California's 48th congressional district
Interactive map of district boundaries since 2023 (Used in the2022 elections)
Representative	Darrell Issa R–Bonsall
Population (2024)	768,439
Median household income	$114,972[1]
Ethnicity	53.3%White 29.4%Hispanic 6.9%Asian 5.4%Two or more races 3.1%Black 1.0%Native American 0.9% other
Cook PVI	R+7[2]

California's 48th congressional district is acongressional district in theU.S. state ofCalifornia that coversEast County, San Diego as well as theTemecula Valley. Major cities in the district includeTemecula,Murrieta, and portions ofEscondido. It is currently represented by RepublicanDarrell Issa.

From 2013 to 2023, the district includedCosta Mesa,Emerald Bay,Fountain Valley,Huntington Beach,Laguna Beach,Laguna Niguel,Newport Beach,Seal Beach,Sunset Beach and parts ofGarden Grove,Midway City,Aliso Viejo,Santa Ana andWestminster.^[3] It was very competitive and had recently been won by each of the two main parties. In the2018 House elections,DemocratHarley Rouda became the district's representative, defeating incumbentRepublicanDana Rohrabacher.^[4] Rouda was then defeated by RepublicanMichelle Steel in the2020 elections.

From 2003 to 2013, the district included the cities ofAliso Viejo,Dana Point,Irvine,Laguna Beach,Laguna Hills,Laguna Niguel,Laguna Woods,Lake Forest (formerly known asEl Toro),Tustin, parts ofIrvine and parts ofNewport Beach andSan Juan Capistrano.

Under the 2020 redistricting, California's 48th congressional district is located inSouthern California. The district encompasses some of theEast County and all of theMountain Empire areas ofSan Diego County; and part of southwesternRiverside County. The area in San Diego County includes the cities ofSantee,Poway, and northernEscondido; and the census-designated placesRamona,Rancho San Diego,Winter Gardens,Bostonia,Alpine,Campo,Hidden Meadows,Fallbrook,Valley Center,Bonsall,Rainbow,Pala,Borrego Springs,Julian,San Diego Country Estates,Eucalyptus Hills,Lakside,Granite Hills,Jamul,Casa de Oro-Mount Helix,Crest,Harbison Canyon,Descanso,Pine Valley,Mount Laguna,Portero,Boulevard, andJacumba. The area in Riverside County includes the cities ofTemecula andMurrieta; and the census-designated placesAguanga andLake Riverside.

San Diego County is split between this district, the49th district, the50th district, the51st district, and the52nd district. The 48th and 49th are partitioned by Gavilan Mountain Rd, Sandia Creek Dr, De Luz Rd, Marine Corps Base Pendleton, Sleeping Indian Rd, Tumbleweed Ln, Del Valle Dr, Highland Oak St, Olive Hill Rd, Via Puerta del Sol, N River Rd, Highway 76, Old River Rd, and Little Gopher Canyon Rd.

The 48th and 50th are partitioned by Gopher Canyon Rd, Escondido Freeway, Mountain Meadow Rd, Hidden Meadows, Reidy Cyn, N Broadway, Cougar Pass Rd, Adagio Way, Calle Ricardo, Tatas Place, Rue Montreux, Jesmond Dene Rd, Ivy Dell Ln, N Centre City Parkway, Highway 15, Richland Rd, Vista Canal, Woodland Parkway, W El Norte Parkway, Bennett Ave, Elser Ln, Nordahl Rd, Calavo Dr, Deodar Rd, Highway 78, Barham Dr, 2315-2339 Meyers Ave, Hill Valley Dr, County Club Dr, Auto Park Way, Highway 56, N Centre City Parkway, W Valley Parkway, N Juniper St, Highway 78, N Hickory St, E Mission Ave, Martin Dr, E Lincoln Ave, N Ash St, E Grand Ave, Bear Valley Parkway, Old Guerjito Rd, San Pasqual Battlefield State Historic Park, San Pasqual Trails Openspace, San Dieguito River Park, Bandy Canyon Rd, Santa Maria Creek, Highland Valley Rd, West Ridge Trail, Palmer Dr/Summerfield Ln, Pomerado Rd, and Carmel Mountain Ranch Openspace.

The 48th and 51st are partitioned by Sabre Springs Openspace, Scripps Miramar Openspace, Beeler Canyon Rd, Sycamore Canyon Openspace, Weston Rd, Boulder Vis, Mast Blvd, West Hills Parkway, San Diego River, Highway 52, Simeon Dr, Mission Trails Openspace, Fanita Dr, Farmington Dr, Lund St, Nielsen St, Paseo de Los Castillos, Gillespie Air Field, Kenney St, San Vicente Freeway, Airport Dr, Wing Ave, W Bradley Ave, Vernon Way, Hart Dr, Greenfield Dr, E Bradley Ave, 830 Adele St-1789 N Mollison Ave, Peppervilla Dr/N Mollison Ave, Pepper Dr, Greta St/Cajon Greens Dr, N Mollison Ave/Buckey Dr, Denver Ln, Broadway Channel, N 2nd St, Flamingo Ave/Greenfield Dr, Dawnridge Ave/Cresthill Rd, Groveland Ter/Camillo Way, Sterling Dr, Kumeyaay Highway, E Madison Ave, Granite Hills Dr, E Lexington Ave, Dehesa Rd, Vista del Valle Blvd, Merritt Ter, E Washington Ave, Merritt Dr, Dewitt Ct, Emerald Heights Rd, Foote Path Way, Highway 8, Lemon Ave, Lake Helix Dr, La Cruz Dr, Carmichael Dr, Bancroft Dr, Campo Rd, and Sweetwater River.

