| District: | 15 |
| Chamber: | Assembly |
| Population: | 512,289[1] |
| Population Year: | 2020 |
| Percent White: | 37.03 |
| Percent Black: | 9.78 |
| Percent Latino: | 31.96 |
| Percent Asian: | 13.78 |
| Percent Native American: | 0.28 |
| Percent Pacific Islander: | 0.71 |
| Percent Other Race: | 0.67 |
| Percent Remainder Of Multiracial: | 5.79 |
| Registered: | 310,142[2] |
| Democratic: | 69.54 |
| Republican: | 5.64 |
| Npp: | 21.01 |
California's 15th State Assembly district is one of 80 California State Assembly districts. It is currently represented by Democrat Tim Grayson of Concord.[3]
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%[1]
| Year | Office | Results[4] |
|---|---|---|
| 2012 | President | Obama 68.7 – 28.7% |
| Senator | Feinstein 71.8 – 28.2% | |
| 2014 | Governor | Brown 70.4 – 29.6% |
| 2016 | President | Clinton 69.7 – 24.5% |
| Senator | Harris 69.1 – 30.9% | |
| 2018 | Governor | Newsom 69.2 – 30.8% |
| Senator | Feinstein 57.2 – 42.8% | |
| 2020 | President | Biden 71.8 – 25.8% |
| 2021 | Recall | align="right" No 71.5 – 28.5% |
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.
| Assembly members | Party | Years served | Counties represented | Notes |
|---|---|---|---|---|
| Austin Walrath | Republican | January 5, 1885 - January 3, 1887 | Nevada | |
| Josiah Sims | January 3, 1887 - January 5, 1891 | |||
| Michael Garver | Democratic | January 5, 1891 - January 2, 1893 | ||
| Robert S. Raw | Republican | January 2, 1893 - January 7, 1895 | El Dorado | |
| Charles A. Swisler | January 7, 1895 - January 4, 1897 | |||
| George Burnham | January 4, 1897 - January 2, 1899 | |||
| Robert S. Raw | January 2, 1899 - January 1, 1901 | |||
| S. W. Irving | Democratic | January 1, 1901 - January 5, 1903 | ||
| Charles O. Dunbar | January 5, 1903 - January 2, 1905 | Sonoma | ||
| H. L. Tripp | Republican | January 2, 1905 - April 26, 1906 | Resigned from office, 8 days after the San Francisco Earthquake.[5] | |
| Henry W. A. Weske | January 7, 1907 - January 4, 1909 | |||
| Louis W. Juilliard | Democratic | January 4, 1909 - January 2, 1911 | ||
| Herbert W. Slater | January 2, 1911 - January 6, 1913 | |||
| J. M. Inman | Republican | January 6, 1913 - January 4, 1915 | Sacramento | |
| Walter W. Chenoweth | January 4, 1915 - January 8, 1917 | |||
| John W. Johnston | January 8, 1917 - January 5, 1925 | |||
| Roy J. Nielsen | January 5, 1925 - January 5, 1931 | |||
| Frank S. Israel | January 5, 1931 - September 26, 1932 | San Joaquin | Died in office after falling from a haysack.[6] | |
| William F. Knowland | January 2, 1933 - January 7, 1935 | Alameda | ||
| Charles J. Wagner | Democratic | January 7, 1935 - January 4, 1937 | ||
| George P. Miller | January 4, 1937 – January 6, 1941 | |||
| Randal F. Dickey | Republican | January 6, 1941 - January 7, 1957 | ||
| Robert W. Crown | Democratic | January 7, 1957 - May 21, 1973 | Died in office. | |
| Bill Lockyer | September 10, 1973 – November 30, 1982 | Sworn in after he won the special election.[7] | ||
| Johan Klehs | December 6, 1982 – November 30, 1992 | |||
| Tom Bates | December 7, 1992 – November 30, 1996 | Alameda, Contra Costa | ||
| Dion Aroner | December 6, 1996 – November 30, 2002 | |||
| Loni Hancock | December 2, 2002 – November 30, 2008 | |||
| Nancy Skinner | December 1, 2008 – November 30, 2012 | |||
| Susan Bonilla | December 3, 2012 – November 30, 2016 | Contra Costa, Solano | ||
| Tim Grayson | December 5, 2016 – present |