San Marcos is a larger medium-sized city located in the state of Texas. With a population of 70,301 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.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 8.27% of the workforce. While this number may seem small overall, as a fraction of the total workforce this is high compared to the rest of the county. 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.

San Marcos is also a major college town with a large number of people who are 18 years or older and attending college. As is often the case in college towns, the many students that live in San Marcos have a strong influence on the local culture and entertainment scene, which may seem dormant by comparison in the summer months when much of the student population is away. In the fall, the return of students has a reinvigorating effect on the community. Because colleges are lasting institutions, they have a stabilizing effect on the economy by providing direct local benefits such as jobs for faculty and staff and spending by students. San Marcos’s economy is one such example of this.

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 very large population of people who are young, single, educated, and upwardly-mobile. That’s because San Marcos is full of single people in their 20s and 30s and who have undergraduate or graduate degrees and are starting careers in professional occupations. This makes San Marcos a pretty good place for young, educated career starters looking to find many people like themselves, with good opportunities for friendships, socializing, romance, and fun.

The education level of San Marcos citizens is very high relative to the national average among all cities (21.84%): 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.