San Marcos, TX Population

Overview

64,812

Total Population

24.9

Median age

52.50%

Female population %

90.5:100

Gender ratio (M:F)

20-24 years

Largest age group

24.8

Total dependency ratio

White

Largest racial group

26,503

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

San Marcos's population is young compared to the rest of the country:

The median age in San Marcos is 24.9, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
San Marcos's population under 18 was 12.96%, compared to the 22.51% nationwide.
San Marcos's elderly or the senior population (over 65 age) was 9.31% as compared to 16.04% nationwide.
Of the total population in San Marcos, 10.58% were under the age of 15, 50.90% aged 15 to 29, 29.22% aged 30 to 64, 7.97% aged 65 to 84, and 1.34% were 85 years of age and older.

There are 3,240 more females than males in San Marcos:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 52.50% females and 47.50% males in San Marcos, TX.
The San Marcos, TX gender ratio is 90.5:100 i.e. 90.5 men to 100 women (0.905).
For male population, the largest age group is 20-24 years with a population of 7,863.
For the female population, the largest age group is 20-24 years with a population of 10,069.

San Marcos's population has become increasingly diverse:

Racial distribution of San Marcos population: 72.43% are White, 6.87% are Black or African American, 0.42% are American Indian and Alaska Native, 2.59% are Asian, 0.08% are Native Hawaiian and other Pacific Islander, 5.01% are some other race and 12.58% are multiracial.
San Marcos's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 26,503 is Hispanic or Latino (of any race), and 38,309 (59.11% of the total population) is Non-Hispanic.
The largest racial group in San Marcos is White with a population of 46,945 (72.43% of the total population).

San Marcos's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 70,301 in the year 2022
From 2000 to 2010, San Marcos's population increased by 9,138 (25.30%), as compared to the national growth of 9.63%.
From 2010 to 2020, San Marcos's population increased by 22,870 (50.53%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, San Marcos's population was lowest in year 2000 at 36,120.