California's 1st Congressional District
California · CA-01
California's 1st Congressional District is one of 52 U.S. House districts in California, represented in Congress by James Gallagher (Republican). It is home to roughly 758,907 people, with a median age of 40.4. The population is about 61% White. The median household income is $77,887, and 29% of adults 25 and older hold a bachelor’s degree or higher. In the 2024 presidential election it voted solidly Republican (R+25).
Representative
Current U.S. House member (source: house.gov).
Geography
CA-01 is shown in red. Click a neighboring district to open it, or zoom out to explore the country.
Covering 18,047 square miles, CA-01 is the 42nd-largest of the 435 congressional districts by land area. With about 42 residents per square mile, it is a predominantly rural district. Its shape is irregular: the district's Polsby-Popper score of 0.23 ranks 284th of 435 nationally, where 1st is the most compact.
Presidential results
In the 2024 presidential election, 36% of CA-01 voters backed Kamala Harris and 61% Donald Trump — a R+25 margin. That is a 6.0-point shift toward the Republicans from 2020, when the district voted R+19.
Two-party presidential vote by district (source: The Downballot).
Who lives here
The median resident of the district is 40.4 years old; 20.9% of residents are under 18 and 20% are 65 or older. About 12.4% of residents were born outside the United States, and 23% speak a language other than English at home.
U.S. Census Bureau, American Community Survey (5-year estimates).
Economy & education
At $77,887, the district's median household income ranks 210th of 435 districts nationwide. The typical owner-occupied home is worth $475,680, and the median rent is $1,527 a month. 13.6% of residents live below the poverty line, and workers average a 24-minute commute (11.6% work from home).
U.S. Census Bureau, American Community Survey (5-year estimates).