San Ramon is a city in Contra Costa County, California, United States, located within the San Ramon Valley, and 34 miles east of San Francisco. San Ramon’s population was 84,605 per the 2020 census,making it the 4th largest city in Contra Costa County, behind Richmond, Concord and Antioch.

San Ramon is home to the headquarters of Chevron Corporation, Cooper Companies, the West Coast headquarters of AT&T, GE Digital, as well as the San Ramon Medical Center. Major annual events include the Art and Wind Festival on Memorial Day weekend and the Run for Education in October.

On April 24, 2001, San Ramon was designated a Tree City USA.

The lands now occupied by the City of San Ramon were formerly inhabited by Seunen people, an Ohlone/Costanoan group who built their homes near creeks. Sometime around 1797, they were taken by Mission San José for use as grazing land. In 1834, they were part of the Rancho San Ramon land grant to José María Amador.

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.

The topography of San Ramon is varied, featuring a mix of the rolling hills of the Diablo Range and the flatter basin of the San Ramon Valley. The city is predominantly urban and residential with many new housing developments; however, much of the land around the city’s perimeter regions remains undeveloped, and is covered by grasslands and oak tree orchards. During the drier months the grasses are golden, but with the precipitation of winter and spring, the grasses turn green.

San Ramon’s public schools are part of the San Ramon Valley Unified School District (SRVUSD), serving approximately 32,000 students. The city has 12 elementary schools and four middle schools. The high schools are California High School and Dougherty Valley High School. An alternative K–12 school is operated by the SRVUSD to support home-schooled students: Venture Independent Study School, along with Del Amigo High School which offers credit recovery courses on a flexible schedule. The district has two additional high schools outside San Ramon, including Monte Vista, and San Ramon Valley.

California High School was founded in 1973 and ranked 1049th best high school in the United States by Newsweek. Dougherty Valley High School was founded in 2007 and is ranked 42nd within California; it is ranked No. 158 in the national rankings and earned a gold medal.

Higher education
Diablo Valley College – San Ramon branch campus
University of San Francisco – San Ramon regional campus
UC Davis Graduate School of Management – the Bay Area working professional program