California's 48th congressional district

"CA 48" redirects here. For California State Route 48, see Unconstructed state highways in California. For the isotope of calcium, see Calcium-48.

California's 48th congressional district is a congressional district in the U.S. state of California that covers East County, San Diego as well as the Temecula Valley. Major cities in the district include Temecula, Murrieta, and portions of Escondido. It is currently represented by Republican Darrell Issa.

California's 48th congressional district
Interactive map of district boundaries since 2023 (Used in the 2022 elections)
Representative	Darrell Issa R–Bonsall
Population (2023)	740,583
Median household income	$111,073[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+9[2]
Created	1993

From 2013 to 2023, the district included Costa Mesa, Emerald Bay, Fountain Valley, Huntington Beach, Laguna Beach, Laguna Niguel, Newport Beach, Seal Beach, Sunset Beach and parts of Garden Grove, Midway City, Aliso Viejo, Santa Ana and Westminster.^[3] It was very competitive and had recently been won by each of the two main parties. In the 2018 House elections, Democrat Harley Rouda became the district's representative, defeating incumbent Republican Dana Rohrabacher.^[4] Rouda was then defeated by Republican Michelle Steel in the 2020 elections.

From 2003 to 2013, the district included the cities of Aliso Viejo, Dana Point, Irvine, Laguna Beach, Laguna Hills, Laguna Niguel, Laguna Woods, Lake Forest (formerly known as El Toro), Tustin, parts of Irvine and parts of Newport Beach and San Juan Capistrano.

Recent election results from statewide races

Year	Office	Results[5][6][7]
2008	President	McCain 61% - 39%
2010	Governor	Whitman 63% - 31%
	Lt. Governor	Maldonado 58% - 29%
	Secretary of State	Dunn 61% - 31%
	Attorney General	Cooley 66% - 25%
	Treasurer	Walters 58% - 35%
	Controller	Strickland 57% - 35%
2012	President	Romney 63% - 37%
2014	Governor	Kashkari 65% - 35%
2016	President	Trump 57% - 37%
2018	Governor	Cox 62% - 38%
	Attorney General	Bailey 60% - 40%
2020	President	Trump 55% - 43%
2022	Senate (Reg.)	Meuser 60% - 40%
	Governor	Dahle 62% - 38%
	Lt. Governor	Underwood Jacobs 61% - 39%
	Secretary of State	Bernosky 61% - 39%
	Attorney General	Hochman 61% - 39%
	Treasurer	Guerrero 62% - 38%
	Controller	Chen 63% - 37%
2024	President	Trump 56% - 41%
	Senate (Reg.)	Garvey 60% - 40%

Composition

#	County	Seat	Population
65	Riverside	Riverside	2,492,442
73	San Diego	San Diego	3,269,973

As of the 2020 redistricting, California's 48th congressional district is located in Southern California. The district encompasses some of the East County and all of the Mountain Empire areas of San Diego County, and part of southwestern Riverside County.

San Diego County is split between this district, the 49th district, the 50th district, the 51st district, and the 52nd 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. The 48th district takes in the cities of Santee, Poway, and northern Escondido, as well as the census-designated places Ramona, 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, and Jacumba.

Riverside County is split between this district and the 41st 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. The 48th district takes in the cities of Temecula and Murrieta and the census-designated places Aguanga and Lake Riverside.

Cities and CDPs with 10,000 or more people

• 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

2,500 – 10,000 people

• 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

List of members representing the district

Member	Party	Dates	Cong ress	Electoral history	Counties
District created January 3, 1993
Ron Packard (Oceanside)[8]	Republican	January 3, 1993 – January 3, 2001	103rd 104th 105th 106th	Redistricted from the 43rd district and re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Retired.	1993–2003 Southern Orange, Riverside (Temecula), Northwestern San Diego
Darrell Issa (Vista)[8]	Republican	January 3, 2001 – January 3, 2003	107th	Elected in 2000. Redistricted to the 49th district.
Christopher Cox (Newport Beach)[8]	Republican	January 3, 2003 – August 2, 2005	108th 109th	Redistricted from the 47th district and re-elected in 2002. Re-elected in 2004. Resigned to become Chairman of the U.S. Securities and Exchange Commission.	2003–2013 South-central Orange County
Vacant		August 2, 2005 – December 7, 2005	109th
John Campbell (Irvine)[9]	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 the 45th district.
Dana Rohrabacher (Costa Mesa)[10]	Republican	January 3, 2013 – January 3, 2019	113th 114th 115th	Redistricted from the 46th district and re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Lost re-election.	2013–2023 Coastal Orange County (Huntington Beach)
Harley Rouda (Newport Beach)[11]	Democratic	January 3, 2019 – January 3, 2021	116th	Elected in 2018. Lost re-election.
Michelle Steel (Surfside)[12]	Republican	January 3, 2021 – January 3, 2023	117th	Elected in 2020. Redistricted to the 45th district.
Darrell Issa (San Diego)[13]	Republican	January 3, 2023 – present	118th 119th	Redistricted from the 50th district and re-elected in 2022. Re-elected in 2024.	2023–present: Central and eastern portions of San Diego county

Election results

District created January 3, 1993.

