2024 California State Senate election

1. 1st: Brian Dahle (R–Bieber): Termed out of office
2. 3rd: Bill Dodd (D–Napa): Termed out of office
3. 5th: Susan Eggman (D–Stockton): Termed out of office
4. 9th: Nancy Skinner (D–Berkeley): Termed out of office
5. 21st: Scott Wilk (R–Santa Clarita): Termed out of office
6. 25th: Anthony Portantino (D–La Cañada Flintridge): Termed out of office, Running for California's 30th congressional district[2]
7. 31st: Richard Roth (D–Riverside): Termed out of office
8. 35th: Steven Bradford (D–Gardena): Termed out of office
9. 37th: Dave Min (D–Irvine): Running for California's 47th congressional district[3]
10. 39th: Toni Atkins (D–San Diego): Termed out of office

The 1st district encompasses most of the Redwood Forest region and northwestern Sierra Nevada to include Siskiyou, Modoc, Lassen, Shasta, Tehama, Plumas, Glenn, Colusa, Butte, Sutter, Yuba, Nevada, and Sierra counties, along with eastern Placer County. The incumbent is Republican Brian Dahle of Bieber, who is term limited in 2024.

Including the eastern California Wine Country and University of California, Davis, the 3rd district consists of Napa, Yolo, and Solano counties. The incumbent is Democrat Bill Dodd of Napa, who is term limited in 2024.

The 5th district encompasses the northern Central Valley, containing San Joaquin County and the northeastern portion of Alameda County, including the communities of Midway, Altamont, Ulmar, Livermore, Dublin, Pleasanton, and Sunol. The incumbent is Democrat Susan Eggman of Stockton, who is term limited in 2024.

The 7th district encompasses most of Contra Costa County, including Concord, Antioch, Pittsburg, Bay Point, Martinez, Pleasant Hill, Walnut Creek, Lafayette, Danville, San Ramon, and Orinda, along with Castro Valley, San Lorenzo, and San Leandro in Alameda County. The incumbent is Democrat Steve Glazer of Orinda, who is up for reelection in 2024.

The East Bay-based 9th district consists of the urban, coastal northwestern portion of Alameda County, including Alameda, Oakland, Piedmont, Emeryville, Berkeley, El Cerrito, and Richmond. The incumbent is Democrat Nancy Skinner of Berkeley, who is term limited in 2024.

The 11th district consists of San Francisco County and Daly City at the northern tip of San Mateo County. The incumbent is Democrat Scott Wiener of San Francisco, who is up for reelection in 2024.

The 13th district encompasses the southern Bay Area to take in most of San Mateo County, including the communities of South San Francisco, Pacifica, San Bruno, Millbrae, Burlingame, San Mateo, Foster City, El Granada, Half 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, Saratoga, and Los Gatos. The incumbent is first-term Democrat Josh Becker of Menlo Park, who is up for reelection in 2024.

The 15th district encompasses central and eastern Santa Clara County. Most of the district's population lives in San Jose, but it also includes some outlying areas like Mount Hamilton, Coyote, Sveadal, Morgan Hill, and Gilroy. The incumbent is first-term Democrat Dave Cortese of San Jose, who is up for reelection in 2024.

The 17th district consists of the Big Sur section of the Central Coast, including Santa Cruz. San Benito, and Monterey counties, along with northern San Luis Obispo County. The incumbent is Democrat John Laird of Santa Cruz, who is up for reelection in 2024.

The 19th district encompasses much of the Mojave Desert as well as most of the Inland Empire's land area. It includes the central San Bernardino County communities of Barstow, Hodge, Apple Valley, Crestline, Big Bear City, Grand Terrace, Loma Linda, Redlands, Yucaipa, Yucca Valley, Joshua Tree, and Twentynine Palms, and the central Riverside County communities of Beaumont, Banning, Desert Hot Springs, Palm Springs, Cathedral City, Palm Desert, Indian Wells, and La Quinta. The incumbent is first-term Republican Rosilicie Ochoa Bogh of Yucaipa and the former 23rd district, who is up for reelection in 2024.

