ZIP CodeStandard
78666
San Marcos, TX
ZIP Code 78666 in San Marcos, TX has a population of 86,584 and a median household income of $54,737. Explore Census demographics, housing, and a map.
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
86,584
People
Median age
26.9
Housing
Total households
33,949
Income
Median household income
$54,737
Housing
Total housing units
36,580
Employment
Employment rate
61.8%
Education
Bachelor’s degree or higher
35.7%
Healthcare
Insured population
83.4%
Nearby ZIP codes
ZIP codes near 78666.
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS