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

White

Two or more races

Other race

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

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