About San Marcos, TXSan Marcos is located in Texas. San Marcos, Texas has a population of 55,275. San Marcos is less family-centric than the surrounding county with 19% households with children. The county percentage for households with children is 33%. The median household income in San Marcos, Texas is $34,437. The median household income for the surrounding county is $63,714 compared to the national median of $57,525. The median age of people living in San Marcos is 25.4 years. San Marcos WeatherThe average high temperature in July is 95.1 degrees, with an average low temperature in January of 38.6 degrees. The annual precipitation is 37.19. San Marcos MapSan Marcos real estate officesSort by:
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