San Marcos, Texas Population 2023

74,351

San Marcos is a city located in Hays County Texas. It is also the county seat of Hays County. With a 2023 population of 74,351, it is the 56th largest city in Texas and the 539th largest city in the United States.San Marcos is currently growing at a rate of 3.14% annually and its population has increased by 10.06% since the most recent census, which recorded a population of 67,553 in 2020. Spanning over 34 miles, San Marcos has a population density of 2,178 people per square mile.

The average household income in San Marcos is $54,535 with a poverty rate of 29.35%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in San Marcos is 25.1 years, 26.1 years for males, and 24.2 years for females.

San Marcos Demographics

According to the most recent ACS, the racial composition of San Marcos was:

  • White: 78.83%
  • Two or more races: 7.26%
  • Black or African American: 6%
  • Other race: 4.87%
  • Asian: 2.77%
  • Native American: 0.18%
  • Native Hawaiian or Pacific Islander: 0.08%
The current population of San Marcos, Texas is 74,351 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 67,553.

San Marcos, Texas Population 2023

Population by Race

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

San Marcos Population by Race

San Marcos Population Pyramid 2023

San Marcos Median Age

25.1

Total

26.1

Male

24.2

Female

San Marcos Adults

There are 55,651 adults, (6,050 of whom are seniors) in San Marcos.

San Marcos Age Dependency

29.1

Age Dependency Ratio

12.2

Old Age Dependency Ratio

16.9

Child Dependency Ratio

San Marcos Sex Ratio

Female33,96253.02%
Male30,09146.98%

San Marcos Population by Age

San Marcos Renter vs Owner Occupied by Household Type

3.01

Average Family Size

2.44

Average Household Size

29.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

San Marcos Households and Families

Male

Female

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

San Marcos Educational Attainment by Sex (over 25)

San Marcos Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

The highest rate of high school graduation is among other race people with a rate of 94.83%.

The highest rate of bachelors degrees is among other race people with a rate of 52.91%.

San Marcos Educational Attainment by Race

All

Male

Female

$31,680

Average Earnings

$34,699

Average Male

$26,647

Average Female

San Marcos Earnings by Educational Attainment

San Marcos Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

San Marcos Language

72.11% of San Marcos residents speak only English, while 27.89% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 23.55% of the population.

San Marcos Language

San Marcos Poverty by Race

rate

29.35%

Overall Poverty Rate

22.26%

Male Poverty Rate

34.86%

Female Poverty Rate

Poverty in San Marcos

The race most likely to be in poverty in San Marcos is Islander, with 61.11% below the poverty level.

The race least likely to be in poverty in San Marcos is Multiple, with 13.64% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 7.04%. Among those working part-time, it was 46.03%, and for those that did not work, the poverty rate was 41.12%.

San Marcos Poverty

San Marcos Poverty Rate by Education

San Marcos Poverty Rate by Employment Status and Sex

San Marcos Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

mean

median

Income by Household Type

San Marcos Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

26.7%

Overall Marriage Rate

27.3%

Male Marriage Rate

26.3%

Female Marriage Rate

San Marcos Married by Age and Sex

male

female

San Marcos Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is Over 65.

San Marcos Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

San Marcos Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

2,829

Number of Veterans

2,569

Male Veterans

260

Female Veterans

San Marcos Veterans by War

San Marcos Veterans by Age

count

San Marcos Veterans by Race

San Marcos Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

7.71%

Veteran Poverty Rate

25.35%

Veteran Disability Rate

San Marcos Veterans by Education

LaborForceParticipation

65.7%

Labor Force Participation

60.8%

Employment Rate

7.4%

Unemployment Rate

San Marcos Employment by Age

LaborForceParticipation

San Marcos Employment by Race

LaborForceParticipation

San Marcos Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

63.81%

Born in San Marcos

86.27%

Native Born

8.54%

Foreign Born

5.03%

Non Citizen

3.51%

Naturalized

Place of Birth

86.27% of San Marcos residents were born in the United States, with 63.81% having been born in Texas. 5.03% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

San Marcos Place of Birth

Note: data after 2020 is projected based on recent growth

San Marcos Population by Year