California County College or university, San Marcos: In-county compared to. Out-of-County Tuition CSU San Marcos University fees Information In 2022, tuition to own complete-go out college students during the Ca County University, San Marcos is actually $5,742 annually for in the-county students and you will $fifteen,246 annually getting out-of-county people. When the these number sound hopeless, consider, the price of university fees isn’t necessarily what you will provides to expend