| District: | 13 |
| Chamber: | Senate |
| Population: | 927,480[1] |
| Population Year: | 2010 |
| Voting Age: | 719,549 |
| Citizen Voting Age: | 553,079 |
| Percent White: | 47.57 |
| Percent Black: | 2.57 |
| Percent Latino: | 21.85 |
| Percent Asian: | 25.28 |
| Percent Native American: | 0.40 |
| Percent Pacific Islander: | 1.18 |
| Percent Other Race: | 0.41 |
| Percent Remainder Of Multiracial: | 0.74 |
| Registered: | 534,908[2] |
| Democratic: | 52.51 |
| Republican: | 14.85 |
| Npp: | 28.55 |
California's 13th senatorial district is one of 40 California State Senate districts. It is currently represented by Democrat Josh Becker of Menlo Park.
The district encompasses the southern Bay Area, taking in most of San Mateo County such as the communities of South San Francisco, Pacifica, San Bruno, Millbrae, Burlingame, San Mateo, Foster City, El Granada, Hallf Moon Bay, San Carlos, Redwood City, Woodside, and Menlo Park; along with the western Santa Clara County communities of Palo Alto, Stanford, Mountain View, Cupertino, Campbell, Saratoga, and Los Gatos.
| Year | Office | Results |
|---|---|---|
| 2021 | Recall | align="right" No 79.2 – 20.8% |
| 2020 | President | Biden 78.8 – 19.2% |
| 2018 | Governor | Newsom 75.5 – 24.5% |
| Senator | Feinstein 62.5 – 37.5% | |
| 2016 | President | Clinton 76.7 – 17.9% |
| Senator | Harris 73.0 – 27.0% | |
| 2014 | Governor | Brown 75.0 – 25.0% |
| 2012 | President | Obama 71.8 – 25.6% |
| Senator | Feinstein 76.2 – 23.8% |
Due to redistricting, the 13th district has been moved around different parts of the state. The current iteration resulted from the 2011 redistricting by the California Citizens Redistricting Commission.
| Senators | Party | Years served | Counties represented | Notes |
|---|---|---|---|---|
| William Cronan | Democratic | January 8, 1883 - January 5, 1885 | San Francisco | Served together with Sullivan.[3] |
| Frank J. Sullivan | January 8, 1883 - January 5, 1885 | |||
| John L. Boone | Republican | January 5, 1885 - January 3, 1887 | Served together with Days.[4] | |
| John M. Days | January 5, 1885 - January 3, 1887 | |||
| Findley R. Dray | January 3, 1887 - January 2, 1893 | Sacramento | ||
| Elijah Carson Hart | January 2, 1893 - January 4, 1897 | |||
| Gillis Doty | Democratic | January 4, 1897 - January 1, 1901 | ||
| Robert T. Devlin | Republican | January 1, 1901 - January 2, 1905 | ||
| John G. Mattos Jr. | January 2, 1905 - January 4, 1909 | Alameda | ||
| Edward Keating Strobridge | January 4, 1909 - January 8, 1917 | |||
| Frank Monroe Carr | January 8, 1917 - January 5, 1925 | |||
| E. H. Christian | January 5, 1925 - January 2, 1933 | |||
| Charles F. Reindollar | January 2, 1933 - January 4, 1937 | Marin | ||
| Thomas F. Keating | Democratic | January 4, 1937 - September 15, 1950 | Resigned to become a Judge for the Marin Superior Court.[5] | |
| John F. McCarthy | Republican | November 13, 1950 - January 2, 1967 | Sworn in after winning special election.[6] | |
| Al Alquist | Democratic | January 2, 1967 - November 30, 1976 | Santa Clara | |
| John Garamendi | December 6, 1976 - November 30, 1984 | Alpine, Amador, Calaveras, El Dorado, Mono, Sacramento, San Joaquin, Stanislaus, Tuolumne | ||
| Al Alquist | December 3, 1984 - November 30, 1996 | Santa Clara | ||
| John Vasconcellos | December 2, 1996 – November 30, 2004 | |||
| Elaine Alquist | December 6, 2004 – November 30, 2012 | |||
| Jerry Hill | December 3, 2012 – November 30, 2020 | San Mateo, Santa Clara | ||
| Josh Becker | December 7, 2020 – present | |||