Assembly District 15 State House District (CA) — Elections 1876–2024

California 15th State House District, California: Urban anchor district. In 2024, voted D+38%. Republican peak: R+48 in 1924.

Key facts

2024 presidential margin: D+38MIT Election Lab
Political archetype: Urban anchorAkashic typology
Population: 531,2412024 5-year
Median household income: $127,2292024 5-year
White (non-Hispanic): 41.1%2024 5-year
Black: 8.3%2024 5-year
Hispanic / Latino: 27.6%2024 5-year
Peak Democratic margin: D+46 in 1936MIT Election Lab
Peak Republican margin: R+48 in 1924MIT Election Lab

2024 results by constituent county

1 counties · 1 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	+37.9%	162,338	70,820	241,178
2020	D	+45.3%	189,870	69,711	265,078
2016	D	+43.0%	145,594	52,875	215,693
2012	D	+35.1%	132,615	62,251	200,248
2008	D	+37.6%	139,983	62,214	206,677
2004	D	+25.8%	117,307	68,677	188,339
2000	D	+21.7%	102,297	64,466	173,952
1996	D	+20.6%	89,609	56,523	160,785
1992	D	+21.4%	88,901	51,512	174,566
1988	D	+3.2%	77,251	72,345	151,168
1984	R	−9.9%	64,293	78,582	144,240
1980	R	−12.8%	48,973	65,715	131,119
1976	R	−1.1%	56,426	57,728	116,979
1972	R	−10.6%	50,943	63,404	117,138
1968	D	+1.9%	46,360	44,453	99,825
1964	D	+27.0%	51,560	29,645	81,279
1960	D	+6.0%	42,691	37,812	80,767
1956	R	−2.2%	32,710	34,186	67,055
1952	D	+1.2%	31,491	30,758	62,600
1948	D	+14.6%	22,926	16,853	41,667
1944	D	+28.1%	21,811	12,228	34,102
1940	D	+24.5%	14,090	8,494	22,818
1936	D	+45.6%	11,859	4,379	16,404
1932	D	+21.6%	7,851	4,974	13,321
1928	R	−22.0%	3,909	6,154	10,191
1924	R	−48.0%	508	4,132	7,557
1920	R	−39.2%	1,588	4,123	6,467
1916	D	+2.8%	2,778	2,613	5,933
1912	O	+39.4%	1,500	0	3,808
1908	R	−31.6%	729	1,521	2,510
1904	R	−34.8%	573	1,292	2,065
1900	R	−16.2%	706	987	1,731
1896	R	−13.8%	630	836	1,491
1892	R	−9.5%	607	744	1,436
1888	R	−12.3%	537	692	1,258
1884	R	−14.3%	508	682	1,221
1880	R	−12.6%	461	594	1,054
1876	R	−17.1%	382	540	922

Demographics

Race, ethnicity, and ancestry

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

German

8.0%

English

8.0%

Irish

7.3%

Italian

4.7%

American

2.2%

French

1.5%

Scottish

1.5%

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: 40.5 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.3%

2.3%

75–84

2.9%

4.6%

65–74

5.3%

6.4%

55–64

6.6%

6.7%

45–54

6.8%

7.0%

35–44

7.1%

6.1%

25–34

6.1%

4.1%

18–24

3.9%

8.5%

5–17

8.2%

2.7%

2.6%

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

Median household income

2024 inflation-adjusted dollars

$127,229

Assembly District 15 ranks near the middle of US counties.

Assembly District 15$127,229

California$99,122

United States$80,734

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

Poverty rate

All persons below federal poverty line

8.4%

Child poverty is below the national average.

Children under 1810.0%

Working age (18–64)7.8%

Seniors (65+)8.4%

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

Language at home

Population aged 5 and older

62.5%

speak English only

Spanish19.1%

Asian & Pacific Islander10.5%

Other Indo-European6.6%

Other languages1.4%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

27.0%

Other Christian

5.9%

Non-Christian

2.8%

Baptist

2.3%

Pentecostal & Holiness

1.7%

Mainline Protestant

1.2%

Methodist

0.6%

Source · 2020 US Religion Census. Remaining 58.5% of residents not counted as adherents by any reporting body.

Anchored in the Inland Empire's eastern reaches, AD-15 posts some of the largest Republican presidential margins in California, reflecting a working-class exurban base where cost-of-living pressures and slower demographic shifts diverge sharply from coastal districts.

The Democratic margin in California 15th State House District has been steady. It reached its modern peak at forty-six points in 1936; the 2024 margin was thirty-eight points, still in line with the district's long pattern.

Its political identity is inseparable from its demographic profile: a 41% non-Hispanic-white share, a median household income of $127,229, and the full diversity of a major metropolitan center.

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Cite this page

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

Assembly District 15, California. Akashic. https://akashic.app/sld-lower/06015/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did Assembly District 15, California vote in 2024?

In 2024, Assembly District 15, California voted Democratic by 37.9 points (D+38), carried by the Democratic candidate. Out of 241,178 votes cast, 162,338 went Democratic and 70,820 went Republican.

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

Akashic classifies Assembly District 15, California as a "Urban anchor" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 20 times, Republican 17 times, and other 1 times.

When did Assembly District 15, California last vote Republican?

The most recent presidential election in which Assembly District 15, California voted Republican was 1984.

How many people live in Assembly District 15, California?

Assembly District 15, California has a population of 531,241 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

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

Median household income in Assembly District 15, California is $127,229 — above the national median of $80,734. The California state median is $99,122.

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

Akashic tracks 38 presidential elections in Assembly District 15, California from 1876 to 2024. Of those, 20 went Democratic and 17 went Republican. The district's archetype — "Urban anchor" — captures the overall trajectory of that voting record.

California 15th State House District has voted Democratic by double digits in every cycle this century.

Key facts

Demographics

Compare two places, side by side

Frequently asked questions