The 21st district consists of Santa Barbara County and southern San Luis Obispo County, along with the northern and western portions of Ventura County, including Ojai, Fillmore, Santa Paula, Ventura, Oxnard, Camarillo, and Port Hueneme. The incumbent is first-term Democrat Monique Limón of Santa Barbara and the former 19th district, who is up for reelection in 2024.

The 23rd district encompasses the Antelope Valley and Victor Valley. It includes the northern Los Angeles County communities of Santa Clarita, Quartz Hill, Lancaster, Palmdale, Acton, and Lake Los Angeles, along with the western San Bernardino County communities of Phelan, Adelanto, Victorville, and Hesperia. The incumbent is Republican Scott Wilk of Santa Clarita and the former 21st district, who is term limited in 2024.

The 25st district encompasses the western San Gabriel Valley in Los Angeles County, including the communities of Glendale, La Cañada Flintridge, Altadena, Pasadena, South Pasadena, San Marino, Alhambra, Monterey Park, San Gabriel, Rosemead, Temple City, Arcadia, Sierra Madre, Monrovia, the east San Gabriel Valley city of Glendora, and the Pomona Valley city of Claremont. The incumbent is Democrat Anthony Portantino of La Canada Flintridge, who is term limited in 2024.

The 27th district consists of the eastern Ventura County communities of Moorpark, Thousand Oaks, Simi Valley, Santa Susana, Hidden Valley, and Lake Sherwood, and the western San Fernando Valley communities of Granada Hills, Porter Ranch, Chatsworth, West Hills, Woodland Hills, and Tarzana in the northwestern corner of Los Angeles. The incumbent is Democrat Henry Stern of Malibu, who is up for reelection in 2024.

The new 29th district encompasses the urban southwestern portion of San Bernardino County, including the cities of San Bernardino, Highland, Colton, Rialto, Bloomington, Fontana, Rancho Cucamonga, and Upland. The district has no incumbent.

The 31st district encompasses the urban northwestern portion of Riverside County, including the cities of Riverside, Corona, Eastvale, Jurupa Valley, Moreno Valley, Mead Valley, Perris, and Nuevo. The incumbent is Democrat Richard Roth of Riverside, who is term limited in 2024.

The 33rd district consists of the southern Gateway Cities of Los Angeles County, including Long Beach, Signal Hill, Lakewood, Paramount, Lynwood, South Gate, Cudahy, Huntington Park, Bell, Maywood, Bell Gardens, and Commerce. The incumbent is Democrat Lena Gonzalez of Long Beach, who is up for reelection in 2024.

The 35th district consists of the southwestern Los Angeles County communities of Inglewood, Hawthorne, Lawndale, Westmont, Willowbrook, Compton, and Carson, and the Los Angeles neighborhoods of Watts, Harbor City, Wilmington, and San Pedro. The incumbent is Democrat Steven Bradford of Gardena, who is term limited in 2024.

The new 37th district encompasses much of central Orange County, including Orange, El Modena, Villa Park. Tustin, Irvine, Costa Mesa, Lake Forest, El Toro, Laguna Woods, Aliso Viejo, and Laguna Niguel. The incumbents in this area is second-term Democrat Josh Newman of Fullerton and the former 29th district and first-term Democrat David Min of Irvine and the former 37th district.

The new 39th district encompasses much of San Diego, including the neighborhoods of Point Loma, Ocean Beach, Hillcrest, North Park, Linda Vista, San Carlos, Encanto, and Paradise Hills, along with the San Diego suburbs of Coronado, La Mesa, Lemon Grove, El Cajon, La Presa, Casa de Oro, Rancho San Diego, Bostonia, and Crest. The incumbent is Democrat Toni Atkins, who is term-limited in 2024.

• 2024 California elections
• 2024 California State Assembly election