California's 9th congressional district
Interactive map of district boundaries since 2023 (Used in the 2022 elections). After the 2020 redistricting cycle, this district includes the California cities of Tracy and Manteca, but does not include Brentwood nor Lathrop.
Representative	Josh Harder D–Tracy
Population (2023)	770,568
Median household income	$87,352
Ethnicity	41.5% Hispanic 28.7% White 16.5% Asian 7.3% Black 4.4% Two or more races 1.5% other
Cook PVI	D+5

California's 9th congressional district is a congressional district in the U.S. state of California. Josh Harder, a Democrat, has represented the district since January 2023.

Prior to redistricting by the California Citizens Redistricting Commission of 2011, the 9th district encompassed part of the East Bay region of the San Francisco Bay Area. Cities in the district included Oakland, Berkeley and Castro Valley. Most of that area became parts of 13th district, while the 9th district in 2012 through 2022 was primarily made up of portions of the 18th and 11th districts from the 2002 through 2012.

Since the redistricting prior to the 2012 election, the 9th district centered on Stockton. It consisted of most of San Joaquin County and portions of Contra Costa and Sacramento counties. Cities in the district include Galt, Oakley, Lodi, Mountain House, and Stockton.

With the redistricting in advance of the 2022 elections in California, the 9th district is still centered on Stockton. However, Tracy, Manteca, and Ripon, which were formerly in California's 10th congressional district, are now part of this district, while Antioch, Lathrop and Brentwood are no longer in the district. Antioch and Brentwood are part of the new 10th district, which is now west of the 9th district (as opposed to south). Lathrop will be part of the new 13th district.

John Kerry won the penultimate version of the district in 2004 with 85.9% of the vote. Barack Obama swept the same district in 2008 with 88.13% of the vote while John McCain received 9.87% of the vote, making it Obama's best and McCain's worst performance in California. The latter version of the 9th district (starting in 2012) was substantially more competitive, though it also favored the Democratic Party. According to poll-aggregation website FiveThirtyEight, the 2022 version of the district leans toward the Democratic Party.

Year	Office	Results
1992	President	Clinton 78.7 - 12.4%
	U.S. Senator	Boxer 80.5 - 14.5%
	U.S. Senator	Feinstein 82.9 - 13.0%
1994	Governor
	U.S. Senator
1996	President
1998	Governor
	U.S. Senator
2000	President	Gore 78.6 - 12.0%
	Senator	Feinstein 73.1 - 12.2%
2002	Governor	Davis 67.5 - 12.8%
2003	Recall	82.1 - 17.9%
		Bustamante 66.2 - 14.7%
2004	President	Kerry 85.9 - 12.6%
	Senator	Boxer 84.4 - 11.1%
2006	Governor	Angelides 67.3 - 24.0%
	Senator	Feinstein 81.4 - 8.3%
2008	President	Obama 88.1 - 9.9%
2010	Governor	Brown 85.1 - 11.4%
	Senator	Boxer 84.8 - 11.7%
2012	President	Obama 58.2 - 40.0%
	Senator	Feinstein 59.6 - 40.4%
2014	Governor	Brown 55.1 - 44.9%
2016	President	Clinton 56.6 - 38.0%
	Senator	Harris 59.0 - 41.0%
2018	Governor	Newsom 53.9 - 46.1%
	Senator	de Leon 51.2 - 48.8%
2020	President	Biden 57.9 - 39.9%
2021	Recall	55.2 - 44.8%
		Elder 52.5 - 6.5%
2022	Governor	Dahle 52.5 - 47.5%
	Senator	Padilla 50.8 - 49.2%

As of the 2022 redistricting, California's 9th congressional district is located between the Sacramento Valley, Gold Country, and the San Joaquin Valley. It encompasses most of San Joaquin County, and parts of Contra Costa and Stanislaus Counties.

San Joaquin County is split between this district and the 13th district. They are partitioned by Union Pacific, Highway 380, S Tracy Blvd, the California Aqueduct, S Banta Rd, Highway 5, Paradise Cut, S Manthey Rd, Walthall Slough, E West Ripon Rd, Kincaid Rd, Hutchinson Rd, and Stanislaus River. The 9th district takes in the cities of Stockton, Tracy, Manteca, Lodi, Ripon, and Escalon and the census-designated places Mountain House, Terminous, Thornton, Collierville, Woodbridge, Acampo, Dogtown, Lockeford, Victor, Lincoln Village, Morada, Country Club, August, Garden Acres, Kennedy, Taft Mosswood, French Camp, Waterloo, Linden, Peters, Farmington, and Del Rio.

Contra Costa County is split between this district and the 10th district. They are partitioned by Old River, Italian Slough, Western Farms Ranch Rd, Rankin Rd, Highway J14, Byron Hot Springs Rd, Camino Diablo, Kellogg Creek, Sellers Ave, Brentwood Blvd, Alloro Dr, Ghiggeri Dr, Emilio Dr, Guthrie Ln, Balfour Rd, Chestnut St, Byron Highway, Orwood Rd, Burlington Northern Santa Fe, Werner Dredger Cut, and Rock Slough. The 9th district takes in the census-designated places Discovery Bay and Byron.

