San Marcos

County:: Hays County
County Seat:: Yes
Area (mi²):: 38.871
State:: Texas

San Marcos is a city located in Hays County, Texas. San Marcos has a 2025 population of 73,803. It is also the county seat of Hays County. San Marcos is currently growing at a rate of 1.54% annually and its population has increased by 8.19% since the most recent census, which recorded a population of 68,217 in 2020.

The average household income in San Marcos is $63,872 with a poverty rate of 26.7%.The median age in San Marcos is 25.5 years: 26.1 years for males, and 24.8 years for females.

Demographics

The racial composition of San Marcos includes 63.32% White, 8.23% other race, 5.64% Black or African American, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	43,643	63.32%
Two or more races	13,768	19.98%
Other race	5,673	8.23%
Black or African American	3,890	5.64%
Asian	1,474	2.14%
Native American	427	0.62%
Native Hawaiian or Pacific Islander	45	0.07%

San Marcos Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

San Marcos' average per capita income is $39,076. Household income levels show a median of $51,030. The poverty rate stands at 26.7%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$83,801	-
Families	$63,670	$83,378
Households	$51,030	$63,872
Non Families	$35,997	$46,506

$39,076

Average Income

$51,030

Median Household Income

26.7%

Poverty Rate