congressional districtCalifornia 48th Congressional District
presidential margin
2004–2024 · Democratic minus Republican
2004R+23.0
2008R+5.4
2012R+9.0
2016R+0.3
2020D+7.2
2024D+3.4
net swing · 2004→2024D+26.4R+23.0 → D+3.4
vs. U.S. · 2024D+4.9D+3.4 vs R+1.5
presidential returns
2024 turnout 62.8% of 522,219 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
165,251
154,048
8,579
327,878
522,219
62.8%
2020
179,074
154,522
7,481
341,077
515,326†
66.2%
2016
122,612
123,378
15,099
261,089
485,207†
53.8%
2012
104,901
126,116
5,852
236,869
451,787†
52.4%
2008
106,689
119,022
903
226,614
425,439†
53.3%
2004
80,847
129,801
2,544
213,192
399,091†
53.4%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
District by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupCA-48CaliforniaUnited States
German10.8%6.8%12.5%
English9.5%6.3%9.5%
Irish9.2%5.9%9.4%
Italian5.0%3.4%4.8%
American3.1%2.8%5.3%
French2.1%1.3%1.6%
Polish1.9%0.9%2.2%
Scottish1.9%0.9%1.3%
Mexican34.4%32.3%11.3%
Puerto Rican0.9%0.6%1.8%
Guatemalan0.7%1.3%0.5%
Spanish0.5%0.3%—
Salvadoran0.5%2.0%0.7%
Spaniard0.4%0.3%—
Colombian0.3%0.3%0.4%
Cuban0.2%—0.7%
Filipino2.7%3.3%0.9%
Chinese1.2%3.9%1.3%
Asian Indian0.9%2.3%1.4%
Vietnamese0.8%1.7%0.6%
Korean0.4%1.2%0.4%
Japanese0.3%0.6%0.2%
African American†3.1%4.4%9.9%
African0.3%0.3%0.5%
Jamaican0.2%—0.4%
Aztec5.7%0.3%—
Maya3.8%——
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
CA-48
California
United States
Median age
38.9
37.9
39.1
Age 18–24
9.7%
9.1%
9.2%
Age 65 and older
15.4%
15.6%
17.2%
Household economy
Measure
CA-48
California
United States
Median household income
$107,394
$99,122
$84,427
Poverty rate
9.5%
12.0%
12.5%
Bachelor's degree or higher (25+)
40.2%
36.6%
35.6%
Languages at home
Measure
CA-48
California
United States
Speaks a non-English language at home
38.2%
44.4%
22.3%
Spanish
26.0%
28.4%
13.6%
Other Indo-European
2.0%
3.4%
2.0%
Chinese (incl. Mandarin & Cantonese)
1.6%
3.5%
1.1%
Tagalog (incl. Filipino)
2.5%
2.1%
0.6%
Religious landscape
Measure
CA-48
California
United States
Catholic
—
26.2%
18.6%
Evangelical Protestant
—
9.0%
16.5%
Unclaimed / not counted
—
55.2%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
California 48th Congressional District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−23.0%
2008
−5.4%
2012
−9.0%
2016
−0.3%
2020
+7.2%
2024
+3.4%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Federal officeholders only. State and local officeholders are planned for the next data pass.
Congressional elections · 17 House races · 17 Senate races
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
Source · MIT Election Lab (MEDSL), House. CC-BY 4.0.
