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California's 1st Congressional District
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how California actually voted.
Model California's 1st Congressional District →
Current officeholder
Doug LaMalfa Republican
2024 result
Republican R+30.7
2024 votes cast
318,622
Office
U.S. House
Who lives in this district
This district is home to about 762,487 people, median age 38.2, median household income $69,110.
Population
762,487
Median age
38.2
Median household income
$69,110
Bachelor's degree or higher
23.3%
Race & ethnicity: White 62.2% · Black 1.9% · Hispanic 23.1% · Asian 5.8%
Source: U.S. Census Bureau, 2019–2023 American Community Survey (5-year).
Precinct results — 2024 general
830 precincts reported in California's 1st Congressional District's 2024 general election. The twenty largest:
| Precinct | Winner | Margin | Votes |
|---|---|---|---|
| 06007-2208A | Republican | R+8.0 | 3,693 |
| 06101-0000002A | Republican | R+18.1 | 2,724 |
| 06101-0000003A | Republican | R+23.6 | 2,362 |
| 06103-0010030A | Republican | R+59.9 | 2,317 |
| 06089-0420912A | Republican | R+44.3 | 2,296 |
| 06007-5202A | Democratic | D+5.7 | 2,277 |
| 06101-0000011A | Republican | R+37.2 | 2,130 |
| 06089-0390560A | Republican | R+54.9 | 2,079 |
| 06089-0320420A | Republican | R+35.6 | 1,977 |
| 06089-0320068A | Republican | R+37.9 | 1,967 |
| 06007-3215A | Democratic | D+48.1 | 1,910 |
| 06089-0220760A | Republican | R+22.5 | 1,897 |
| 06101-0000020A | Republican | R+28.1 | 1,880 |
| 06101-0000018A | Republican | R+26.2 | 1,832 |
| 06007-2802A | Republican | R+33.9 | 1,825 |
| 06089-0120894A | Republican | R+30.5 | 1,767 |
| 06089-0590940A | Republican | R+39.7 | 1,754 |
| 06089-0220460A | Republican | R+27.2 | 1,745 |
| 06089-0590330A | Republican | R+58.6 | 1,738 |
| 06089-0220575A | Republican | R+22.9 | 1,702 |
All 830 precincts are modelable — open the race in the simulator and drill to precinct grain.
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model California's 1st Congressional District in five steps
- Set the candidates. Name the contenders for the California's 1st Congressional District (or keep the generic Democrat / Republican defaults). The map starts from the canonical mixed-grain 2024 presidential baseline.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Explore local geography. Zoom from the state through counties to the finest supported reporting grain and adjust the places available in the model.
- Roll up & share. Roll the result up to chamber control, then share the exact versioned scenario.
Open California's 1st Congressional District in the simulator →