119th Congress · CA-18
California's 18th Congressional District
California's 18th Congressional District (CA-18) has a population of 756,539. The median household income is $100,769 and the median age is 34.4.
756,539
Population
165
People / sq mi
$100,769
Median Income
34.4
Median Age
CA-18 covers 4,573 sq mi of land at 165.4 people per square mile.
Race & Ethnicity
| White | 29.1% |
| Black or African American | 2.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.3% |
Economy & Income
$100,769
Median Household Income
$39,230
Per Capita Income
8.1%
Poverty Rate
3.4%
Unemployment
Housing
$799,300
Median Home Value
$2,040
Median Rent
52.0%
Homeownership
Education
72.7%
High School+
23.9%
Bachelor's+
Other California Congressional Districts
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Frequently Asked Questions
California's 18th Congressional District (CA-18) has a population of 756,539 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 18th Congressional District is $100,769, with a per capita income of $39,230.
California's 18th Congressional District is 29.1% White, 2.3% Black, 0.0% Asian, and 3.3% Hispanic or Latino, per Census ACS data.
More from California
Data for California's 18th 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.
Housing cost is the defining feature of California's 18th Congressional District: the median home is valued at $799,300. California's 18th Congressional District is a congressional district in California with a population of 756,539.
Households take in a median $100,769, comfortably above the US median of $78,538. The poverty rate is 8.1%, below the national 12.4%. Housing is expensive: the median home is worth $799,300, with typical rent around $2,040.
College attainment is 23.9%, below the national 35.0%.
High housing values reframe the income picture in California's 18th Congressional District — even solid earnings stretch less against home prices and rents at this level.
Source: U.S. Census Bureau ACS, 2026.