congressional districtCalifornia 1st Congressional District
presidential margin
2004–2024 · Democratic minus Republican
2004D+6.7
2008D+19.6
2012D+15.4
2016D+13.7
2020D+17.8
2024D+12.2
net swing · 2004→2024D+5.6D+6.7 → D+12.2
vs. U.S. · 2024D+13.7D+12.2 vs R+1.5
presidential returns
2024 turnout 61.5% of 546,298 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
182,913
141,857
10,941
335,711
546,298
61.5%
2020
212,717
146,896
9,546
369,159
561,703†
65.7%
2016
170,379
126,453
24,699
321,531
556,578†
57.8%
2012
171,887
124,317
12,643
308,847
545,863†
56.6%
2008
192,816
129,268
1,952
324,036
529,756†
61.2%
2004
168,748
147,303
6,301
322,352
513,649†
62.8%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
District by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupCA-1CaliforniaUnited States
German13.3%6.8%12.5%
English12.6%6.3%9.5%
Irish11.7%5.9%9.4%
Italian5.9%3.4%4.8%
American4.3%2.8%5.3%
Scottish2.6%0.9%1.3%
French2.4%1.3%1.6%
Norwegian0.7%——
Mexican21.7%32.3%11.3%
Spanish0.7%0.3%—
Spaniard0.5%0.3%—
Salvadoran0.5%2.0%0.7%
Puerto Rican0.4%0.6%1.8%
Guatemalan0.2%1.3%0.5%
Hmong0.9%0.3%—
Filipino0.6%3.3%0.9%
Chinese0.6%3.9%1.3%
Vietnamese0.4%1.7%0.6%
Asian Indian0.3%2.3%1.4%
Aztec1.7%0.3%—
African American†1.3%4.4%9.9%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
CA-1
California
United States
Median age
40.4
37.9
39.1
Age 18–24
9.7%
9.1%
9.2%
Age 65 and older
20.7%
15.6%
17.2%
Household economy
Measure
CA-1
California
United States
Median household income
$86,090
$99,122
$84,427
Poverty rate
13.2%
12.0%
12.5%
Bachelor's degree or higher (25+)
28.9%
36.6%
35.6%
Languages at home
Measure
CA-1
California
United States
Speaks a non-English language at home
21.6%
44.4%
22.3%
Spanish
17.0%
28.4%
13.6%
Other Asian & Pacific Island
1.2%
2.0%
1.1%
Religious landscape
Measure
CA-1
California
United States
Catholic
—
26.2%
18.6%
Evangelical Protestant
—
9.0%
16.5%
Unclaimed / not counted
—
55.2%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
California 1st Congressional District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+6.7%
2008
+19.6%
2012
+15.4%
2016
+13.7%
2020
+17.8%
2024
+12.2%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Federal officeholders only. State and local officeholders are planned for the next data pass.
Congressional elections · 25 House races
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
Source · MIT Election Lab (MEDSL), House. CC-BY 4.0.
Year
District
Won
Democratic
Republican
Total
2024
1
R
34.7%110,636
65.3%208,592
319,228
2022
1
R
37.9%93,386
62.1%152,839
246,225
2020
1
R
43.0%154,073
57.0%204,190
358,263
2018
1
R
45.1%131,548
54.9%160,046
291,594
2016
1
R
40.9%128,588
59.1%185,448
314,036
2014
1
R
39.0%84,320
61.0%132,052
216,372
2012
1
R
42.6%125,386
57.4%168,827
294,213
2010
1
D
62.8%147,307
31.0%72,803
234,592
2008
1
D
68.1%197,812
23.4%67,853
290,472
2006
1
D
66.2%144,409
29.0%63,194
218,044
2004
1
D
66.9%189,366
28.3%79,970
282,971
2002
1
D
64.1%118,669
32.4%60,013
185,216
2000
1
D
65.0%155,638
28.0%66,987
239,335
1998
1
D
61.8%121,713
32.9%64,692
196,805
1996
1
R
43.5%96,522
49.6%110,243
222,119
1994
1
R
46.7%93,717
53.3%106,870
200,673
1992
1
D
47.6%119,676
45.1%113,266
251,206
1990
1
R
41.9%96,468
43.3%99,782
230,261
1988
1
D
62.9%159,815
28.4%72,189
254,154
1986
1
D
67.5%138,174
26.6%54,436
204,759
1984
1
D
62.3%157,037
37.7%95,186
252,223
1982
1
D
49.8%107,749
47.2%102,043
216,166
1980
1
R
39.9%107,682
53.7%145,098
270,199
1978
1
D
59.4%125,122
40.6%85,690
210,812
1976
1
D
73.9%160,477
26.1%56,539
217,016
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.
Across the recorded series it reached a Democratic high of 19.6 points in 2008. Between 2020 and 2024 the district moved 5.6 points toward the Republican candidate; the 2024 margin was 12.2 points.
A population of 765,064, a 60% non-Hispanic-white share, and a median household income of $86,090 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 2 and Congressional District 4.
Akashic
Political twins — districts
The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
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 →
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California 1st Congressional District. Akashic. https://akashic.app/cd/0601/. Accessed May 20, 2026. License: CC BY 4.0.
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How did California 1st Congressional District vote in 2024?
In 2024, California 1st Congressional District voted Democratic by 12.2 points (D+12.2), carried by the Democratic candidate. Out of 335,711 votes cast, 182,913 went Democratic and 141,857 went Republican.
How many people live in California 1st Congressional District?
California 1st Congressional District has a population of 765,064 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in California 1st Congressional District?
Median household income in California 1st Congressional District is $86,090 — above the national median of $80,734. The California state median is $99,122.
What is the political history of California 1st Congressional District?
Akashic tracks 6 presidential elections in California 1st Congressional District from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
