San Marcos is a larger medium-sized city located in the state of Texas. With a population of 71,569 people and 18 associated neighborhoods, San Marcos is the 57th largest community in Texas. There's nothing like the smell of a brand new house, and in San Marcos, you'll find that a large proportion of houses were recently built. New growth in residential real estate is an indication that people are choosing to move to San Marcos, and putting down their money on brand new construction. San Marcos’s real estate is, on average, some of the newest in the nation. San Marcos does seem to be experiencing an influx of affluent people, because the median household income is $47,394.00.

Also of interest is that San Marcos has more people living here who work in computers and math than 95% of the places in the US.

Telecommuters are a relatively large percentage of the workforce: 8.27% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

Because San Marcos has a very large number of students who are 18 years or older and in college, it is thought of as a college town. This has a major influence on local San Marcos lifestyle, entertainment, and culture in general. Life in San Marcos is very much tied to the academic calendar: when students return from the summer break in the fall, one will notice them out and about, buying groceries, out with friends, and generally getting re-acquainted with each other. In San Marcos people study hard and play hard, and there is ample opportunity to do both.

Not only is San Marcos a city with many college students, but it also retains many recent graduates who are looking to start new careers, creating a decent-sized population of people who are young, single, educated, and upwardly-mobile. This makes it a good choice for other relocating single professionals. Here, these young singles will find many others like themselves, with opportunities for friendships, socializing, romance, and fun.

The citizens of San Marcos are very well educated compared to the average community in the nation: 35.66% of adults in San Marcos have a bachelor's degree or even advanced degree.

The per capita income in San Marcos in 2022 was $25,282, which is lower middle income relative to Texas and the nation. This equates to an annual income of $101,128 for a family of four. However, San Marcos contains both very wealthy and poor people as well.

San Marcos is an extremely ethnically-diverse city. The people who call San Marcos home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of San Marcos residents report their race to be White, followed by Black or African-American. San Marcos also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 41.89% of the city’s residents. Important ancestries of people in San Marcos include German, Irish, English, Italian, and Scottish.

The most common language spoken in San Marcos is English. Other important languages spoken here include Spanish and Langs. of India.