California's 18th congressional district

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

2027–2033 boundaries

Composition

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

List of members representing the district

Election results

1932

1934

1936

1938

1940

1942

1944

1946

1948

1950

1952

1954

1956

1958

1960

1962

1964

1966

1968

1970

1972

1974

1976

1978

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

2002

2004

2006

2008

2010

2012

2014

2016

2018

2020

2022

2024

References

References

1. "My Congressional District".
2. "2025 Cook PVI℠: District Map and List (119th Congress)".
3. (2022-01-04). "CA 2022 Congressional". [[Dave's Redistricting]].
4. (January 18, 2022). "Lofgren Builds Support in New Congressional District that Stretches from San Jose to Salinas". San Jose Inside.
5. "CA 2022 Congressional".
6. (8 November 2022). "Supplement to Statement of Vote".
7. (5 November 2024). "Supplement to Statement of Vote".
8. "CA 2026 Congressional".
9. "California FIPS Codes". National Weather Service.
10. "1932 election results".
11. "1934 election results".
12. "1936 election results".
13. "1938 election results".
14. "1940 election results".
15. [http://clerk.house.gov/member_info/electionInfo/1942election.pdf 1942 election results]
16. [http://clerk.house.gov/member_info/electionInfo/1944election.pdf 1944 election results]
17. [http://clerk.house.gov/member_info/electionInfo/1946election.pdf 1946 election results]
18. [http://clerk.house.gov/member_info/electionInfo/1948election.pdf 1948 election results]
19. [http://clerk.house.gov/member_info/electionInfo/1950election.pdf 1950 election results]
20. [http://clerk.house.gov/member_info/electionInfo/1952election.pdf 1952 election results]
21. "1954 election results".
22. [http://clerk.house.gov/member_info/electionInfo/1956election.pdf 1956 election results]
23. [http://clerk.house.gov/member_info/electionInfo/1958election.pdf 1958 election results]
24. [http://clerk.house.gov/member_info/electionInfo/1960election.pdf 1960 election results]
25. [http://clerk.house.gov/member_info/electionInfo/1962election.pdf 1962 election results]
26. [http://clerk.house.gov/member_info/electionInfo/1964election.pdf 1964 election results]
27. [http://clerk.house.gov/member_info/electionInfo/1966election.pdf 1966 election results]
28. [http://clerk.house.gov/member_info/electionInfo/1968election.pdf 1968 election results]
29. [http://clerk.house.gov/member_info/electionInfo/1970election.pdf 1970 election results]
30. [http://clerk.house.gov/member_info/electionInfo/1972election.pdf 1972 election results]
31. [http://clerk.house.gov/member_info/electionInfo/1974election.pdf 1974 election results]
32. [http://clerk.house.gov/member_info/electionInfo/1976election.pdf 1976 election results]
33. [http://clerk.house.gov/member_info/electionInfo/1978election.pdf 1978 election results]
34. [http://clerk.house.gov/member_info/electionInfo/1980election.pdf 1980 election results]
35. [http://clerk.house.gov/member_info/electionInfo/1982election.pdf 1982 election results]
36. [http://clerk.house.gov/member_info/electionInfo/1984election.pdf 1984 election results]
37. [http://clerk.house.gov/member_info/electionInfo/1986election.pdf 1986 election results]
38. [http://clerk.house.gov/member_info/electionInfo/1988election.pdf 1988 election results]
39. [http://clerk.house.gov/member_info/electionInfo/1990election.pdf 1990 election results]
40. [http://clerk.house.gov/member_info/electionInfo/1992election.pdf 1992 election results]
41. [http://clerk.house.gov/member_info/electionInfo/1994election.pdf 1994 election results]
42. [http://clerk.house.gov/member_info/electionInfo/1996election.pdf 1996 election results]
43. [http://clerk.house.gov/member_info/electionInfo/1998election.pdf 1998 election results]
44. [http://clerk.house.gov/member_info/electionInfo/2000election.pdf 2000 election results]
45. [http://sos.ca.gov/elections/sov/2002_general/congress.pdf 2002 general election results] {{webarchive. link. (February 3, 2009)
46. [http://sos.ca.gov/elections/sov/2004_general/us%20reps%20all%20formatted.pdf 2004 general election results] {{webarchive. link. (August 21, 2008)
47. [http://sos.ca.gov/elections/sov/2006_general/congress.pdf 2006 general election results] {{webarchive. link. (November 27, 2008)
48. [http://www.sos.ca.gov/elections/sov/2008_general/23_34_us_reps.pdf 2008 general election results] {{webarchive. link. (December 21, 2008)
49. [http://www.sos.ca.gov/elections/sov/2010_general/23_34_us_reps.pdf 2010 general election results]{{Dead link. (November 2018)
50. [http://www.sos.ca.gov/elections/sov/2012-general/12-us-reps.pdf 2012 general election results] {{webarchive. link. (October 19, 2013)
51. "U.S. House of Representatives District 18 - Districtwide Results".