Since our establishment in March 1994, Sigma Psi Zeta has grown to encompass over 20 chapters and charters in 12 different states across the nation and is continuously expanding. The following are the current locations in which we are established.
Sigma Chapters
| Letter | School | Location | Established |
| Alpha | SUNY - Albany | Albany, NY | March 23, 1994 |
| Beta | SUNY - Binghamton | Binghamton, NY | January 4, 1995 |
| Delta | SUNY - Buffalo | Buffalo, NY | October 3, 1998 |
| Eta | City Chapter - Long Island | Long Island, NY | May 20, 2000 |
| Theta | University of Massachusetts | Amherst, MA | November 18, 2000 |
| Iota | University of Rochester | Rochester, NY | December 1, 2000 |
| Lambda | University of Virginia | Charlottesville, VA | December 1, 2000 |
| Omicron | Stanford University | Stanford, CA | January 8, 2004 |
| Rho | University of Washington | Seattle, WA | November 22, 2003 |
| Tau | University of Maryland | College Park, MD | December 6, 2003 |
| Upsilon | University of Pennsylvania | Philadelphia, PA | April 18, 2004 |
Sigma Charters
| Letter | School | Location | Established |
| Kappa | Virginia Tech | Blacksburg, VA | January 7, 2001 |
| Mu | SUNY - Geneseo | Geneseo, NY | June 2, 2002 |
| Nu | Drexel University | Philadelphia, PA | July 13, 2002 |
| Xi | University of Nebraska | Lincoln, NE | January 3, 2003 |
| Pi | George W. University | Washington, D.C. | November 15, 2003 |
| Phi | University of Colorado | Boulder, CO | April 25, 2004 |
| Chi | Shippensburg University | Shippensburg, PA | April 29, 2006 |
| Alpha Alpha | Yale University | New Haven, CT | April 8, 2007 |
| Alpha Beta | Northwestern University | Evanston, IL | May 10, 2008 |
Sigma Colonies
| Chapter | School | Location | Established |
| Gamma | Inactive | Jamaica, NY | January 18, 1997 |
| Epsilon | Inactive | Oneonta, NY | October 3, 1998 |
| Zeta | Inactive | New York, NY | November 7, 1998 |