California's 15th State Assembly district

California's 15th State Assembly district is one of 80 California State Assembly districts. It is currently represented by Democrat Tim Grayson of Concord.

District profile
The district encompasses the northern coastal East Bay from Martinez to Brentwood. The district is centered on Concord and Antioch.

Contra Costa County – 43.86%
 * Antioch
 * Brentwood
 * Clayton
 * Concord
 * Martinez
 * Pittsburg
 * Pleasant Hill
 * Walnut Creek – 0.5%

List of assembly members
Due to redistricting, the 15th district has been moved around different parts of the state. The current iteration resulted from the 2021 redistricting by the California Citizens Redistricting Commission.

Election results (1992–present)
1992 · 1994 · 1996 · 1998 · 2000 · 2002 · 2004 · 2006 · 2008 · 2010 · 2012 · 2014 · 2016 · 2018 · 2020