San Marcos, TX Census Data
Key demographic and economic indicators for San Marcos, Texas from the 2023 American Community Survey (ACS) 5-year estimates.
Updated: 2026-03-23 · Source: U.S. Census Bureau, ACS 2023
Population
68,920
46.9% male · 53.1% female
Median Age
25.5
13.2 below the national average (38.7 yrs)
Median Household Income
$51,030
27,508.0 below the national average ($78,538)
Bachelor's Degree or Higher
37.3%
2.3 above the national average (35.0%)
HS diploma or higher: 90.9%
Poverty Rate
26.7%
14.3 above the national average (12.4%)
Uninsured: 16.1%
Broadband Access
95.9%
6.2 above the national average (89.7%)
Median Home Value
$269,700
Median rent: $1,299 · 30% owner-occupied
Unemployment Rate
6.1%
Labor force participation: 62.7%
Demographics
Race & Ethnicity
Age Distribution
Commute to Work
San Marcos, TX Frequently Asked Questions
What is the population of San Marcos, TX?
The population of San Marcos, TX is 68,920 according to the 2023 American Community Survey 5-year estimates. The median age is 25.5 years.
What is the median household income in San Marcos?
The median household income in San Marcos, TX is $51,030, below the national average of $78,538. Per capita income is $22,881.
What is the poverty rate in San Marcos?
The poverty rate in San Marcos, TX is 26.7%, compared to the national average of 12.4%. About 16.1% of residents lack health insurance.
What percentage of San Marcos residents have a college degree?
37.3% of adults (25+) in San Marcos hold a bachelor's degree or higher, and 90.9% 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, TX is $269,700. Median rent is $1,299 per month, with 30% of housing units owner-occupied.
What is the racial makeup of San Marcos?
San Marcos's population is 63.3% White, 5.6% Black, 41.9% Hispanic or Latino, and 2.1% Asian (source: 2023 ACS).