Stanislaus County is split between this district and the 13th district. Lon Dale Rd, Highway J9, Highway J14, River Rock Rd, Lesnini Creek, Sonora Rd, and Stanislaus River. The 9th district takes in the Woodward Reservoir, and the only census-designated place within it is Valley Home.

• Stockton – 320,804
• Tracy – 93,000
• Manteca – 83,498
• Lodi – 67,258
• Mountain House – 24,499
• Ripon – 16,013
• Discovery Bay – 15,385
• Garden Acres – 11,398
• Country Club – 10,777

• August – 8,628
• Escalon – 7,472
• Lincoln Village – 4,401
• Woodbridge – 4,031
• French Camp – 3,770
• Lockeford – 3,521
• Kennedy – 3,256
• Morada – 3,166
• Collierville – 2,698
• Dogtown – 2,643

Representative	Party	Dates	Cong ress	Electoral history	Counties
District created March 4, 1913
Charles W. Bell (Pasadena)	Progressive	March 4, 1913 – March 3, 1915	63rd	Elected in 1912. Lost re-election.	Los Angeles outside Los Angeles city
Charles Hiram Randall (Los Angeles)	Prohibition	March 4, 1915 – March 3, 1921	64th 65th 66th	Elected in 1914. Re-elected in 1916. Re-elected in 1918. Lost re-election.
Vacant		March 4, 1921 – April 11, 1921	67th	Representative-elect Charles F. Van de Water died November 20, 1920.
Walter F. Lineberger (Long Beach)	Republican	April 11, 1921 – March 3, 1927	67th 68th 69th	Elected to finish Van de Water's term. Re-elected in 1922. Re-elected in 1924. Retired to run for U.S. Senator.
William E. Evans (Glendale)	Republican	March 4, 1927 – March 3, 1933	70th 71st 72nd	Elected in 1926. Re-elected in 1928. Re-elected in 1930. Redistricted to the 11th district.
Denver S. Church (Fresno)	Democratic	March 4, 1933 – January 3, 1935	73rd	Elected in 1932. Retired.	1933–1943 Fresno, Kings, Madera, Merced, Stanislaus
Bertrand W. Gearhart (Fresno)	Republican	January 3, 1935 – January 3, 1949	74th 75th 76th 77th 78th 79th 80th	Elected in 1934. Re-elected in 1936. Re-elected in 1938. Re-elected in 1940. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Lost re-election.
					1943–1953 Fresno, Madera, Merced, Stanislaus
Cecil F. White (Fresno)	Democratic	January 3, 1949 – January 3, 1951	81st	Elected in 1948. Lost re-election.
Allan O. Hunter (Fresno)	Republican	January 3, 1951 – January 3, 1953	82nd	Elected in 1950. Redistricted to the 12th district.
J. Arthur Younger (San Mateo)	Republican	January 3, 1953 – January 3, 1963	83rd 84th 85th 86th 87th	Elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Redistricted to the 11th district.	San Mateo
Don Edwards (San Jose)	Democratic	January 3, 1963 – January 3, 1975	88th 89th 90th 91st 92nd 93rd	Elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Re-elected in 1972. Redistricted to the 10th district.	1963–1967 Eastern Santa Clara
					1967–1973 Southwest Alameda, most of Santa Clara
					1973–1975 Southwest Alameda, northeast Santa Clara
Pete Stark (Oakland)	Democratic	January 3, 1975 – January 3, 1993	94th 95th 96th 97th 98th 99th 100th 101st 102nd	Redistricted from the 8th district and re-elected in 1974. Re-elected in 1976. Re-elected in 1978. Re-elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. Redistricted to the 13th district.	1975–1983 Alameda outside Oakland
Ron Dellums (Oakland)	Democratic	January 3, 1993 – February 6, 1998	103rd 104th 105th	Redistricted from the 8th district and re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Resigned.	1993–2003 Alameda (Berkeley, Oakland)
Vacant		February 6, 1998 – April 7, 1998	105th
Barbara Lee (Oakland)	Democratic	April 7, 1998 – January 3, 2013	105th 106th 107th 108th 109th 110th 111th 112th	Elected to finish Dellums's term. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Redistricted to the 13th district.
					2003–2013 Alameda (Berkeley, Oakland)
Jerry McNerney (Stockton)	Democratic	January 3, 2013 – January 3, 2023	113th 114th 115th 116th 117th	Redistricted from the 11th district and re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Retired.	2013–2023 Central Valley including San Joaquin Delta and Stockton
Josh Harder (Tracy)	Democratic	January 3, 2023 – present	118th	Redistricted from the 10th district and re-elected in 2022.	2023–present: northern San Joaquin Valley

Republican Walter F. Lineberger won the special election to replace fellow Republican Charles F. Van de Water, who won the election but died before the 67th Congress convened. Data for this special election is not available.

• List of United States congressional districts
• California's congressional districts

• GovTrack.us: California's 9th congressional district