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San Marcos city, TX

ZIP 78656 — People & Community

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

Middle ClassLow Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 78656

78656 has a population of 2,953 with a median age of 32.6 yrs (52.6% male).

Race & Ethnicity
White
67.2%+9% vs US avg
x
Black
5.6%-55% vs US avg
x
Asian
0.0%
x
Hispanic
75.8%+305% vs US avg
x
Age Groups
0–17
23.5%+7% vs US avg
x
18–64
65.7%+7% vs US avg
x
65+
10.8%-34% vs US avg
x
Education
Less than HS
29.6%+166% vs US avg
x
High school
27.2%+4% vs US avg
x
Some college
32.1%+11% vs US avg
x
Bachelor's+
11.1%-67% vs US avg
x
Marital Status
Married
46.8%-3% vs US avg
x
Never married
41.2%+22% vs US avg
x
Divorced
6.9%-33% vs US avg
x
Widowed / Separated
5.2%
x
Diversity Index
-3/100

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

Social & household profile

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

Poverty Rate
7.3%-36% vs US avg
x
Foreign Born
60.7%+337% vs US avg
x
Veterans
4.4%-26% vs US avg
x
Disability
12.0%-11% vs US avg
x
Single Parent
0.0%
x
Top ancestry
GermanPolishEnglish

Health & Community Indicators in 78656

Poverty Rate
7.3%-36% vs US avg
x
Veterans
4.4%-26% vs US avg
x
Foreign Born
60.7%+337% vs US avg
x
Single Parent
0.0%
x
Disability
12.0%-11% vs US avg
x
Uninsured
29.0%+262% vs US avg
x
SNAP Benefits
1.3%-89% vs US avg
x
Private School
0.0%
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population2,953
Median age32.6
Poverty rate7.3%
Demographics statistics
Demographics
White67.2%
Hispanic75.8%
Black5.6%
Asian0.0%
Foreign-born60.7%