The 48th and 52nd are partitioned by San Miguel Rd, Proctor Valley Rd, Camino Mojave/Jonel Way, Highway 125, Upper Otay Reservoir, Otay Lakes Rd, Otay Valley Regional Park, Alta Rd, and Otay Mountain Truck Trail.

Riverside County is split between this district and the41st district. They are partitioned by Ortega Highway, Tenaja Truck Trail, NF-7506, Tenaja, San Mateo Creek, Los Alamos Rd, Und 233, S Main Dv, Wildomar, Grand Ave, Rancho Mirlo Dr, Copper Canyon Park, 42174 Kimberly Way-35817 Darcy Pl, Escondido Expressway, Scott Rd, 33477 Little Reb Pl-33516 Pittman Ln, Keller Rd, Menifee Rd, Clinton Keith Rd, Max Gilliss Blvd, Highway 79, Borel Rd, Lake Skinner, Warren Rd, Summitville St, Indian Knoll Rd, E Benton Rd, Rancho California Rd, Overhill Rd, Green Meadow Rd, Crossover Rd, Exa-Ely Rd, Denise Rd, Wiley Rd, Powerline Rd, Wilson Valley Rd, Wilson Creek, Reed Valley Rd, Centennial St, Beaver Ave, and Lake Vista Dr.

• Escondido – 151,038
• Murrieta – 113,783
• Temecula – 111,752
• Santee – 60,037
• Poway – 48,841
• Fallbrook – 32,267
• Winter Gardens – 22,380
• Rancho San Diego – 21,858
• Ramona – 21,468
• Lakeside – 21,152
• Casa de Oro-Mount Helix – 19,576
• Bostonia – 16,882
• Alpine – 14,696
• San Diego Country Estates – 10,395
• Valley Center – 10,087

• Jamul – 6,179
• Eucalyptus Hills – 5,517
• Bonsall – 4,546
• Hidden Meadows – 4,484
• Harbison Canyon – 4,048
• Granite Hills – 3,267
• Borrego Springs – 3,073
• Campo – 2,955
• Crest – 2,828

Member	Party	Dates	Cong ress	Electoral history	Counties
District created January 3, 1993
Ron Packard (Oceanside)[9]	Republican	January 3, 1993 – January 3, 2001	103rd 104th 105th 106th	Redistricted from the43rd district andre-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Retired.	1993–2003 SouthernOrange,Riverside (Temecula), NorthwesternSan Diego
Darrell Issa (Vista)[9]	Republican	January 3, 2001 – January 3, 2003	107th	Elected in 2000. Redistricted to the49th district.
Christopher Cox (Newport Beach)[9]	Republican	January 3, 2003 – August 2, 2005	108th 109th	Redistricted from the47th district andre-elected in 2002. Re-elected in 2004. Resigned to become Chairman of theU.S. Securities and Exchange Commission.	2003–2013 South-centralOrange County
Vacant		August 2, 2005 – December 7, 2005	109th
John Campbell (Irvine)[10]	Republican	December 7, 2005 – January 3, 2013	109th 110th 111th 112th	Elected to finish Cox's term. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Redistricted to the45th district.
Dana Rohrabacher (Costa Mesa)[11]	Republican	January 3, 2013 – January 3, 2019	113th 114th 115th	Redistricted from the46th district andre-elected in 2012. Re-elected in 2014. Re-elected in 2016. Lost re-election.	2013–2023 CoastalOrange County (Huntington Beach)
Harley Rouda (Newport Beach)[12]	Democratic	January 3, 2019 – January 3, 2021	116th	Elected in 2018. Lost re-election.
Michelle Steel (Seal Beach)[13]	Republican	January 3, 2021 – January 3, 2023	117th	Elected in 2020. Redistricted to the45th district.
Darrell Issa (Bonsall)[14]	Republican	January 3, 2023 – present	118th 119th	Redistricted from the50th district andre-elected in 2022. Re-elected in 2024.	2023–present: Central and eastern portions ofSan Diego county

District created January 3, 1993.

From 2003 through 2013, the district consisted of many of Orange's south-central suburbs, includingIrvine, andNewport Beach.

Due toredistricting after the2010 United States census, the district has moved south east along the coast ofOrange and then includedLaguna Beach andHuntington Beach.

After the2020 United States census, the district was moved to the inland portion ofSan Diego County, includingFallbrook,Murrieta,Temecula,Pauma Valley,Warner Springs,Borrego Springs,Santa Ysabel,Julian,Ramona,Poway,Santee,Lakeside,Descanso,Jamul,Dulzura,Alpine,Pine Valley,Campo,Jacumba Hot Springs, all of San Diego'sMountain Empire, San Diego'sIndian reservations and portions of northernEscondido, and easternLa Mesa.^[33]

• List of United States congressional districts
• California's congressional districts
• California 48th congressional district special election, 2005

• GovTrack.us:California's 48th congressional district
• RAND California Election Returns: District Definitions
• California Voter Foundation map - CD48

33°37′06″N117°52′19″W / 33.618408°N 117.871971°W /33.618408; -117.871971

• Congressional districts of California
• Government of Orange County, California
• Aliso Viejo, California
• Costa Mesa, California
• Fountain Valley, California
• Garden Grove, California
• Huntington Beach, California
• Laguna Beach, California
• Laguna Niguel, California
• Newport Beach, California
• Santa Ana, California
• Seal Beach, California
• Westminster, California
• Constituencies established in 1993
• 1993 establishments in California

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