Welcome to the fantastic area of San Marcos! As of the latest US census, around 92,709 call this area home and around 33% are homeowners. With an average age of 31, San Marcos has a dynamic, and energetic population. In any given day, you’ll see parents taking their kids to school, staying active in the nearby parks, or simply enjoying the hustle and bustle of San Marcos. Over the recent months roughly 188 homes have been sold with an average sold price of $257,332. That is a decrease of $125,669 from the previous period.