The district was represented by Democrat Adam Schiff until December 2024 when he was elected to the senate.

Democrat Laura Friedman was elected to succeed him, and took office in January 2025.

The 30th and 34th are partitioned by Crenshaw Blvd, Wilshire Blvd, S Van Ness Ave, S Wilton Pl, N Wilton Pl, Beverly Blvd, N Western Ave, Melrose Ave, Hollywood Freeway, Douglas St, Lilac Ter, N Boylston St, Academy Rd, Pasadena Freeway, Highway 5, Duvall St, Blake Ave, Fernleaf St, Crystal St, Blake Ave, Meadowvale Ave, Los Angeles, Benedict St, N Coolidge Ave, Glendale Freeway, Roswell St, Delay Dr, Fletcher Dr, Southern Pacific Railroad, S Glendale Ave, Vista Superba Dr, Verdugo Rd, Plumas St, Carr Park, Harvey Dr, and Eagle Rock Hilside Park.

The 30th, 36th, and 37th are partitioned by Phyllis Ave, N Doheny Dr, N Oakhurst Dr, Burton Way, N Robertson Blvd, 8733 Clifton Way-201 S Le Doux Rd, N San Vicente Blvd, La Cienga Park, W Olympic Blvd, San Vicente Blvd, S Cochran Ave, Edgewood Pl, S Cloverdale Ave, S La Brea Ave, and S Sycamore Ave. 1952 • 1954 • 1956 • 1958 • 1960 • 1962 • 1964 • 1966 • 1968 • 1970 • 1972 • 1974 • 1976 • 1978 • 1980 • 1982 (Special) • 1982 • 1984 • 1986 • 1988 • 1990 • 1992 • 1994 • 1996 • 1998 • 2000 • 2002 • 2004 • 2006 • 2008 • 2010 • 2012 • 2014 • 2016 • 2018 • 2020 • 2022 Before the 2013 redistricting resulting from the 2010 United States census and the 2012 elections, the western Los Angeles County district was represented by Democrat Henry A. Waxman.

From 2003 to 2013 the district included many of the cities and suburbs of western Greater Los Angeles, most notably Hollywood, West Hollywood, Beverly Hills, Santa Monica, Pacific Palisades, Malibu and Topanga, Calabasas, Agoura Hills, Woodland Hills.