California's 18th congressional district is a congressional district located in the U.S. state of California. The district is currently represented by . Since the 2022 election, the district is landlocked and includes all of San Benito County and parts of Santa Clara, Monterey, and Santa Cruz counties, including Salinas, Hollister, Watsonville, Gilroy, Soledad, and downtown and eastern San Jose.
History 2020 redistricting Following the 2020 census and the subsequent 2020 United States redistricting cycle, California lost a congressional district, leading to significant changes across California's districts. Most of the area previously part of the 18th district was split into the new 16th district and 19th district. The 18th district was moved to cover the Salinas Valley in Monterey County and the downtown and east side of San Jose. With the changes, the 18th became a Latino majority district.
2010 redistricting Following the 2010 census and the subsequent 2010 United States redistricting cycle, California's 18th congressional district was redrawn by the California Citizens Redistricting Commission. Cities and CDPs in the district included Palo Alto, Stanford, Los Altos, Woodside, Mountain View, Los Altos Hills, Campbell, Saratoga, Los Gatos, and Scotts Valley; most of Menlo Park and Redwood City; and part of San Jose.
2000 redistricting Following the 2000 census and the subsequent 2000 United States redistricting cycle, California's congressional districts were redrawn by the California State Legislature. From 2003 to 2013, the district was located in the San Joaquin Valley. It included Merced County and portions of San Joaquin, Stanislaus, Madera, and Fresno counties. Cities in the district included Modesto, most of Stockton, Ceres, Atwater, Merced, and Los Banos.
Recent election results from statewide races 2023–2027 boundaries Year Office Results2008 PresidentObama 71% - 28%2010 GovernorBrown 63% - 32% Lt. GovernorNewsom 57% - 34% Secretary of StateBowen 62% - 28% Attorney GeneralHarris 57% - 33% TreasurerLockyer 66% - 26% ControllerChiang 62% - 27%2012 PresidentObama 74% - 26%2014 GovernorBrown 72% - 28%2016 PresidentClinton 71% - 23%2018 GovernorNewsom 69% - 31% Attorney GeneralBecerra 71% - 29%2020 PresidentBiden 71% - 27%2022 Senate (Reg.)Padilla 68% - 32% GovernorNewsom 65% - 35% Lt. GovernorKounalakis 66% - 34% Secretary of StateWeber 66% - 34% Attorney GeneralBonta 66% - 34% TreasurerMa 65% - 35% ControllerCohen 63% - 37%2024 PresidentHarris 63% - 34% Senate (Reg.)Schiff 65% - 35%
2027–2033 boundaries Year Office Results2008 PresidentObama 71% - 28%2010 GovernorBrown 63% - 32% Lt. GovernorNewsom 57% - 34% Secretary of StateBowen 62% - 28% Attorney GeneralHarris 57% - 33% TreasurerLockyer 66% - 26% ControllerChiang 62% - 27%2012 PresidentObama 74% - 26%2014 GovernorBrown 72% - 28%2016 PresidentClinton 71% - 23%2018 GovernorNewsom 69% - 31% Attorney GeneralBecerra 71% - 29%2020 PresidentBiden 71% - 27%2022 Senate (Reg.)Padilla 68% - 32% GovernorNewsom 65% - 35% Lt. GovernorKounalakis 66% - 34% Secretary of StateWeber 66% - 34% Attorney GeneralBonta 66% - 34% TreasurerMa 65% - 35% ControllerCohen 63% - 37%2024 PresidentHarris 63% - 34% Senate (Reg.)Schiff 65% - 35%
Composition County Code County Seat Population53MontereySalinas430,72369San BenitoHollister68,17581San MateoRedwood City737,888 85 Santa Clara San Jose 1,877,59287Santa CruzSanta Cruz261,547 Under the 2020 redistricting, California's 18th congressional district was shifted geographically to cover the Salinas Valley. It encompasses San Benito County, the southernmost point of Santa Cruz County, and the interiors of Santa Clara and Monterey Counties. The area in Santa Cruz County includes most of the city of Watsonville; and the census-designated places Interlaken, Amesti, and Freedom. The area in Santa Clara County includes the center of the city of San Jose; part of the San Jose district of Alum Rock; the cities of Morgan Hill and Gilroy; and the census-designated places East Foothills and San Martin. The area in Monterey County includes the cities of Salinas, Soledad, Greenfield, King City, and Gonzales; the north side of the census-designated place Prunedale; and the census-designated places Aromas (shared with San Benito County), Pajaro, Las Lomas, Boronda, Chualar, Pine Canyon, San Lucas, San Ardo, Lockwood, and Fort Hunter Liggett.
