Beta Chapter
- Founded: 1973
- School: California State University, Long Beach
- Instagram: @lbsigmas
Gamma Chapter
- Founded: 1991
- School: University of Texas at Austin
- Instagram: @texassigmas
Delta Chapter
- School: San Diego State University
- Instagram: @sdsigmas
Epsilon Chapter
- Founded: 1995
- School: University of Houston
- Instagram: @houstonsigmas
Zeta Chapter
- Founded: 1997
- School: University of Berkeley
- Instagram: @berkeleysigmas
Iota Chapter
- Founded: 2009
- School: Texas A&M University
- Instagram: @aggiessigmas
Kappa Chapter
- Founded: 2013
- School: University of Texas at Dallas
- Instagram: @dallassigmas