119th Congress · CA-40
California's 40th Congressional District
California's 40th Congressional District (CA-40) has a population of 754,183. The median household income is $132,031 and the median age is 42.4.
754,183
Population
1928
People / sq mi
$132,031
Median Income
42.4
Median Age
CA-40 covers 391 sq mi of land at 1928.0 people per square mile.
Race & Ethnicity
| White | 54.9% |
| Black or African American | 1.8% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.8% |
Economy & Income
$132,031
Median Household Income
$61,266
Per Capita Income
4.7%
Poverty Rate
3.1%
Unemployment
Housing
$933,600
Median Home Value
$2,525
Median Rent
71.4%
Homeownership
Education
93.3%
High School+
50.7%
Bachelor's+
Other California Congressional Districts
Largest cities in California
Largest counties in California
State rankings
Frequently Asked Questions
California's 40th Congressional District (CA-40) has a population of 754,183 according to the latest Census ACS 5-Year estimates. Each US Congressional District is drawn to be roughly equal in population (~760K people).
The median household income in California's 40th Congressional District is $132,031, with a per capita income of $61,266.
California's 40th Congressional District is 54.9% White, 1.8% Black, 0.0% Asian, and 1.8% Hispanic or Latino, per Census ACS data.
More from California
Data for California's 40th Congressional District (119th Congress) from the American Community Survey 5-Year estimates. Land area from the Census Gazetteer files. Congressional districts are redrawn after each decennial Census; the 119th Congress (current) uses post-2020 boundaries.
The this entity record above pulls directly from the U.S. Census Bureau ACS and decennial files. What follows is the per-entity context — how this entity sits in the broader U.S. population demographics distribution and which underlying factors drive the headline numbers.
Every number on this page links back to the U.S. Census Bureau ACS and decennial files; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. states, metros, cities, and ZIPs with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: U.S. Census Bureau ACS, 2026.