San Ramon is an affluent city in Contra Costa County, California, United States. It is a suburban city 34 miles east of San Francisco, and lies in the San Ramon Valley. San Ramon's population was estimated to be 76,134 in the 2015 US Census, making it 4th largest city in Contra Costa County, behind Richmond, Concord and Antioch.
San Ramon was ranked the richest city in the nation with nearly two-thirds of its populace earning over $100,000 in 2013. 25% of households make $200,000 or more, per year. There are only 16 cities in the nation where more than 50% of its populace earn over $100,000 a year. In 2016, San Ramon was ranked the #1 safest large city with a population over 60K, in California.
San Ramon is home to the headquarters of the Chevron Corporation, 24-Hour Fitness, the West Coast headquarters of AT&T Inc., The Global Software Center of GE, as well as the San Ramon Medical Center. Major annual events include the Art and Wind Festival on Memorial Day weekend and the Primo's Run for Education in October.
On April 24, 2001, San Ramon received the title Tree City USA.