Santa Cruz County is split between this district and the 19th district. They are partitioned by Pajaro River, Highway 129, W Beach St, Lee Rd, Highway 1, Harkins Slough Rd, Harkins Slough, Old Adobe Rd, Corralitos Creek, Varin Rd, Pioneer Rd, Green Valley Rd, Casserly Rd, Mt Madonna Rd.
Santa Clara County is split between this district, the 19th district, the 16th district, and the 17th district. The 18th, 16th, and 19th are partitioned by Bella Vista Ln, Bodfish Creek, Burchell Rd, Bluebell Dr, Day Rd, Highway G8, W San Martin Ave, Santa Teresa Blvd, Sunnyside Ave, Morgan Hill City Limits, Hale Ave, Tilton Ave, Monterey Rd, Highway 101, Coyote Rd, Anderson Lake, Las Animas Rd, Metcalf Rd, Yerba Buena Creek, Old Yerba Buena Rd, Aborn Rd, Quincy Rd, Norwood Ave, Murillo Ave, Pleasant Acres Dr, Westview Dr, Pleasant Knoll Dr, Guluzzo Dr, Flint Ave, Marten Ave, Coldwater Dr, Ocala Ave, Wonderama Dr, Cunningham Ave, Swift Ave, Highway 101, Story Rd, Monterey Rd, Highway 87, Highway 280, Highway 880. The 18th and 17th are partitioned by Steven's Creek Blvd, Di Salvo Ave, Bellerose Dr, Forest Ave, Wabash Ave, W San Carlos St, Race St, The Alameda, University Ave, Elm St, Highway 82, Newhall St, Morse St, Idaho St, Alameda Ct, Sherwood Ave, Hamline St, Highway 880, Highway 101, McKee Rd, Toyon Ave, Penitencia Creek Rd, Canon Vista Ave, Crothers Rd, Alum Rock Park, Sierra Rd, Felter Rd, Weller Rd.
Monterey County is split between this district and the 19th district. They are partitioned by Union Pacific, Highway G12, Elkhorn Rd, Echo Valley Rd, Maher Rd, Maher Ct, La Encina Dr, Crazy Horse Canyon Rd, San Juan Grade Rd, Highway 101, Espinosa Rd, Castroville Blvd, Highway 156, Highway 1, Tembladero Slough, Highway 183, Cooper Rd, Blanco Rd, Salinas River, Davis Rd, Hitchcock Rd, Highway 68, E Blanco Rd, Nutting St, Abbott St, Highway G17, Limekiln Creek, Likekiln Rd, Rana Creek, Tularcitos Creek, Highway G16, Tassajara Rd, Camp Creek, Lost Valley Creek, Lost Valley Conn, N Coast Rdg, 2 Central Coa, Cone Peak Rd, Nacimiento Fergusson Rd, Los Bueyes Creek, and the Monterey County Southern border.
