78666
San Marcos, TX
Quick Facts & Insights
Key metrics and how they compare
Data Sources & Accuracy
Estimates carry a margin of error and describe the ZIP-code area as a whole, not any individual property or block. See our methodology and data sources for details, or report a problem on our corrections page.
Do more with San Marcos, TX 78666
Keep 78666 in your account to compare and revisit later — free.
Generate an in-depth, shareable report built from verified data for 78666.
New here? See report plans and pricing.
Location Map
San Marcos, TX 78666
Loading map...
Demographics Overview
Population statistics from the U.S. Census Bureau (ACS 5-year estimates)
Key Demographic Insightsfor San Marcos, TX
Median household income is 100% below state average, suggesting more affordable cost of living.
33.3% of adults hold bachelor's degrees or higher, comparable to national average.
Young population with median age of 26.5 years, attracting young professionals and families.
Unemployment rate of 6.3% is above national average, indicating economic challenges.
Poverty rate of 22.6% is above national average of 11.5%.
Insights are derived from US Census Bureau data and may not reflect recent changes.
Household Income Distribution
Age Distribution
Population by age group
Household Income Breakdown
Households by income bracket
Education Levels (Age 25+)
Highest education attained
Race & Ethnicity
Demographic composition
Households & Employment
Household Types
Family composition breakdown
Average Household Size: 2.36 people
Employment by Industry
Where residents work
Commute Patterns
How residents get to work
Labor Force Statistics
Nearby ZIP Codes
Explore surrounding areas