Alpha Chapter was founded at the University of Virginia on March 1, 1868.

Beta Chapter was founded at Davidson College on March 1, 1869. The chapter closed that same year, but was reopened in 1894 and remained active until 2012.

Gamma Chapter was founded at the College of William and Mary on February 27, 1871. The chapter closed in 1878, was reopened from 1894 but remained open for only a year, closing again in 1895. The chapter reopened for a second time in 1897 and remained active until 2019.

Delta Chapter was founded at Birmingham-Southern College on June 6, 1871. The chapter closed in 1873, but reopened in 1905 and remained active until 1970.

Epsilon Chapter was founded at Virginia Tech University on November 11, 1873. The chapter closed in 1880, reopened in 1971 and remained open until 1994. The chapter reopened for a second time in 2000 and remains active to this day.

Zeta Chapter was founded at the University of Tennessee on March 23, 1874, but closed the following year. The chapter reopened briefly in 1886, but closed again in 1887. Zeta Chapter reopened a second time in 1892 and remained active until 2014. The chapter was reopened for a third time in 2018.

Eta Chapter was founded at Tulane University on January 14, 1879. The chapter closed in 1881, but reopened in 1903 and remained open until 2008.

Theta Chapter was founded at Rhodes College on October 21, 1878.

Iota Chapter was founded at Hampden-Sydney College on November 14, 1885. The chapter closed in 2012, but reopened in 2015.

Kappa Chapter was founded at Transylvania University on May 1, 1888, but closed the following year. The chapter reopened in 1900 and remains active to this day.

Lambda Chapter was founded at The Citadel: The Military College of South Carolina on January 24, 1889. The chapter closed in 1900.

Mu Chapter was founded at Presbyterian College on December 9, 1890. The chapter closed in 1909, but reopened in 1921.

Nu Chapter was founded at Wofford College on February 23, 1891. The chapter closed in 1906, but reopened in 1951.

Xi Chapter was founded at the University of South Carolina on October 22, 1891. The chapter closed in 1897, but reopened in 1928 and remained open until 1972. Xi Chapter reopened for a second time in 1975 and remained active until 2002. The chapter reopened again, for a third time, in 2007.

Omicron Chapter was founded at the University of Richmond on October 23, 1891. The chapter closed in 1893, but reopened gain in 1901 and remained active until 2006.

Pi Chapter was founded at Washington and Lee University on February 4, 1892. The chapter closed in 1898, but reopened in 1901.

Rho Chapter was founded at Cumberland College on May 12, 1892. The chapter closed in 1908.

Sigma Chapter was founded at Vanderbilt University on September 23, 1893, but closed shortly after in 1895. The chapter reopened in 1897 and remained active until 1906. Sigma Chapter reopened a second time in 1921 and remained active until 2012. The chapter opened again, for a third time, in 2016.

Tau Chapter was founded at the University of North Carolina on February 11, 1895. The chapter closed in 1897, but reopened in 1899.

Upsilon Chapter was founded at Auburn University on April 5, 1895.

Phi Chapter was founded at Roanoke College on October 15, 1896. The chapter closed in 1909, but was reopened in 2001.

Chi Chapter was founded at Sewanee: The University of the South on May 6, 1898. The chapter closed in 1909.

Psi Chapter was founded at the University of North Georgia on March 1, 1900. The chapter was closed in 1933, but reopened from 1998-2018.

Omega Chapter was founded at the University of Kentucky on June 5, 1901. The chapter closed in 2016 and reopened in 2018.

Alpha Alpha Chapter was founded at Duke University on November 26, 1901.

Alpha Beta Chapter was founded at Centenary College on March 8, 1902, but closed shortly after in 1904. The chapter reopened in 1947 and remained active until 1952.

Alpha Gamma Chapter was founded at Louisiana State University on December 11, 1902.

Alpha Delta Chapter was founded at Georgia Tech on February 20, 1904.

Alpha Epsilon Chapter was founded at North Carolina State University on October 31, 1904. The chapter closed in 2014. The chapter reopened in 2019 and closed 8 months later in August, 2019.

Alpha Zeta Chapter was founded at the University of Arkansas on November 2, 1904. The chapter closed in 1994, but reopened in 2000.

Alpha Eta Chapter was founded at the University of Florida on November 17, 1904. The chapter closed in 2000, but reopened the following year in 2001.

Alpha Theta Chapter was founded at West Virginia University on December 6, 1904. The chapter closed in 1909, but reopened in 1925 and remained open until 1998. Alpha Theta Chapter reopened for a second time in 2003, but closed again in 2018.

