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.

Telecommuters are a relatively large percentage of the workforce: 16.20% 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.

Another interesting thing about San Marcos, despite not being a huge city, is that there is a relatively high proportion of people living here who are young, single, and upwardly-mobile professionals. 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 among the most well-educated in the nation: 41.50% of adults in San Marcos have a bachelor's degree or even advanced degree, whereas the average US city has 21.84% holding at least a bachelor's degree.

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.

San Marcos also has a high percentage of its population that was born in another country: 23.02%.

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