State Senate District 1 State Senate District (CA) — Elections 1876–2024

California 1st State Senate District, California: Republican loyalist district. In 2024, voted R+18%. Democratic peak: D+48 in 1912.

Key facts

2024 presidential margin: R+18MIT Election Lab
Political archetype: Republican loyalistAkashic typology
Population: 1,009,8612024 5-year
Median household income: $77,8602024 5-year
White (non-Hispanic): 68.1%2024 5-year
Black: 1.7%2024 5-year
Hispanic / Latino: 21.1%2024 5-year
Peak Democratic margin: D+48 in 1912MIT Election Lab
Peak Republican margin: R+36 in 1920MIT Election Lab

2024 results by constituent county

14 counties · 1 D · 13 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	R	−18.1%	186,254	271,460	471,502
2020	R	−13.4%	209,199	275,818	497,845
2016	R	−17.1%	157,331	230,508	426,712
2012	R	−16.1%	161,141	225,561	401,104
2008	R	−11.4%	183,449	232,195	427,002
2004	R	−24.4%	150,119	249,059	405,667
2000	R	−26.5%	119,164	212,931	353,177
1996	R	−16.0%	118,230	170,921	329,135
1992	R	−5.0%	120,532	137,724	346,630
1988	R	−18.0%	115,879	167,734	288,474
1984	R	−28.0%	99,137	178,306	282,431
1980	R	−26.8%	78,849	146,593	253,001
1976	R	−0.6%	99,980	101,266	208,589
1972	R	−13.0%	79,875	105,300	195,902
1968	R	−8.6%	67,702	81,969	166,283
1964	D	+17.8%	98,437	68,717	167,306
1960	R	−0.2%	75,908	76,179	152,931
1956	R	−5.8%	63,328	71,100	134,969
1952	R	−18.6%	53,440	78,051	132,494
1948	D	+6.0%	53,770	47,456	105,367
1944	D	+13.0%	48,144	37,036	85,581
1940	D	+26.2%	64,164	37,289	102,605
1936	D	+40.9%	57,626	23,781	82,706
1932	D	+39.6%	49,006	20,315	72,372
1928	R	−14.3%	23,732	31,776	56,265
1924	O	−30.7%	6,005	21,320	49,853
1920	R	−36.1%	11,897	27,150	42,209
1916	D	+17.2%	28,524	19,564	52,082
1912	O	+48.2%	20,608	0	42,790
1908	R	−10.0%	12,858	16,042	31,965
1904	R	−23.9%	10,042	17,099	29,467
1900	R	−4.7%	14,021	15,446	30,253
1896	D	+7.9%	15,603	13,284	29,466
1892	D	+2.0%	14,002	13,386	30,304
1888	D	+1.8%	14,944	14,407	30,039
1884	R	−1.9%	13,051	13,568	27,222
1880	D	+1.0%	12,236	11,985	24,391
1876	R	−0.8%	10,607	10,788	21,356

Demographics

Race, ethnicity, and ancestry

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

German

12.5%

English

12.3%

Irish

10.3%

Italian

4.9%

American

4.6%

Scottish

2.3%

French

2.2%

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: 40.3 in this county, 39.1 nationally

Male

Age

Female

0.9%

85+

1.3%

2.8%

75–84

3.3%

5.7%

65–74

6.3%

6.2%

55–64

6.5%

5.6%

45–54

5.4%

6.5%

35–44

6.2%

6.4%

25–34

6.0%

4.7%

18–24

4.3%

8.5%

5–17

8.0%

2.8%

2.6%

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

Median household income

2024 inflation-adjusted dollars

$77,860

State Senate District 1 ranks near the middle of US counties.

State Senate District 1$77,860

California$99,122

United States$80,734

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

Poverty rate

All persons below federal poverty line

14.0%

Children face moderate poverty.

Children under 1816.3%

Working age (18–64)13.5%

Seniors (65+)11.4%

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

Language at home

Population aged 5 and older

81.7%

speak English only

Spanish12.0%

Other Indo-European3.2%

Asian & Pacific Islander2.6%

Other languages0.4%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Other Christian

14.9%

Catholic & Orthodox

13.4%

Pentecostal & Holiness

2.7%

Mainline Protestant

1.2%

Non-Christian

1.1%

Baptist

1.0%

Methodist

0.7%

Source · 2020 US Religion Census. Remaining 65.1% of residents not counted as adherents by any reporting body.

Anchored in the North Bay and coastal Northern California, this district recorded a 53.5-point Democratic presidential margin in 2024, placing it among the state's most reliably one-sided legislative constituencies.

The Republican margin in California 1st State Senate District reached its widest at thirty-six points in 1920. The margin in 2024 was eighteen points, in line with the district's deep historical pattern.

Its loyalty is rooted in its place. Median household income of $77,860, a 68% non-Hispanic-white share, and a population of 1,009,861 together describe a district whose political habits are deeply settled.

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Cite this page

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

State Senate District 1, California. Akashic. https://akashic.app/sld-upper/06001/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did State Senate District 1, California vote in 2024?

In 2024, State Senate District 1, California voted Republican by 18.1 points (R+18), carried by the Republican candidate. Out of 471,502 votes cast, 186,254 went Democratic and 271,460 went Republican.

What is State Senate District 1, California's political archetype?

Akashic classifies State Senate District 1, California as a "Republican loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 11 times, Republican 25 times, and other 2 times.

When did State Senate District 1, California last vote Democratic?

The most recent presidential election in which State Senate District 1, California voted Democratic was 1964.

How many people live in State Senate District 1, California?

State Senate District 1, California has a population of 1,009,861 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in State Senate District 1, California?

Median household income in State Senate District 1, California is $77,860 — below the national median of $80,734. The California state median is $99,122.

What is the political history of State Senate District 1, California?

Akashic tracks 38 presidential elections in State Senate District 1, California from 1876 to 2024. Of those, 11 went Democratic and 25 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.

California 1st State Senate District has voted Republican in fifteen straight presidential cycles.

Key facts

Demographics

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Frequently asked questions