Unified School District · CA
San Marcos Unified School District
San Marcos Unified School District is a unified school district in California with a community population of 127,375. The median household income is $112,358 and the median age is 38.2.
127,375
Population
3059
People / sq mi
$112,358
Median Income
38.2
Median Age
San Marcos Unified School District covers 42 sq mi of land at 3059.0 people per square mile.
Race & Ethnicity
| White | 53.0% |
| Black or African American | 0.1% |
| Asian | 39.2% |
| Hispanic or Latino (any race) | 0.0% |
Economy & Income
$112,358
Median Household Income
$50,865
Per Capita Income
6.6%
Poverty Rate
3.2%
Unemployment
Housing
$895,200
Median Home Value
$2,373
Median Rent
64.3%
Homeownership
Education Attainment
88.7%
High School+
44.9%
Bachelor's+
Other California School Districts
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State rankings
Frequently Asked Questions
San Marcos Unified School District serves a community with a population of 127,375 according to the latest Census ACS 5-Year estimates. This unified school district is located in California.
The median household income in San Marcos Unified School District is $112,358, with a per capita income of $50,865. The poverty rate is 6.6%.
San Marcos Unified School District is 53.0% White, 0.1% Black or African American, 39.2% Asian, and 0.0% Hispanic or Latino, per Census ACS data.
In San Marcos Unified School District, 88.7% of adults have a high school diploma or higher, and 44.9% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in San Marcos Unified School District is $895,200, with a median rent of $2,373. The homeownership rate is 64.3%.
More from California
Data for San Marcos Unified School District from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 0634880).
Housing cost is the defining feature of San Marcos Unified School District: the median home is valued at $895,200. With 127,375 residents, San Marcos Unified School District is a school district in California.
Median household income is $112,358, above the US median of $78,538. The poverty rate is 6.6%, below the national 12.4%. Real estate commands a premium here — a median home value of $895,200, with typical rent around $2,373.
About 44.9% of adults 25 and older have a bachelor’s degree, above the 35.0% national figure.
High housing values reframe the income picture in San Marcos Unified School District — even solid earnings stretch less against home prices and rents at this level.
Source: U.S. Census Bureau ACS, 2026.