| District: | 55 |
| Chamber: | Assembly |
| Population: | 461,696[1] |
| Population Year: | 2010 |
| Voting Age: | 351,337 |
| Citizen Voting Age: | 287,325 |
| Percent White: | 34.05 |
| Percent Black: | 2.68 |
| Percent Latino: | 29.99 |
| Percent Asian: | 31.91 |
| Percent Native American: | 0.37 |
| Percent Pacific Islander: | 0.18 |
| Percent Other Race: | 0.25 |
| Percent Remainder Of Multiracial: | 0.57 |
| Registered: | 266,506[2] |
| Democratic: | 35.16 |
| Republican: | 33.98 |
| Npp: | 26.10 |
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.
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%
Orange County – 7.3%
San Bernardino County – 3.7%
| Year | Office | Results |
|---|---|---|
| 2021 | Recall | align="right" Yes 53.3 – 46.7% |
| 2020 | President | Biden 52.8 – 45.4% |
| 2018 | Governor[3] | Cox 52.1 – 47.9% |
| Senator[4] | Feinstein 55.9 – 44.1% | |
| 2016 | President | Clinton 49.9 – 44.6% |
| Senator | Harris 55.3 – 44.7% | |
| 2014 | Governor | Kashkari 57.2 – 42.8% |
| 2012 | President | Romney 52.2 – 45.8% |
| Senator | Emken 52.2 – 47.8% |
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.
| Assembly members | Party | Years served | Counties represented | Notes |
|---|---|---|---|---|
| William H. Jordan | Republican | January 5, 1885 - January 7, 1889 | Alameda | |
| Melvin C. Chapman | January 7, 1889 - January 5, 1891 | |||
| E. G. Cram | January 5, 1891 - January 2, 1893 | |||
| Augustus Griffin Bennett, Sr. | January 2, 1893 - April 13, 1894 | Santa Clara | ||
| John D. Kelsey | January 7, 1895 - January 4, 1897 | Lost election after his opponent contested the election. | ||
| J. J. McLaurin | Nonpartisan | January 4, 1897 - January 2, 1899 | Won the election after contesting the election. | |
| John D. Kelsey | Republican | January 2, 1899 - January 1, 1901 | ||
| George H. Anderson | January 1, 1901 - January 5, 1903 | |||
| George Steward Walker | January 5, 1903 - January 2, 1905 | |||
| Paul J. Arnerich | January 2, 1905 - January 7, 1907 | |||
| John Turner Higgins | January 7, 1907 - January 4, 1909 | |||
| Robert L. Telfer | January 4, 1909 - January 6, 1913 | |||
| George Washington Wyllie | January 6, 1913 - January 4, 1915 | Tulare | ||
| Fred Carroll Scott | Progressive | January 4, 1915 - January 8, 1917 | ||
| Robert Horbach | Republican | January 8, 1917 - January 6, 1919 | ||
| Charles W. Cleary | January 6, 1919 - January 5, 1925 | |||
| Frank W. Mixter | January 5, 1925 - January 5, 1931 | |||
| Milton M. Golden | January 5, 1931 - January 2, 1933 | Los Angeles County, California | ||
| Austin L. Tournoux | Democratic | January 2, 1933 - January 7, 1935 | ||
| Frank D. Laughlin | January 7, 1935 - January 2, 1939 | |||
| Vernon Kilpatrick | January 2, 1939 - January 7, 1963 | |||
| F. Douglas Ferrell | January 7, 1963 - January 2, 1967 | |||
| Leon D. Ralph | January 2, 1967 – November 30, 1974 | |||
| Richard Alatorre | December 2, 1974 - December 20, 1985 | Resigned from office. | ||
| Richard Polanco | June 5, 1986 - November 30, 1992 | Sworn in after winning special election to fill the vacant seat left by Alatorre.[5] | ||
| Juanita Millender-McDonald | December 7, 1992 - April 15, 1996 | Resigned from office.[6] | ||
| Richard Floyd | December 2, 1996 - November 30, 2000 | |||
| Jenny Oropeza | December 4, 2000 – November 30, 2006 | |||
| Laura Richardson | December 4, 2006 - September 4, 2007 | Resigned from office to be sworn into Congress for the 37th Congressional district.[7] | ||
| Warren Furutani | February 7, 2008 – November 30, 2012 | Sworn in after winning special election to fill vacant seat left by Richardson.[8] | ||
| Curt Hagman | Republican | December 3, 2012 - November 30, 2014 | Los Angeles, Orange, San Bernardino | |
| Ling Ling Chang | December 2, 2014 - November 30, 2016 | |||
| Phillip Chen | December 5, 2016 – present | |||