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San Marcos city, CA

ZIP 92078 — People & Community

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Upper Middle ClassLarge CommunityLow Snow AreaRemote Work Hub

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 92078

92078 has a population of 53,542 with a median age of 38.6 yrs (49.4% male).

Race & Ethnicity
White
61.9%+1% vs US avg
x
Black
1.3%-89% vs US avg
x
Asian
10.4%+76% vs US avg
x
Hispanic
28.3%+51% vs US avg
x
Age Groups
0–17
25.1%+14% vs US avg
x
18–64
58.6%-5% vs US avg
x
65+
16.3%+0% vs US avg
x
Education
Less than HS
7.5%-32% vs US avg
x
High school
12.8%-51% vs US avg
x
Some college
31.3%+8% vs US avg
x
Bachelor's+
48.3%+43% vs US avg
x
Marital Status
Married
56.8%+18% vs US avg
x
Never married
29.1%-14% vs US avg
x
Divorced
8.8%-15% vs US avg
x
Widowed / Separated
5.3%
x
Diversity Index
53/100

Higher = more diverse (Simpson index from race/ethnicity)

Social & household profile

Poverty, nativity, veterans, disability, family structure, and births (ACS).

Poverty Rate
8.4%-27% vs US avg
x
Foreign Born
16.4%+18% vs US avg
x
Veterans
6.2%+3% vs US avg
x
Disability
10.3%-23% vs US avg
x
Single Parent
7.2%-11% vs US avg
x
Recent Births
36.4%+528% vs US avg
x
Top ancestry
GermanEnglishIrish

Health & Community Indicators in 92078

Poverty Rate
8.4%-27% vs US avg
x
Veterans
6.2%+3% vs US avg
x
Foreign Born
16.4%+18% vs US avg
x
Single Parent
7.2%-11% vs US avg
x
Disability
10.3%-23% vs US avg
x
Uninsured
5.1%-36% vs US avg
x
SNAP Benefits
5.5%-53% vs US avg
x
Private School
0.2%-98% vs US avg
x
Recent Births
36.4%+528% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population53,542
Median age38.6
Poverty rate8.4%
Demographics statistics
Demographics
White61.9%
Hispanic28.3%
Black1.3%
Asian10.4%
Foreign-born16.4%