Cities and CDPs with 10,000 or more people San Jose – 971,233 Salinas – 163,542 Gilroy – 58,101 Watsonville – 52,590 Morgan Hill – 45,483 Hollister – 41,678 Soledad – 24,925 Greenfield – 18,937 Prunedale – 18,885 Greenfield – 17,516 King City – 13,332 Alum Rock – 12,042
2,500 – 10,000 people
Gonzales – 8,647 Castroville – 7,515 Interlaken – 7,368 San Martin – 7,027 East Foothills – 6,803 Freedom – 3,835 Ridgemark – 3,212 Las Lomas – 3,046 Pajaro – 2,882 Aromas – 2,708 Amesti – 2,637
Future composition Beginning with the 2026 election, the 18th district will consist of the following counties:
Fresno (part) Kings (part) Monterey (part) San Benito Santa Clara (part) Santa Cruz (part)
List of members representing the district Member Party Dates Congress(es) Electoral history Counties District created March 4, 1933 John H. Burke Democratic March 4, 1933 –January 3, 1935 Elected in 1932.Retired. 1933–1963Los Angeles County Byron N. Scott Democratic January 3, 1935 –January 3, 1939 Elected in 1934.Re-elected in 1936.Lost re-election. Thomas M. Eaton Republican January 3, 1939 –September 16, 1939 Elected in 1938.Died. Vacant September 16, 1939 –January 3, 1941 William Ward Johnson Republican January 3, 1941 –January 3, 1945 Elected in 1940.Re-elected in 1942.Lost re-election. Clyde Doyle Democratic January 3, 1945 –January 3, 1947 Elected in 1944.Lost re-election. Willis W. Bradley Republican January 3, 1947 –January 3, 1949 Elected in 1946.Lost re-election. Clyde Doyle Democratic January 3, 1949 –January 3, 1953 Elected again in 1948.Re-elected in 1950.Redistricted to the . Craig Hosmer Republican January 3, 1953 –January 3, 1963 Elected in 1952.Re-elected in 1954.Re-elected in 1956.Re-elected in 1958.Re-elected in 1960. Redistricted to the . Harlan Hagen Democratic January 3, 1963 –January 3, 1967 Redistricted from the and re-elected in 1962.Re-elected in 1964.Lost re-election. 1963–1967Kern County,Kings County,Tulare County Bob Mathias Republican January 3, 1967 –January 3, 1975 Elected in 1966.Re-elected in 1968.Re-elected in 1970.Re-elected in 1972.Redistricted to the and lost re-election. 1967–1973Kern County,Tulare County 1973–1975Amador County,Calaveras County,Inyo County,Kern County (sliver in north),Madera County,Mariposa County,Mono County,Tulare County,Tuolumne County William M. Ketchum Republican January 3, 1975 –June 24, 1978 Redistricted from the and re-elected in 1974.Re-elected in 1976.Died. Inyo County,Kern County,northern Los Angeles County,Tulare County Vacant June 24, 1978 –January 3, 1979 Bill Thomas Republican January 3, 1979 –January 3, 1983 Elected in 1978.Re-elected in 1980.Redistricted to the . Richard Lehman Democratic January 3, 1983 –January 3, 1993 Elected in 1982.Re-elected in 1984.Re-elected in 1986.Re-elected in 1988.Re-elected in 1990.Redistricted to the . 1983–1993Calaveras County,Fresno County (Fresno city), Madera County,Mono County,eastern San Joaquin County,Tuolumne County Gary Condit Democratic January 3, 1993 –January 3, 2003 Redistricted from the and re-elected in 1992.Re-elected in 1994.Re-elected in 1996.Re-elected in 1998.Re-elected in 2000.Lost renomination. 1993–2003Northwestern Fresno County,western Madera County,Merced County,southwestern San Joaquin County,Stanislaus County Dennis Cardoza Democratic January 3, 2003 –August 14, 2012 Elected in 2002.Re-elected in 2004.Re-elected in 2006.Re-elected in 2008.Re-elected in 2010.Resigned to become a lobbyist. 2003–2013Small part of western Fresno County,Merced County,San Joaquin County (Stockton),western Stanislaus County Vacant August 14, 2012 –January 3, 2013 Redistricted to the Anna Eshoo Democratic January 3, 2013 –January 3, 2023 Redistricted from the and re-elected in 2012.Re-elected in 2014.Re-elected in 2016.Re-elected in 2018.Re-elected in 2020.Redistricted to the . 2013–2023 Portions of San Mateo, Santa Clara, and Santa Cruz Zoe Lofgren Democratic January 3, 2023 –present Redistricted from the and re-elected in 2022.Re-elected in 2024. 2023–presentMuch of Santa Clara County, including most of the city of San Jose
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See also List of United States congressional districts California's congressional districts
References
External links GovTrack.us: California's 18th congressional district RAND California Election Returns: District Definitions California Voter Foundation map - CD18