San Marcos is located in California. San Marcos, California has a population of 94,313. San Marcos is more family-centric than the surrounding county with 40.87% of the households containing married families with children. The county average for households married with children is 33.76%.
The median household income in San Marcos, California is $90,620. The median household income for the surrounding county is $88,240 compared to the national median of $69,021. The median age of people living in San Marcos is 35.6 years.
The average high temperature in July is 80.6 degrees, with an average low temperature in January of 45 degrees. The average rainfall is approximately 13.7 inches per year, with 0 inches of snow per year.