Tri-Valley

For other uses, see Tri-Valley (disambiguation).

Tri-Valley
Area of the East Bay
Tri-Valley Landscape
Tri-Valley location in California
Tri-Valley Location in the United States
Coordinates: 37°39′45″N 121°52′29″W
Population
• Total	401,072
Time zone	UTC-8 (Pacific Time Zone)
• Summer (DST)	UTC-7 (PDT)

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The Tri-Valley area is grouping of three valleys in the East Bay region of California's Bay Area. The three valleys are Amador Valley, Livermore Valley, and San Ramon Valley. The Tri-Valley encompasses the cities of Dublin, Livermore, Pleasanton and San Ramon, the town of Danville, and the CDPs of Alamo, Blackhawk, Camino Tassajara, Diablo, and Norris Canyon. The area is known for its Mediterranean climate, wineries, and nature. It is primarily suburban in character. The total population of the Tri-Valley was 401,072 at the 2020 U.S. Census. It offers more affordable living accommodations than the cities of San Francisco and San Jose.