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University Student Union

University Student Union

The Heartbeat of Campus


The University Student Union (USU) at Cal State San Marcos welcomes all students and the campus community to the Fall 2021 semester. Everything the USU provides for you is intended to optimize your sense of belonging at CSUSM through student engagement, connection and community building. 

To learn more and be part of upcoming USU virtual programs and involvement opportunities, please follow our Instagram page.

For questions or support on USU services or virtual programs, email:

Hours of Operation

  • Monday-Thursday: 7:00 AM-10:00 PM
  • Friday: 7:00 AM-8:00 PM
  • Saturday: 10:00 AM-5:00 PM
  • Sunday: 5:00 PM-10:00 PM
Building Closures:
  • Saturday, March 12 (Super STEM)
  • Thursday, March 31 (Cesar Chavez Day of Service)

Spring Break Hours Of Operation

Saturday, March 19-Sunday March 27
  • Sunday: Closed
  • Monday-Friday: 7:30 AM-5:30 PM
  • Saturday: Closed



Explore the USU

Who is in the USU?

The USU houses Associated Students Inc (ASI), Student Life Centers, Cougar Pantry, Dean of Students, Student Leadership & Involvement Center, and campus dining.

All USU Partners

About the Building

Did you know that the USU is a Certified LEED Gold Building? Learn about the building's sustainability efforts and USU building spaces.

Building Information


Did you know that the USU offers discounted tickets to students, faculty, and staff? Enjoy discounted outings with the Ticket Center.

Ticket Center

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