akashic
1876–2024
San Diego·California

San Diego moved 6 points toward the Republican candidate between 2020 and 2024.

A coastal mega-market where suburban swing voters dominate outcomes

18762024·38 elections
CA
LatestD+17in 2024
TypologyNew Americancluster typology
Population3,288,7742024 ACS

San Diego, California: New American market. In 2024, voted D+17%. Democratic peak: D+45 in 1912.

Key facts

2024 presidential margin
D+17MIT Election Lab
Political typology
New AmericanAkashic typology
Population
3,288,7742024 5-year
Median household income
$106,2682024 5-year
White (non-Hispanic)
48.4%2024 5-year
Black
4.7%2024 5-year
Hispanic / Latino
34.6%2024 5-year
Peak Democratic margin
D+45 in 1912MIT Election Lab
Peak Republican margin
R+43 in 1924MIT Election Lab
San Diego
HarrisD+17
How it voted
Share of the 2024 vote
Kamala HarrisDemocratic56.9%841,372
Donald TrumpRepublican40.1%593,270
OtherAll other candidates2.9%43,386
D+60
R+60
1 counties, each filled by 2024 D-vs-R margin.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 1876 to 2024. Most recent: +16.8% in 2024.flipped D · 2008+16.8%DR18762024
Presidential margin over time
YearMargin (D minus R)
1876−8.6%
1880−15.1%
1884−16.3%
1888−18.0%
1892−15.4%
1896+3.6%
1900−16.2%
1904−40.2%
1908−32.1%
1912+44.8%
1916−0.4%
1920−36.5%
1924−42.6%
1928−35.2%
1932+12.1%
1936+28.4%
1940+12.3%
1944+8.5%
1948−1.6%
1952−26.3%
1956−29.3%
1960−13.1%
1964−0.6%
1968−20.2%
1972−27.5%
1976−14.1%
1980−33.5%
1984−31.9%
1988−21.8%
1992+1.5%
1996−1.5%
2000−4.0%
2004−6.1%
2008+10.2%
2012+7.6%
2016+19.6%
2020+22.8%
2024+16.8%
DemocraticRepublican
Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonMarginDemocraticRepublicanTotal
D
+16.8%
841,372593,2701,478,028
D
+22.8%
964,650600,0941,602,143
D
+19.6%
735,476477,7661,311,618
D
+7.6%
626,957536,7261,193,949
D
+10.2%
666,581541,0321,235,503
R
−6.1%
526,437596,0331,136,351
R
−4.0%
437,666475,736958,634
R
−1.5%
389,964402,876884,151
D
+1.5%
367,397352,125986,646
R
−21.8%
333,264523,143869,195
R
−31.9%
257,029502,344769,267
R
−33.5%
195,410435,910716,866
R
−14.1%
263,654353,302633,795
R
−27.5%
206,455371,627601,137
R
−20.2%
167,669261,540464,863
R
−0.6%
211,808214,445426,286
R
−13.1%
171,259223,056395,421
R
−29.3%
106,716195,742303,605
R
−26.3%
101,880175,281278,751
R
−1.6%
98,217101,552205,459
D
+8.5%
89,95975,746166,764
D
+12.3%
71,18855,434128,110
D
+28.4%
64,62835,686101,854
D
+12.1%
45,62235,30585,150
R
−35.2%
22,74947,76971,151
R
−42.6%
2,94422,72646,391
R
−36.5%
8,47819,82631,087
R
−0.4%
16,81516,97836,537
O
+44.8%
9,731021,728
R
−32.1%
2,3935,4129,403
R
−40.2%
1,3984,3037,230
R
−16.2%
2,6783,8006,921
D
+3.6%
3,9083,6317,748
R
−15.4%
2,3343,5257,712
R
−18.0%
3,1894,6618,194
R
−16.3%
8001,1201,965
R
−15.1%
5467431,308
R
−8.6%
6687941,462

Demographics

2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
9.1%
English
8.0%
Irish
7.8%
Italian
4.2%
American
2.5%
French
1.8%
Polish
1.6%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Language at home
Population aged 5 and older
62.7%
speak English only
Spanish24.1%
Asian & Pacific Islander7.8%
Other Indo-European3.7%
Other languages1.7%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Catholic & Orthodox
23.2%
Other Christian
10.1%
Non-Christian
3.1%
Pentecostal & Holiness
1.5%
Mainline Protestant
1.5%
Baptist
1.4%
Methodist
0.6%
Source · 2020 US Religion Census. Remaining 58.6% of residents not counted as adherents by any reporting body.

San Diego's media market spans a dense military and tech workforce alongside fast-growing inland suburbs, producing competitive margins in federal and statewide races even as registration trends Democratic by roughly 10 points.

Across the recorded series it reached a Democratic high of forty-five points in 1912 and a Republican high of forty-three points in 1924. Between 2020 and 2024 the market moved six points toward the Republican candidate; the 2024 margin was seventeen points.

A population of 3,288,774, a 48% non-Hispanic-white share, and a median household income of $106,268 describe the market.

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 →

Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
San Diego, California. Akashic. https://akashic.app/dma/825/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did San Diego, California vote in 2024?
In 2024, San Diego, California voted Democratic by 16.8 points (D+17), carried by the Democratic candidate. Out of 1,478,028 votes cast, 841,372 went Democratic and 593,270 went Republican.
What is San Diego, California's political typology?
Akashic places San Diego, California in the "New American" typology. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the market has voted Democratic 11 times, Republican 26 times, and other 1 times.
When did San Diego, California last vote Republican?
The most recent presidential election in which San Diego, California voted Republican was 2004.
How many people live in San Diego, California?
San Diego, California has a population of 3,288,774 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in San Diego, California?
Median household income in San Diego, California is $106,268 — above the national median of $80,734. The California state median is $99,122.
What is the political history of San Diego, California?
Akashic tracks 38 presidential elections in San Diego, California from 1876 to 2024. Of those, 11 went Democratic and 26 went Republican. The market's typology — "New American" — captures where that record, its demographics, and its recent swing place it among American communities.