California's 55th State Assembly district

California's 55th State Assembly district is one of 80 California State Assembly districts. It is currently represented by Democrat Isaac Bryan of Los Angeles.

District profile
The district straddles the intersection of three counties and several distinct regions. Centered on the Chino Hills, it includes the southeastern margins of the San Gabriel Valley as well as parts of the northern Santa Ana Valley. The district is relatively affluent and primarily suburban.

Los Angeles County – 1.7%
 * Diamond Bar
 * Industry – 6.4%
 * Ramona
 * Rowland Heights
 * Walnut
 * West Covina – 28.7%

Orange County – 7.3%
 * Brea
 * La Habra
 * Placentia
 * Yorba Linda

San Bernardino County – 3.7%
 * Chino Hills

List of assembly members
Due to redistricting, the 55th district has been moved around different parts of the state. The current iteration resulted from the 2011 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