Diablo is a small suburban town located northeast of Danville, California and approximately 33 miles east of San Francisco. Diablo is located on the foot hills of Mount Diablo State park, and boasts amenities such as hiking and biking trails. Diablo’s main draw is its country club, which is considered one of the most desirable golf courses to play on in the San Francisco Bay Area. The country club is located amongst Diablo’s 1.4 square miles of primarily residential structures. Diablo is also home to the acclaimed Marshall Wine Company. Visitors can attend wine tasting events or receive wine education from practiced wine educator and founder, Elaine Marshall.

Population: 1,083
Housing Units: 372
Source: US Census Bureau 2010 Census

Key Community Statistics
Selected Social Characteristics
Selected Economic Characteristics
Selected Housing Characteristics
Source: 2009-2013 American Community Survey

Local Services
Local Government
Board of Supervisor – Supervisor Mary Nejedly Piepho
Phone: (925) 252-4500

Municipal Advisory Council
Phone: (925) 252-4500


Fire and Safety
Contra Costa County Sheriff’s Dispatcher
Non-emergency Phone: (925) 646-2441
Website San Ramon Valley Fire Protection District
Non-emergency Phone: (925) 838-6640

San Ramon Valley Unified School District
Phone:(925) 552-5500