San Marcos is a city located in Caldwell County, Comal County, Guadalupe County, Hays County, and Travis County Texas. San Marcos has a 2024 population of 72,474. It is also the county seat of Hays County. San Marcos is currently growing at a rate of 1.52% annually and its population has increased by 6.38% since the most recent census, which recorded a population of 68,128 in 2020.
The average household income in San Marcos is $60,543 with a poverty rate of 27.65%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in San Marcos is 25.2 years, 25.7 years for males, and 24.6 years for females.
According to the most recent ACS, the racial composition of San Marcos was:
White
Two or more races
Other race
Black or African American
Asian
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 26,980 | 2.26 | 28.9 | 71.1 |
| Non Family | 15,130 | 1.72 | 14.2 | 85.8 |
| Married | 7,797 | 2.93 | 57.8 | 42.2 |
| Female | 2,891 | 3.13 | 23.1 | 76.9 |
| Male | 1,162 | 2.53 | 40.4 | 59.6 |
2.84
Average Family Size
2.26
Average Household Size
28.9%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among islander people with a rate of 100%.
The highest rate of bachelors degrees is among white people with a rate of 49.09%.
All
Male
Female
$36,778
Average Earnings
$39,621
Average Male
$30,243
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
71.13% of San Marcos residents speak only English, while 28.87% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 24.52% of the population.
rate
27.65%
Overall Poverty Rate
21.62%
Male Poverty Rate
33.25%
Female Poverty Rate
The race most likely to be in poverty in San Marcos is Black, with 42.04% below the poverty level.
The race least likely to be in poverty in San Marcos is Native, with 2.76% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 6.13%. Among those working part-time, it was 41.11%, and for those that did not work, the poverty rate was 43.98%.
Married
Widowed
Divorced
Separated
NeverMarried
28.5%
Overall Marriage Rate
29.5%
Male Marriage Rate
27.5%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
6.24%
Veteran Poverty Rate
25.13%
Veteran Disability Rate
LaborForceParticipation
66.8%
Labor Force Participation
62%
Employment Rate
6.8%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
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.
Europe
Asia
Africa
Oceania
Latin America
North America
69.73%
Born in San Marcos
91.26%
Native Born
8.74%
Foreign Born
5.98%
Non Citizen
2.75%
Naturalized
91.26% of San Marcos residents were born in the United States, with 69.73% having been born in Texas. 5.98% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 77,906 | 1,086 | 1.41% |
| 2028 | 76,820 | 1,087 | 1.44% |
| 2027 | 75,733 | 1,086 | 1.45% |
| 2026 | 74,647 | 1,087 | 1.48% |
| 2025 | 73,560 | 1,086 | 1.5% |
| 2024 | 72,474 | 1,087 | 1.52% |
| 2023 | 71,387 | 1,086 | 1.54% |
| 2022 | 70,301 | 1,086 | 1.57% |
| 2021 | 69,215 | 1,087 | 1.6% |
| 2020 | 68,128 | 3,376 | 5.21% |
| 2019 | 64,752 | 950 | 1.49% |
| 2018 | 63,802 | 186 | 0.29% |
| 2017 | 63,616 | 1,834 | 2.97% |
| 2016 | 61,782 | 1,316 | 2.18% |
| 2015 | 60,466 | 1,469 | 2.49% |
| 2014 | 58,997 | 4,588 | 8.43% |
| 2013 | 54,409 | 4,399 | 8.8% |
| 2012 | 50,010 | 2,322 | 4.87% |
| 2011 | 47,688 | 2,430 | 5.37% |
| 2010 | 45,258 | 10,525 | 30.3% |
| 2000 | 34,733 | 5,990 | 20.84% |
| 1990 | 28,743 | 5,323 | 22.73% |
| 1980 | 23,420 | 4,560 | 24.18% |
| 1970 | 18,860 | 6,147 | 48.35% |
| 1960 | 12,713 | 2,733 | 27.38% |
| 1950 | 9,980 | 3,974 | 66.17% |
| 1940 | 6,006 | 872 | 16.98% |
| 1930 | 5,134 | 607 | 13.41% |
| 1920 | 4,527 | 456 | 11.2% |
| 1910 | 4,071 | 0 | 0% |