San Marcos Flag

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.

73.8K
Total Population
1,899
Density (mi²)
1.1K 1.54%
Growth

San Marcos Population

San Marcos Population

Data after 2023 is projected based on recent change

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)
White43,64363.32%
Two or more races13,76819.98%
Other race5,6738.23%
Black or African American3,8905.64%
Asian1,4742.14%
Native American4270.62%
Native Hawaiian or Pacific Islander450.07%

San Marcos Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)