Alpha Iota Chapter was founded at Millsaps College on March 23, 1905. The chapter closed in 2000, but reopened in 2004.

Alpha Kappa Chapter was founded at Missouri University of Science and Technology on November 28, 1905.

Alpha Lambda Chapter was founded at Georgetown University on April 19, 1906. The chapter closed in 1921, but reopened in 1926.

Alpha Mu Chapter was founded at the University of Georgia on January 25, 1908. The chapter closed in 1915, but reopened in 1930.

Alpha Nu Chapter was founded at the University of Missouri on December 15, 1909.

Alpha Xi Chapter was founded at the University of Cincinnati on May 17, 1910.

Alpha Omicron Chapter was founded at Southwestern University on November 15, 1910. The chapter closed in 1933 and reopened in 1948.

Alpha Pi Chapter was founded at Samford University on March 10, 1911. The chapter closed in 1994.

Alpha Rho Chapter was founded on March 29, 1912. The chapter closed in 1970, but reopened the following year in 1971. The chapter closed in 2021.

Alpha Sigma Chapter was founded at the University of California, Berkeley on April 1, 1912.

Alpha Tau Chapter was founded at the University of Utah on March 20, 1912.

Alpha Upsilon Chapter was founded on April 12, 1912. The chapter closed in 1933, but reopened in 1999 and remained active until 2018.

Alpha Phi Chapter was founded at Iowa State University on February 17, 1913. The chapter closed in 1994, but reopened in 2000. The chapter closed in 2020.

Alpha Chi Chapter was founded at Syracuse University on March 15, 1913. The chapter closed in 2018.

Alpha Psi Chapter was founded at Rutgers University on April 17, 1913. The chapter closed in 1960, but reopened in 1995. The chapter closed in 2021.

Alpha Omega Chapter was founded at Kansas State University on June 14, 1913.

Beta Alpha Chapter was founded at Pennsylvania State University on October 11, 1913.

Beta Beta Chapter was founded at the University of Washington on May 12, 1914. The chapter closed in 1970 and reopened in 1981.

Beta Gamma Chapter was founded at the University of Kansas on June 6, 1914. The chapter closed in 2010 and reopened in 2016. The chapter closed in 2019.

Beta Delta Chapter was founded at the University of New Mexico on May 22, 1915.

Beta Epsilon Chapter was founded at Western Reserve University (now Case Western Reserve University) on December 17, 1915. The chapter closed in 1960.

Beta Zeta Chapter was founded at Southern Methodist University on April 11, 1916. The chapter closed in 2018.

Beta Eta Chapter was founded at the University of Illinois on March 24, 1917.

Beta Theta Chapter was founded at Cornell University on March 26, 1917. The chapter closed in 2010, but reopened in 2014.

Beta Iota Chapter was founded at Beloit College on February 17, 1917. The chapter closed in 1932, but reopened in 1947 and remained active until 1964.

Beta Kappa Chapter was founded at Emory University on December 6, 1919. The chapter closed in 2006, but reopened in 2011. The chapter closed in 2018.

Beta Lambda Chapter was founded at Washington University on December 6, 1919. The chapter closed in 1962.

Beta Mu Chapter was founded at the University of Texas on March 1, 1920.

Beta Nu Chapter was founded at Oregon State University on May 12, 1920. The chapter closed in 1936, but reopened in 1947 and remained active until 2000. The chapter then reopened for a second time in 2009, but closed in 2012. Beta Nu Chapter reopened for a third time in 2017.

Beta Xi Chapter was founded at the University of Wisconsin on May 14, 1920. The chapter closed in 1962, but reopened from 1980-1994. Beta Xi Chapter reopened for a second time in 2005

Beta Omicron Chapter was founded at the University of Oklahoma on September 24, 1920. The chapter closed in 2014. The chapter then reopened in 2019.

Beta Pi Chapter was founded at the University of Pennsylvania on November 30, 1920. The chapter closed in 1992, but reopened in 1997.

Beta Rho Chapter was founded at Colorado College on December 20, 1920. The chapter closed in 1933.

Beta Sigma Chapter was founded at Carnegie Mellon University on December 5, 1921.

Beta Tau Chapter was founded at the University of Michigan on February 7, 1922. The chapter closed in 1936, but reopened in 1968 and remained active until 1974. Beta Tau Chapter reopened a second time in 1992.

Beta Upsilon Chapter was founded at the University of Colorado on February 20, 1922. The chapter closed in 1970, but reopened in 1988 and remained open until 2014. Beta Upsilon Chapter reopened for a second time in 2018.

