Congressional District 15 Congressional District (CA) — Elections 1876–2024

California 15th Congressional District, California: Democratic loyalist district. In 2024, voted D+55%. Democratic peak: D+64 in 2016.

Key facts

2024 presidential margin: D+55MIT Election Lab
Political archetype: Democratic loyalistAkashic typology
Population: 280,6782024 5-year
Median household income: $152,9212024 5-year
White (non-Hispanic): 38.2%2024 5-year
Black: 3.1%2024 5-year
Hispanic / Latino: 22.0%2024 5-year
Peak Democratic margin: D+64 in 2016MIT Election Lab
Peak Republican margin: R+44 in 1920MIT Election Lab

2024 results by constituent county

3 counties · 3 D · 0 R

R+60

D+60

One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.

38 presidential elections

Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Margin	Democratic	Republican	Total
2024	D	+55.4%	97,694	26,378	128,720
2020	D	+62.8%	116,063	25,425	144,307
2016	D	+63.8%	98,808	18,863	125,254
2012	D	+55.2%	85,911	23,662	112,769
2008	D	+56.5%	92,439	24,829	119,676
2004	D	+50.1%	83,293	27,146	112,065
2000	D	+42.6%	69,228	26,063	101,407
1996	D	+39.9%	62,010	23,673	96,121
1992	D	+36.3%	63,868	25,402	106,001
1988	D	+23.8%	58,486	35,737	95,409
1984	D	+8.5%	52,570	44,274	98,037
1980	R	−1.7%	37,004	38,513	88,785
1976	R	−0.3%	40,997	41,262	87,364
1972	R	−1.6%	46,894	48,500	98,939
1968	D	+11.7%	46,823	36,250	90,659
1964	D	+34.2%	61,501	30,116	91,710
1960	D	+4.8%	46,725	42,460	89,484
1956	R	−13.3%	34,223	44,755	79,206
1952	R	−15.5%	31,598	43,324	75,548
1948	R	−4.7%	27,458	30,319	61,134
1944	D	+15.4%	32,139	23,535	55,934
1940	D	+16.0%	28,356	20,440	49,371
1936	D	+45.0%	28,850	10,788	40,145
1932	D	+29.0%	21,002	11,265	33,595
1928	R	−3.9%	13,303	14,394	28,087
1924	R	−42.9%	1,295	10,297	20,979
1920	R	−44.2%	4,155	12,600	19,120
1916	D	+7.8%	9,907	8,392	19,360
1912	O	+48.1%	6,311	0	13,110
1908	R	−21.9%	2,717	4,446	7,894
1904	R	−34.1%	2,237	5,008	8,131
1900	R	−16.9%	3,059	4,365	7,749
1896	R	−2.6%	3,687	3,888	7,741
1892	D	+10.2%	3,737	3,014	7,098
1888	D	+4.4%	3,467	3,167	6,784
1884	R	−9.2%	2,568	3,101	5,786
1880	D	+5.2%	2,590	2,332	5,002
1876	R	−2.6%	2,464	2,595	5,059

Demographics

Race, ethnicity, and ancestry

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

Irish

6.9%

German

6.4%

English

6.1%

Italian

4.8%

American

2.5%

French

1.8%

Scottish

0.9%

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.

Age distribution by sex

Median age: 40.6 in this county, 39.1 nationally

Male

Age

Female

0.9%

85+

1.5%

2.3%

75–84

2.9%

4.7%

65–74

5.2%

6.4%

55–64

6.3%

6.8%

45–54

6.5%

7.9%

35–44

7.3%

8.5%

25–34

7.8%

3.6%

18–24

3.5%

6.6%

5–17

6.2%

2.4%

2.3%

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

Median household income

2024 inflation-adjusted dollars

$152,921

Congressional District 15 ranks near the middle of US counties.

Congressional District 15$152,921

California$99,122

United States$80,734

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

Poverty rate

All persons below federal poverty line

8.2%

Child poverty is below the national average.

Children under 187.1%

Working age (18–64)7.8%

Seniors (65+)13.5%

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

Language at home

Population aged 5 and older

54.9%

speak English only

Asian & Pacific Islander21.5%

Spanish15.4%

Other Indo-European6.9%

Other languages1.1%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

21.2%

Other Christian

4.0%

Non-Christian

3.9%

Mainline Protestant

1.6%

Baptist

1.4%

Pentecostal & Holiness

1.1%

Methodist

1.1%

Source · 2020 US Religion Census. Remaining 65.7% of residents not counted as adherents by any reporting body.

California 15th Congressional District sits in the Pacific Coast. Its political identity has been Democratic for as long as anyone now living can remember. 3 consecutive presidential elections in modern records have gone for the Democratic candidate, often by margins that would be considered landslide territory anywhere else.

The Democratic margin in California 15th Congressional District reached its widest at sixty-four points in 2016. The margin in 2024 was fifty-five points — still decisive.

Its loyalty is rooted in its place. Median household income of $152,921, a 38% non-Hispanic-white share, and a population of 280,678 together describe a district whose political habits are deeply settled.

Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

Congressional District 15, California — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/cd/0615/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did Congressional District 15, California vote in 2024?

In 2024, Congressional District 15, California voted Democratic by 55.4 points (D+55), carried by the Democratic candidate. Out of 128,720 votes cast, 97,694 went Democratic and 26,378 went Republican.

What is Congressional District 15, California's political archetype?

Akashic classifies Congressional District 15, California as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 22 times, Republican 15 times, and other 1 times.

When did Congressional District 15, California last vote Republican?

The most recent presidential election in which Congressional District 15, California voted Republican was 1980.

How many people live in Congressional District 15, California?

Congressional District 15, California has a population of 280,678 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Congressional District 15, California?

Median household income in Congressional District 15, California is $152,921 — above the national median of $80,734. The California state median is $99,122.

What is the political history of Congressional District 15, California?

Akashic tracks 38 presidential elections in Congressional District 15, California from 1876 to 2024. Of those, 22 went Democratic and 15 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.

California 15th Congressional District has voted Democratic in eleven straight presidential cycles.

Key facts

Demographics

Frequently asked questions