Tri-State University hosts national fraternities, one national sorority, and four local sororities.  The headquarters of the nationally-affiliated fraternities are located in various cities around the United States.  They provide support services to the chapters, including assistance through traveling consultants and access to educational foundation scholarships.  In addition, for the national affiliates, most chapters have built-in ties with local, regional, and national alumni.

Each fraternity and sorority has much to offer in terms of opportunities for student involvement.  The members pride themselves in their work for and with other people, and their involvement is made manifest in a wide range of social, educational, and philanthropic activities.

The following national fraternities are represented by chapters at Tri-State:

• Delta Chi
• Kappa Sigma
• Phi Kappa Theta
• Sigma Phi Delta
• Sigma Phi Epsilon
• Triangle Fraternity
• Alpha Sigma Phi

The following local sororities that do not have national affiliation are recognized by Tri-State:

• Kappa Sigma Alpha
• Gamma Phi Epsilon
• Phi Sigma
• Zeta Theta Epsilon