1992

1992 United States House of Representatives elections in California^[14]

Party		Candidate	Votes	%
	Republican	Ron Packard (Incumbent)	140,935	61.1
	Democratic	Michael P. "Mike" Farber	67,415	29.3
	Peace and Freedom	Donna White	13,396	5.8
	Libertarian	Ted Lowe	8,749	3.8
Total votes			230,495	100.0
	Republican hold

1994

1994 United States House of Representatives elections in California^[15]

Party		Candidate	Votes	%
	Republican	Ron Packard (Incumbent)	143,570	73.4
	Democratic	Andrei Leschick	43,523	22.2
	Reform	Donna White	8,543	4.4
Total votes			195,636	100.0
	Republican hold

1996

1996 United States House of Representatives elections in California^[16]

Party		Candidate	Votes	%
	Republican	Ron Packard (Incumbent)	145,814	65.9
	Democratic	Dan Farrell	59,558	26.9
	Reform	William Dreu	8,013	3.6
	Natural Law	Sharon Miles	8,006	3.6
Total votes			221,391	100.0
	Republican hold

1998

1998 United States House of Representatives elections in California^[17]

Party		Candidate	Votes	%
	Republican	Ron Packard (Incumbent)	138,948	76.9
	Natural Law	Sharon K. Miles	23,262	12.9
	Libertarian	Daniel L. Muhe	18,509	10.2
Total votes			180,719	100.0
	Republican hold

2000

2000 United States House of Representatives elections in California^[18]

Party		Candidate	Votes	%
	Republican	Darrell Issa	160,627	61.5
	Democratic	Peter Kouvelis	74,073	28.4
	Reform	Eddie Rose	11,240	4.3
	Natural Law	Sharon K. Miles	8,269	3.1
	Libertarian	Joe Michael Cobb	7,269	2.7
Total votes			261,478	100.0
	Republican hold

2002

2002 United States House of Representatives elections in California^[19]

Party		Candidate	Votes	%
	Republican	Christopher Cox (Incumbent)	122,884	68.5
	Democratic	John Graham	51,058	28.4
	Libertarian	Joe Michael Cobb	5,607	3.1
Total votes			179,549	100.0
	Republican hold

2004

2004 United States House of Representatives elections in California^[20]

Party		Candidate	Votes	%
	Republican	Christopher Cox (Incumbent)	189,004	65.0
	Democratic	John Graham	93,525	32.2
	Libertarian	Bruce Cohen	8,343	2.8
Total votes			290,872	100.0
	Republican hold

2005

2005 California 48th congressional district special election^[21]

Party		Candidate	Votes	%
	Republican	John Campbell	46,184	44.4
	Democratic	Steve Young	28,853	27.8
	American Independent	Jim Gilchrist	26,507	25.5
	Green	Bea Tiritilli	1,430	1.4
	Libertarian	Bruce Cohen	974	0.9
Invalid or blank votes			457	0.4
Total votes			104,405	100.0
Turnout				25.7
	Republican hold

2006

2006 United States House of Representatives elections in California^[22]

Party		Candidate	Votes	%
	Republican	John Campbell (Incumbent)	120,130	59.9
	Democratic	Steve Young	74,647	37.2
	Libertarian	Bruce Cohen	5,750	2.9
Total votes			200,527	100.0
	Republican hold

2008

2008 United States House of Representatives elections in California^[23]

Party		Candidate	Votes	%
	Republican	John Campbell (Incumbent)	171,658	55.7
	Democratic	Steve Young	125,537	40.6
	Libertarian	Don Patterson	11,507	3.7
Total votes			308,702	100.00
	Republican hold

2010

2010 United States House of Representatives elections in California^[24]

Party		Candidate	Votes	%
	Republican	John Campbell (Incumbent)	145,481	60.0
	Democratic	Beth Krom	88,465	36.4
	Libertarian	Mike Binkley	8,773	3.6
Total votes			242,719	100.0
	Republican hold

