California 1st Congressional District (CA) — Elections 1876–2024

California 1st Congressional District, California: Republican loyalist district. In 2024, voted R+25%. Democratic peak: D+49 in 1912.

Key facts

2024 presidential margin: R+25MIT Election Lab
Political archetype: Republican loyalistAkashic typology
Population: 712,3262024 5-year
Median household income: $70,2352024 5-year
White (non-Hispanic): 66.5%2024 5-year
Black: 1.6%2024 5-year
Hispanic / Latino: 22.9%2024 5-year
Peak Democratic margin: D+49 in 1912MIT Election Lab
Peak Republican margin: R+35 in 1920MIT Election Lab

LAMALFA, DougCongress 119 · Republican

−1 liberal

+1 conservative

Predecessors: THOMPSON, Michael (2011–2013), THOMPSON, Michael (2009–2011), THOMPSON, Michael (2007–2009), THOMPSON, Michael (2005–2007)

Source · Voteview / Lewis, Poole, Rosenthal et al. (CC-BY).

2024 results by constituent county

10 counties · 0 D · 10 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	−25.2%	112,599	191,572	312,940
2020	R	−19.2%	131,328	195,560	335,190
2016	R	−21.5%	102,250	165,599	294,043
2012	R	−18.0%	108,813	158,759	277,688
2008	R	−14.1%	123,461	165,373	297,013
2004	R	−26.3%	102,773	177,940	285,463
2000	R	−28.5%	82,589	154,183	251,462
1996	R	−16.4%	85,679	124,928	239,412
1992	R	−4.8%	88,861	101,131	255,532
1988	R	−18.3%	85,166	124,003	212,787
1984	R	−28.8%	74,241	135,796	213,603
1980	R	−27.8%	59,810	113,756	194,033
1976	R	−2.0%	77,781	81,041	164,570
1972	R	−13.7%	62,895	84,305	155,852
1968	R	−10.3%	52,738	66,372	132,352
1964	D	+16.3%	77,669	55,909	133,686
1960	R	−1.2%	60,386	61,863	122,898
1956	R	−6.2%	50,489	57,173	108,112
1952	R	−20.2%	41,344	62,525	104,634
1948	D	+4.5%	41,290	37,644	81,910
1944	D	+10.8%	37,499	30,145	67,959
1940	D	+23.4%	48,658	30,012	79,552
1936	D	+38.0%	43,842	19,389	64,280
1932	D	+39.2%	38,914	16,266	57,717
1928	R	−17.8%	17,968	25,891	44,464
1924	O	−30.6%	5,057	17,239	39,751
1920	R	−35.1%	9,708	21,505	33,627
1916	D	+16.5%	22,190	15,442	40,874
1912	O	+49.1%	16,244	0	33,052
1908	R	−8.2%	9,726	11,668	23,769
1904	R	−21.4%	7,501	12,063	21,312
1900	R	−0.3%	10,376	10,430	21,364
1896	D	+12.1%	11,124	8,674	20,215
1892	D	+5.1%	10,147	9,072	21,224
1888	D	+5.8%	10,641	9,449	20,556
1884	D	+4.9%	9,126	8,245	17,837
1880	D	+6.6%	7,917	6,926	14,957
1876	D	+7.1%	6,712	5,819	12,492

Congressional elections · 17 Senate races

U.S. Senate

Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year	Won	D %	R %	Total
2024	D	58.9%	41.1%	15,348,846
2022	D	61.1%	38.9%	10,843,650
2018	D	100.0%	0.0%	11,113,364
2016	D	100.0%	0.0%	12,244,170
2012	D	62.5%	37.5%	12,578,511
2010	D	52.2%	42.2%	10,000,160
2006	D	59.4%	35.0%	8,541,476
2004	D	57.7%	37.8%	12,053,295
2000	D	55.8%	36.6%	10,623,608
1998	D	53.1%	43.0%	8,311,905
1994	D	46.7%	44.8%	8,514,089
1992	D	47.9%	43.0%	10,799,703
1988	R	44.0%	52.8%	9,743,598
1986	D	49.3%	47.9%	7,398,462
1982	R	44.8%	51.5%	7,805,450
1980	D	56.5%	37.1%	8,324,012
1976	R	46.9%	50.2%	7,470,586

Demographics

Race, ethnicity, and ancestry

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

German

12.0%

English

11.7%

Irish

10.0%

American

5.2%

Italian

4.4%

Scottish

2.3%

French

2.1%

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: 38.8 in this county, 39.1 nationally

Male

Age

Female

0.8%

85+

1.2%

2.7%

75–84

3.2%

5.5%

65–74

6.0%

55–64

6.3%

5.5%

45–54

5.3%

6.5%

35–44

6.0%

6.8%

25–34

6.1%

5.1%

18–24

4.7%

8.7%

5–17

8.1%

2.8%

2.7%

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

Median household income

2024 inflation-adjusted dollars

$70,235

Congressional District 1 ranks near the middle of US counties.

Congressional District 1$70,235

California$99,122

United States$80,734

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

Poverty rate

All persons below federal poverty line

15.7%

Children face moderate poverty.

Children under 1818.6%

Working age (18–64)15.1%

Seniors (65+)12.3%

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

Language at home

Population aged 5 and older

80.4%

speak English only

Spanish13.6%

Other Indo-European3.2%

Asian & Pacific Islander2.4%

Other languages0.3%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Other Christian

15.1%

Catholic & Orthodox

13.4%

Pentecostal & Holiness

3.1%

Mainline Protestant

1.2%

Baptist

1.0%

Methodist

0.7%

Non-Christian

0.6%

Source · 2020 US Religion Census. Remaining 64.9% of residents not counted as adherents by any reporting body.

Spanning rugged terrain from the Oregon border to the Sierra Nevada foothills, CA-01 has delivered double-digit Republican presidential margins for over a decade, driven by a predominantly rural, non-Hispanic white electorate concentrated in small timber and agricultural communities.

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

Its loyalty is rooted in its place. Median household income of $70,235, a 67% non-Hispanic-white share, and a population of 712,326 together describe a district whose political habits are deeply settled.

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.

Congressional District 1, California. Akashic. https://akashic.app/cd/0601/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did Congressional District 1, California vote in 2024?

In 2024, Congressional District 1, California voted Republican by 25.2 points (R+25), carried by the Republican candidate. Out of 312,940 votes cast, 112,599 went Democratic and 191,572 went Republican.

What is Congressional District 1, California's political archetype?

Akashic classifies Congressional 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 13 times, Republican 23 times, and other 2 times.

When did Congressional District 1, California last vote Democratic?

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

How many people live in Congressional District 1, California?

Congressional District 1, California has a population of 712,326 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

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

Median household income in Congressional District 1, California is $70,235 — below the national median of $80,734. The California state median is $99,122.

What is the political history of Congressional District 1, California?

Akashic tracks 38 presidential elections in Congressional District 1, California from 1876 to 2024. Of those, 13 went Democratic and 23 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.

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

Key facts

U.S. Senate

Demographics

Compare two places, side by side

Frequently asked questions