San Marcos, CA Census Data
Key demographic and economic indicators for San Marcos, California from the 2023 American Community Survey (ACS) 5-year estimates.
Updated: 2026-03-23 · Source: U.S. Census Bureau, ACS 2023
Population
94,078
49.6% male · 50.4% female
Median Age
36.8
1.9 below the national average (38.7 yrs)
Median Household Income
$105,286
26,748.0 above the national average ($78,538)
Bachelor's Degree or Higher
42.7%
7.7 above the national average (35.0%)
HS diploma or higher: 88.1%
Poverty Rate
10.2%
2.2 below the national average (12.4%)
Uninsured: 7.1%
Broadband Access
97.9%
8.2 above the national average (89.7%)
Median Home Value
$792,400
Median rent: $2,191 · 63% owner-occupied
Unemployment Rate
4.5%
Labor force participation: 61.8%
Demographics
Race & Ethnicity
Age Distribution
Commute to Work
San Marcos, CA Frequently Asked Questions
What is the population of San Marcos, CA?
The population of San Marcos, CA is 94,078 according to the 2023 American Community Survey 5-year estimates. The median age is 36.8 years.
What is the median household income in San Marcos?
The median household income in San Marcos, CA is $105,286, above the national average of $78,538. Per capita income is $48,055.
What is the poverty rate in San Marcos?
The poverty rate in San Marcos, CA is 10.2%, compared to the national average of 12.4%. About 7.1% of residents lack health insurance.
What percentage of San Marcos residents have a college degree?
42.7% of adults (25+) in San Marcos hold a bachelor's degree or higher, and 88.1% have at least a high school diploma. The national average for bachelor's degree holders is 35.0%.
What is the median home value in San Marcos?
The median home value in San Marcos, CA is $792,400. Median rent is $2,191 per month, with 63% of housing units owner-occupied.
What is the racial makeup of San Marcos?
San Marcos's population is 55.1% White, 1.5% Black, 37.3% Hispanic or Latino, and 10.9% Asian (source: 2023 ACS).