2012

2012 United States House of Representatives elections in California^[25]

Party		Candidate	Votes	%
	Republican	Dana Rohrabacher (Incumbent)	177,144	61.0
	Democratic	Ron Varasteh	113,358	39.0
Total votes			290,502	100.0
	Republican hold

2014

2014 United States House of Representatives elections in California^[26]

Party		Candidate	Votes	%
	Republican	Dana Rohrabacher (Incumbent)	112,082	64.1
	Democratic	Suzanne Joyce Savary	62,713	35.9
Total votes			174,795	100.0
	Republican hold

2016

2016 United States House of Representatives elections in California^[27]

Party		Candidate	Votes	%
	Republican	Dana Rohrabacher (Incumbent)	178,701	58.3
	Democratic	Suzanne Joyce Savary	127,715	41.7
Total votes			306,416	100.0
	Republican hold

2018

2018 United States House of Representatives elections in California^[28]

Party		Candidate	Votes	%
	Democratic	Harley Rouda	157,837	53.6
	Republican	Dana Rohrabacher (Incumbent)	136,899	46.4
Total votes			294,736	100.0
	Democratic gain from Republican

2020

2020 United States House of Representatives elections in California^[29]

Party		Candidate	Votes	%
	Republican	Michelle Steel	201,738	51.1
	Democratic	Harley Rouda (Incumbent)	193,362	48.9
Total votes			395,100	100.0
	Republican gain from Democratic

2022

2022 United States House of Representatives elections in California^[30]

Party		Candidate	Votes	%
	Republican	Darrell Issa (Incumbent)	151,171	60.4
	Democratic	Stephen Houlahan	101,900	39.6
Total votes			253,071	100.0
	Republican hold

Historical district boundaries

2003-13

From 2003 through 2013, the district consisted of many of Orange's south-central suburbs, including Irvine, and Newport Beach.

2013-23

Due to redistricting after the 2010 United States census, the district has moved south east along the coast of Orange and then included Laguna Beach and Huntington Beach.

After the 2020 United States census, the district was moved to the inland portion of San Diego County, including Fallbrook, 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's Mountain Empire, San Diego's Indian reservations and portions of northern Escondido, and eastern La Mesa.^[31]

See also

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

• United States portal
• California portal

References

1. Center for New Media & Promotion (CNMP), US Census Bureau. "My Congressional District". www.census.gov. Retrieved September 21, 2024.
2. "2022 Cook PVI: District Map and List". Cook Political Report. July 12, 2022. Retrieved January 10, 2023.
3. "California's 48th Congressional District - CA-48 Representatives & District Map - GovTrack.us". GovTrack.us.
4. Andrew Gumbel (November 10, 2018). "Republican dubbed 'Russia's favorite congressman' loses seat after 30 years". The Guardian. Retrieved November 10, 2018.
5. https://davesredistricting.org/maps#viewmap::e164e6f9-b758-4c9e-b6bb-332a1386c0cd
6. "Complete Supplement to the Statement of Vote" (PDF). November 8, 2022. Archived (PDF) from the original on January 8, 2025. Retrieved January 21, 2025.
7. Giroux, Greg (January 24, 2025). "Two California Democrats Chart Middle Course in Trump Districts". Bloomberg Government. Retrieved February 5, 2025.
8. "Biographical Directory of the United States Congress 1774–2005" (PDF). govinfo.gov. Retrieved February 19, 2024.
9. "Ex-Congressman John Campbell asks $6.7 million for Irvine house with 'Bat-cave' garage". July 8, 2016.
10. Nominations clerk.house.gov
11. Nominations clerk.house.gov
12. Nominations clerk.house.gov
13. Washington, U. S. Capitol Room H154; p:225-7000, DC 20515-6601. "Darrell Issa (California (CA)), 118th Congress Profile". Office of the Clerk, U.S. House of Representatives. Retrieved January 18, 2024.{{cite web}}: CS1 maint: numeric names: authors list (link)
14. 1992 election results
15. 1994 election results
16. 1996 election results
17. 1998 election results
18. 2000 election results
19. 2002 election results
20. 2004 election results
21. "2005 Special Election Results" (PDF). Secretary of State of California. December 16, 2005. Retrieved September 15, 2019.
22. 2006 election results
23. 2008 election results
24. 2010 election results
25. 2012 election results
26. 2014 election results
27. 2016 election results
28. 2018 election results
29. 2020 election results
30. 2022 election results
31. See 48th congressional district, Congressional district maps for 2021 redistricting at "The Redistricting Database for the State of California".

External links

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

33°37′06″N 117°52′19″W