San Diego County, California

2024 results by precinct

1,746 precincts · 1,478,028 votes cast

Harris · D+17

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	D	+16.8%	841,372	593,270	1,478,028
2020	D	+22.8%	964,650	600,094	1,602,143
2016	D	+19.6%	735,476	477,766	1,311,618
2012	D	+7.6%	626,957	536,726	1,193,949
2008	D	+10.2%	666,581	541,032	1,235,503
2004	R	−6.1%	526,437	596,033	1,136,351
2000	R	−4.0%	437,666	475,736	958,634
1996	R	−1.5%	389,964	402,876	884,151
1992	D	+1.5%	367,397	352,125	986,646
1988	R	−21.8%	333,264	523,143	869,195
1984	R	−31.9%	257,029	502,344	769,267
1980	R	−33.5%	195,410	435,910	716,866
1976	R	−14.1%	263,654	353,302	633,795
1972	R	−27.5%	206,455	371,627	601,137
1968	R	−20.2%	167,669	261,540	464,863
1964	R	−0.6%	211,808	214,445	426,286
1960	R	−13.1%	171,259	223,056	395,421
1956	R	−29.3%	106,716	195,742	303,605
1952	R	−26.3%	101,880	175,281	278,751
1948	R	−1.6%	98,217	101,552	205,459
1944	D	+8.5%	89,959	75,746	166,764
1940	D	+12.3%	71,188	55,434	128,110
1936	D	+28.4%	64,628	35,686	101,854
1932	D	+12.1%	45,622	35,305	85,150
1928	R	−35.2%	22,749	47,769	71,151
1924	R	−42.6%	2,944	22,726	46,391
1920	R	−36.5%	8,478	19,826	31,087
1916	R	−0.4%	16,815	16,978	36,537
1912	D	+44.8%	9,731	0	21,728
1908	R	−32.1%	2,393	5,412	9,403
1904	R	−40.2%	1,398	4,303	7,230
1900	R	−16.2%	2,678	3,800	6,921
1896	D	+3.6%	3,908	3,631	7,748
1892	R	−15.4%	2,334	3,525	7,712
1888	R	−18.0%	3,189	4,661	8,194
1884	R	−16.3%	800	1,120	1,965
1880	R	−15.1%	546	743	1,308
1876	R	−8.6%	668	794	1,462

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

American

100.0%

African American

3.8%

Multiple ancestry combinations reported; no single grouping above 1%.

American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.

Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

Age distribution by sex

Median age: 37.3 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.1%

2.0%

75–84

2.5%

4.3%

65–74

4.8%

5.8%

55–64

5.9%

6.1%

45–54

6.0%

7.4%

35–44

6.9%

8.3%

25–34

7.6%

5.3%

18–24

4.5%

7.9%

5–17

7.5%

2.9%

2.7%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$106,268

San Diego County ranks in the top 5% of US counties.

San Diego County$106,268

California$99,122

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

10.3%

Children face moderate poverty.

Children under 1818.0%

Working age (18–64)100.0%

Seniors (65+)18.0%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

0.0%

speak English only

Source · ACS 5-year estimates, 2024.

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 County's political center of gravity has shifted steadily leftward over two decades, driven by a growing Latino population and college-educated suburban voters in communities like Chula Vista and Carlsbad. The 2024 margin of D+16.8 marks its widest Democratic spread yet.

The 2008 election was the turning point, when the Democratic candidate carried the county by ten points. The 2024 margin was seventeen points, in line with the county's new direction.

The demographics suggest why. A population of 3,288,774, a 48% non-Hispanic-white share, and a median household income of $106,268 situate the county in the broader realignment patterns of recent cycles. The county's voting pattern over the last decade is most similar to that of Ventura County and Arapahoe County.

Most similar counties

San Diego County changed direction in the last decade.