San Marcos is a larger medium-sized city located in the state of California. With a population of 94,854 people and 21 associated neighborhoods, San Marcos is the 80th largest community in California.

Housing costs in San Marcos are among some of the highest in the nation, although real estate prices here don't compare to real estate prices in the most expensive communities in California.

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: 16.20% 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.

One thing noticeable about San Marcos, although not a huge city, is that it has a large population of people who are young, single, educated, and upwardly-mobile career starters. 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.

San Marcos is one of the most well-educated cities in the nation. 41.50% of adults in San Marcos have at least a bachelor's degree. Compare that to the average community in America, which has just 21.84% with a bachelor's degree or higher.

The per capita income in San Marcos in 2022 was $42,194, which is middle income relative to California, and upper middle income relative to the rest of the US. This equates to an annual income of $168,776 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 Asian. 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 39.78% of the city’s residents. Important ancestries of people in San Marcos include German, Irish, English, Italian, and European.

Foreign born people are also an important part of San Marcos's cultural character, accounting for 23.02% of the city’s population.

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