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Tri-Valley facts for kids

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Area of the East Bay
Tri-Valley Landscape
Tri-Valley Landscape
Tri-Valley location in CA
Tri-Valley location in California
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 • Total 361,000
Time zone Pacific Time Zone

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, San Ramon Valley, and Livermore Valley. The Tri-Valley encompasses the cities of Dublin, Livermore, Pleasanton and San Ramon, the town of Danville and the CDPs of Alamo, Blackhawk and Diablo. The area is known for its Mediterranean climate, wineries, and nature. It is a primarily suburban area with a population of about 361,000. It offers more affordable living accommodations than the cities of San Francisco and San Jose.


The Tri-Valley is serviced by WHEELS, operated by LAVTA, formerly called Tri-Valley Transit, a bus agency that operates local bus service in addition to feeder service to Hacienda Business Park, Lawrence Livermore National Laboratory, Las Positas College, Stoneridge Mall, and Dublin/Pleasanton BART station.

Two major highways, Interstates 580 and 680 cross the Tri-Valley area. Interstate 580 runs east-west, connecting the area to the Central Valley to the east and the North Bay area to the west. Interstate 680 runs north-south, connecting the area to the South Bay area in the south, and the Concord-Walnut Creek area in the north. The two interstates cross on the border of Dublin and Pleasanton.

The Tri-Valley area is also serviced by BART, offering service to the rest of the San Francisco Bay Area via two stops: West Dublin/Pleasanton and the Dublin/Pleasanton terminus station. The West Dublin/Pleasanton Station opened in 2011, and was the first infill station on an existing line. In 2018, BART cancelled plans to extend the line to Livermore. However, the Tri-Valley San Joaquin Valley Regional Rail Authority is in the planning process for a rail connection between BART, ACE, and the San Joaquin Valley.


The Tri-Valley is home to the corporate headquarters of many companies, including 24 Hour Fitness, Architectural Glass and Aluminum, Bay Area News Group, Blackhawk Network Holdings, CallidusCloud, Chevron, The Cooper Companies, Discovery Toys, Ellie Mae, GE Digital, Gillig Corporation, Patelco Credit Union, Prosoft Engineering, Ross Stores, SafeAmerica Credit Union, Safeway, Shaklee, TriNet, Veeva Systems, Visioneer, WANdisco, The Wine Group, Product10x Accelerator and Workday.

Major employment centers include Bishop Ranch and Hacienda Business Park.

Lawrence Livermore National Laboratory and Sandia National Laboratories are also major employers in the region.

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