County, California, United States. It is a suburban city of the San Francisco Bay Area, and lies in the San Ramon Valley. San Ramon’s population was 72,148 as of the 2010 U.S. Census, with an estimated population of 74,378 in 2012 making it 4th largest city in Contra Costa County, behind Richmond, Concord and Antioch.
San Ramon is located at
37°46′48″N 121°58′41″W / 37.78000°N 121.97806°W / 37.78000; -121.97806. It is adjacent to Danville, California, to the north and Dublin, California, to the south. Unincorporated county lands border San Ramon to the east and west. It is located around 500 feet (150 m) above sea level. Mount Diablo flanks the city to the northeast and is prominently visible from almost all parts of the city. The Las Trampas Regional Wilderness borders San Ramon’s extreme northwest, at the northern end of Bollinger Canyon. The smaller Bishop Ranch Regional Preserve straddles San Ramon’s western border, located approximately between Interstate 680 and the Alameda County line.