The 2024 Los Angeles County Board of Supervisors elections took place on March 5, 2024, to elect members of the Los Angeles County Board of Supervisors. Three of the five seats on the board were up for election to four-year terms. Municipal elections in California are officially nonpartisan; candidates' party affiliations do not appear on the ballot.
Incumbent supervisors Kathryn Barger, Janice Hahn, and Holly Mitchell all won re-election outright, negating the need for a runoff. This was the first supervisorial election cycle without a second round of voting since 2018.
The second supervisorial comprises the cities of Carson, Compton, Culver City, El Segundo, Gardena, Hermosa Beach, Inglewood, Lawndale, Manhattan Beach, and Redondo Beach; the communities of Alondra Park, Del Aire, East Compton, East Gardena, Florence-Graham, Ladera Heights, Lennox, Marina Del Ray, West Athens, West Carson, Westmont, and Willowbrook; as well as the neighborhoods of Westchester and Harbor City north to Koreatown. Incumbent supervisor Holly Mitchell was first elected in a runoff with 60.6% of the vote in 2020.
The fourth supervisorial comprises the cities of Artesia, Bell, Bell Gardens, Bellflower, Cerritos, Commerce, Cudahy, Hawaiian Gardens, Huntington Park, La Habra Heights, La Mirada, Lakewood, Lomita, Long Beach, Lynwood, Maywood, Norwalk, Palos Verdes Estates, Paramount, Pico Rivera, Rancho Palos Verdes, Rolling Hills, Rolling Hills Estates, Santa Fe Springs, Signal Hill, South Gate, Torrance, Vernon, and Whittier; the communities of East Whittier, Rose Hills, South Whittier, Walnut Park, and West Whittier-Los Nietos; and the Los Angeles neighborhoods of San Pedro and Wilmington. Incumbent supervisor Janice Hahn was re-elected in 2020 with 76.2% of the vote.
The fifth supervisorial district comprises the cities of Arcadia, Bradbury, Claremont, Duarte, Glendale, Glendora, La Cañada Flintridge, La Verne, Lancaster, Monrovia, Palmdale, Pasadena, San Dimas, San Marino, Santa Clarita, Sierra Madre, South Pasadena, and Temple City; the communities of Acton, Altadena, Castaic, La Crescenta-Montrose, Lake Los Angeles, and Stevenson Ranch; and the Los Angeles neighborhoods of Sunland-Tujunga and North Hollywood. Incumbent supervisor Kathryn Barger was re-elected in 2020 with 58.8% of the vote.