Year
District
Won
Democratic
Republican
Total
2024
48
R
40.7%146,665
59.3%213,625
360,290
2022
48
R
39.6%101,900
60.4%155,171
257,071
2020
48
R
48.9%193,362
51.1%201,738
395,100
2018
48
D
53.6%157,837
46.4%136,899
294,736
2016
48
R
41.7%127,715
58.3%178,701
306,416
2014
48
R
35.9%62,713
64.1%112,082
174,795
2012
48
R
39.0%113,358
61.0%177,144
290,502
2010
48
R
36.4%88,465
59.9%145,481
242,719
2008
48
R
40.7%125,537
55.6%171,658
308,702
2006
48
R
37.2%74,647
59.9%120,130
200,527
2004
48
R
32.2%93,525
65.0%189,004
290,872
2002
48
R
28.4%51,058
68.4%122,884
179,549
2000
48
R
28.3%74,073
61.4%160,627
261,478
1998
48
R
0.0%0
76.9%138,948
180,719
1996
48
R
26.9%59,558
65.9%145,814
221,391
1994
48
R
22.2%43,523
73.4%143,570
195,636
1992
48
R
29.2%67,415
61.1%140,935
230,495
U.S. Senate
The statewide Senate race, counted in this district — aggregated from the precinct-level returns that fall inside its boundaries (not a statewide figure).
Votes · MIT Election Lab (MEDSL) precinct returns (CC BY 4.0); aggregated to the district over VEST precinct geometry (CC BY-NC 4.0).
Year
Won
Democratic
Republican
Total
2024
D
50.2%162,137
49.8%160,913
323,050
2022
D
61.1%6,621,621
38.9%4,222,029
10,843,650
2018
D
100.0%11,113,364
0.0%0
11,113,364
2016
D
100.0%12,244,170
0.0%0
12,244,170
2012
D
62.5%7,864,624
37.5%4,713,887
12,578,511
2010
D
52.2%5,218,441
42.2%4,217,366
10,000,093
2006
D
59.4%5,076,289
35.0%2,990,822
8,541,150
2004
D
57.7%6,955,728
37.8%4,555,922
12,053,242
2000
D
55.8%5,932,522
36.6%3,886,853
10,623,608
1998
D
53.1%4,410,056
43.0%3,575,078
8,311,905
1994
D
46.7%3,979,152
44.8%3,817,025
8,513,916
1992
D
47.9%5,173,467
43.0%4,644,182
10,799,436
1988
R
44.0%4,287,253
52.8%5,143,409
9,743,547
1986
D
49.3%3,646,672
47.9%3,541,804
7,398,462
1982
R
44.8%3,494,968
51.5%4,022,565
7,805,450
1980
D
56.5%4,704,098
37.1%3,091,671
8,324,012
1976
R
46.9%3,502,862
50.2%3,748,973
7,470,586
2024 U.S. Senate — every candidate counted in this district
Adam B Schiff · Democrat50.2%162,137
Steve Garvey · Republican49.8%160,913
CA-48 spans affluent beach cities from Huntington to Laguna Niguel, where college-educated suburban voters have made a once-safe Republican stronghold competitive — the 2024 presidential margin of R+3.6 reflects a district still moving.
Across the recorded series it reached a Democratic high of 7.2 points in 2020 and a Republican high of 23.0 points in 2004. Between 2020 and 2024 the district moved 3.8 points toward the Republican candidate; the 2024 margin was 3.4 points.
A population of 757,563, a 43% non-Hispanic-white share, and a median household income of $107,394 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 49 and Congressional District 50.
Akashic
Political twins — districts
The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
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California 48th Congressional District. Akashic. https://akashic.app/cd/0648/. Accessed May 20, 2026. License: CC BY 4.0.
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How did California 48th Congressional District vote in 2024?
In 2024, California 48th Congressional District voted Democratic by 3.4 points (D+3.4), carried by the Democratic candidate. Out of 327,878 votes cast, 165,251 went Democratic and 154,048 went Republican.
When did California 48th Congressional District last vote Republican?
The most recent presidential election in which California 48th Congressional District voted Republican was 2016.
How many people live in California 48th Congressional District?
California 48th Congressional District has a population of 757,563 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in California 48th Congressional District?
Median household income in California 48th Congressional District is $107,394 — above the national median of $80,734. The California state median is $99,122.
What is the political history of California 48th Congressional District?
Akashic tracks 6 presidential elections in California 48th Congressional District from 2004 to 2024. Of those, 2 went Democratic and 4 went Republican.
