Lamorinda, which is located in Contra Costa County, is a name derived from the three cities that make up the area: Lafayette, Moraga, and Orinda. Considered part of East Bay San Francisco, Lamorinda sits east of the Berkeley Hills between the Caldecott Tunnel and west of Walnut Creek and Mt. Diablo, the 20,000 acre state park whose highest peak is 3,849 feet. It’s also known as the Highway 24 corridor as that state highway is the primary thoroughfare from the east into San Francisco. Many residents commute west through the tunnel to San Francisco and Oakland, and many more use the BART (Bay Area Rapid Transit) which parallels Highway 24. Lafayette and Orinda have BART stations while Moraga, located to the south, is more isolated with a pair of two-lane roads connecting it to Highway 24.
Each city has its own unique characteristics but all three share similarities as well. All are considered suburban communities with little industry. The public schools in each of the three cities are part of the Acalanes Union High School District, one of the highest ranked high school districts in California. As of 2017, the cities had a combined population of 58,475 with Lafayette having the largest population and Moraga the smallest.
With its restaurants and shops in its downtown, Lafayette is considered the retail center of the region. Orinda is home to the historic Orinda Threatre and the California Shakespeare Theater. And Moraga is home to St. Mary’s College of California.
Surrounding Lamorinda are the cities of Pleasant Hill and Concord to the north; Walnut Creek to the east; Oakland, Emeryville and Berkeley to the west; and Danville and the unincorporated area of Alamo to the south.