| District: | 33 |
| Chamber: | Senate |
| Population: | 926,972[1] |
| Population Year: | 2010 |
| Voting Age: | 652,106 |
| Citizen Voting Age: | 414,477 |
| Percent White: | 13.00 |
| Percent Black: | 8.87 |
| Percent Latino: | 69.98 |
| Percent Asian: | 6.51 |
| Percent Native American: | 0.32 |
| Percent Pacific Islander: | 0.58 |
| Percent Other Race: | 0.24 |
| Percent Remainder Of Multiracial: | 0.49 |
| Registered: | 442,974[2] |
| Democratic: | 57.60 |
| Republican: | 11.83 |
| Npp: | 24.62 |
California's 33rd senatorial district is one of 40 California State Senate districts. It is currently represented by of .
The district encompasses a strip of the Gateway Cities, stretching from parts of South Los Angeles to the coast, including the Port of Long Beach and a significant portion of Long Beach itself.
Los Angeles County – 9.4%
| Year | Office | Results |
|---|---|---|
| 2020 | President | Biden 76.7 – 20.8% |
| 2018 | Governor | Newsom 78.2 – 21.8% |
| Senator | Feinstein 54.1 – 45.9% | |
| 2016 | President | Clinton 79.1 – 15.2% |
| Senator | Harris 51.8 – 48.2% | |
| 2014 | Governor | Brown 73.7 – 26.3% |
| 2012 | President | Obama 78.6 – 19.1% |
| Senator | Feinstein 78.8 – 21.2% |
| Senators | Party | Years served | Electoral history | Counties represented | ||
|---|---|---|---|---|---|---|
| District established January 3, 1887 | ||||||
| align=left | James D. Byrnes | Republican | January 3, 1887 – January 2, 1893 | Elected in 1886. Re-elected in 1888. | San Mateo, Santa Cruz | |
| align=left | Thomas Flint Jr. | Republican | January 2, 1893 – January 2, 1905 | Redistricted from the 35th district and re-elected in 1892. Re-elected in 1896. Re-elected in 1900. | Monterey, San Benito | |
| align=left | Charles B. Greenwell | Republican | January 2, 1905 – January 4, 1909 | Redistricted from the 35th district and re-elected in 1904. | Santa Barbara, Ventura | |
| align=left | Louis H. Roseberry | Republican | January 4, 1909 – January 6, 1913 | Elected in 1908. | ||
| Prescott F. Cogswell | Republican | January 6, 1913 – January 8, 1917 | Elected in 1912. Lost re-election as a Progressive. | Los Angeles | ||
| Progressive | ||||||
| align=left | Joseph A. Rominger | Republican | January 8, 1917 – January 5, 1925 | Elected in 1918. Re-elected in 1920. | ||
| align=left | Cadet Taylor | Republican | January 5, 1925 – January 7, 1929 | Elected in 1924. | ||
| align=left | Frank Merriam | Republican | January 7, 1929 – January 6, 1931 | Elected in 1928. Resigned when elected as Lieutenant Governor. | ||
| Vacant | January 6, 1931 – March 4, 1931 | |||||
| align=left | Ralph H. Clock | Republican | March 4, 1931 – January 2, 1933 | Elected to finish Merriam's term. Not a candidate for the next election. | ||
| align=left | Walter H. Duval | Republican | January 2, 1933 – January 4, 1937 | Redistricted from the 25th district and re-elected in 1932. | Ventura | |
| align=left | James J. McBride | Democratic | January 4, 1937 – June 12, 1961 | Elected in 1936. Re-elected in 1940. Re-elected in 1944. Re-elected in 1948. Re-elected in 1952. Re-elected in 1956. Re-elected in 1960. Died. | ||
| Vacant | June 12, 1961 – November 10, 1961 | |||||
| align=left | Robert J. Lagomarsino | Republican | November 10, 1961 – January 2, 1967 | Elected to finish McBride's term. Re-elected in 1962. Redistricted to the 24th district. | ||
| align=left | Joseph M. Kennick | Democratic | January 2, 1967 – November 30, 1976 | Elected in 1966. Re-elected in 1968. Re-elected in 1972. | Los Angeles | |
| align=left | William Campbell | Republican | December 6, 1976 – November 30, 1984 | Elected in 1976. Re-elected in 1980. Redistricted to the 31st district. | ||
| align=left | Paul B. Carpenter | Democratic | December 3, 1984 – January 5, 1987 | Redistricted from the 37th district and re-elected in 1984. Resigned to become a member of the California State Board of Equalization. | Los Angeles, Orange | |
| Vacant | January 5, 1987 – May 18, 1987 | |||||
| align=left | Cecil Green | Democratic | May 18, 1987 – November 30, 1992 | Elected to finish Carpenter's term. Re-elected in 1988. | ||
| align=left | John Lewis | Republican | December 7, 1992 – November 30, 2000 | Redistricted from the 35th district and re-elected in 1992. Re-elected in 1996. Retired due to term limits. | Orange | |
| align=left | Dick Ackerman | Republican | December 4, 2000 – November 30, 2008 | Elected in 2000. Re-elected in 2004. Retired due to term limits. | ||
| align=left | Mimi Walters | Republican | December 1, 2008 – November 30, 2012 | Elected in 2008. Redistricted to the 37th district. | ||
| align=left | Ricardo Lara | Democratic | December 3, 2012 – January 7, 2019 | Elected in 2012. Re-elected in 2016. Resigned after being elected as Insurance Commissioner. | Los Angeles | |
| Vacant | January 7, 2019 – June 12, 2019 | |||||
| align=left | Lena Gonzalez | Democratic | June 12, 2019 – present | Elected to finish Lara's term. Re-elected in 2020. Re-elected in 2024. | ||