Beta Phi Chapter was founded at Purdue University on April 12, 1922.

Beta Chi Chapter was founded at the University of Minnesota on May 15, 1922. The chapter closed in 1936, but reopened in 1986 and remained open until 2000. Beta Chi Chapter reopened for a second time in 2008.

Beta Psi Chapter was founded at Mercer University on December 1, 1923. The chapter closed in 1941.

Beta Omega Chapter was founded at Knox College on March 1, 1924. The chapter closed in 1930.

Gamma Alpha Chapter was founded at the University of Alabama on March 27, 1924.

Gamma Beta Chapter was founded at the University of Nebraska on April 12, 1924. The chapter closed in 1941, but reopened in 1967 and remained active in 1978. Gamma Beta Chapter reopened for a second time in 1999.

Gamma Gamma Chapter was founded at the University of Denver on November 16, 1924. The chapter closed in 1972.

Gamma Delta Chapter was founded at the University of Arizona on December 1,1 924. The chapter closed in 2004 and reopened in 2009.

Gamma Epsilon Chapter was founded at Utah State University on June 11, 1925.

Gamma Zeta Chapter was founded at Wittenberg University on March 12, 1926. The chapter closed in 1986.

Gamma Eta Chapter was founded at the University of Southern California on June 3, 1926. The chapter closed in 1972 and reopened in 1993.

Gamma Theta Chapter was founded at Mississippi State University on May 27, 1927.

Gamma Iota Chapter was founded at the University of Mississippi on May 27, 1927.

Gamma Kappa Chapter was founded at Montana State University on October 12, 1928.

Gamma Lambda Chapter was founded at Lehigh University on October 26, 1929. The chapter closed in 2002, but reopened in 2010 and remained active until 2018.

Gamma Mu Chapter was founded at the University of New Hampshire on December 7, 1929. The chapter closed in 1992, but reopened in 1994 and remained active until 2018.

Gamma Nu Chapter was founded at the University of Iowa on October 26, 1929. The chapter closed in 2006, but reopened in 2013.

Gamma Xi Chapter was founded at Washington State University on December 19, 1929.

Gamma Omicron Chapter was founded at Ohio University on May 16, 1930. The chapter closed in 1974, but reopened in 1987 and remained active until 2012. Gamma Omicron Chapter reopened for a second time in 2019.

Gamma Pi Chapter was founded at the University of Oregon on February 11, 1931. The chapter closed in 1972, but reopened in 1977 and remained open until 1986. Gamma Pi Chapter reopened a second time in 1994, but closed again in 2012. The chapter reopened again in 2017.

Gamma Rho Chapter was founded at Northwestern University on February 6, 1932. The chapter closed in 2001, but reopened shortly thereafter in 2003.

Gamma Sigma Chapter was founded at the University of Pittsburgh on March 3, 1934.

Gamma Tau Chapter was founded at Rensselaer Polytechnic Institute on May 11, 1935.

Gamma Upsilon Chapter was founded at the University of Tulsa on June 6, 1936.

Gamma Phi Chapter was founded at Wake Forest University on April 17, 1939.

Gamma Chi Chapter was founded at Oklahoma State University on June 1, 1939.

Gamma Psi Chapter was founded at Louisiana Tech University on May 4, 1940.

Gamma Omega Chapter was founded at the University of Miami on May 18, 1940. The chapter closed in 2014, but reopened in 2019.

Delta Alpha Chapter was founded at George Washington University on February 22, 1941. The chapter closed in 1966, but reopened in 1990 and remained active until 1998. The chapter reopened for a second time in 2004. The chapter closed in 2020.

Delta Beta Chapter was founded at Bowling Green State University on June 21, 1942. The chapter closed in 1996, but reopened in 2005. The chapter closed in 2021.

Delta Gamma Chapter was founded at Miami University on February 15, 1947.

Delta Delta Chapter was founded at Florida Southern University on May 10, 1947. The chapter closed in 1984, but reopened in 1989 and remained active until 2002. The chapter reopened for a second time in 2011.

Delta Epsilon Chapter was founded at the University of Tennessee - Chattanooga on June 7, 1947. The chapter closed in 1990, but reopened in 1998.

Delta Zeta Chapter was founded at the University of Memphis on December 7, 1947. The chapter closed in 2006, but reopened in 2012 and remained active until 2018.

Delta Eta Chapter was founded at the University of Delaware on March 13, 1948. The chapter closed in 1972, but reopened shortly thereafter in 1975 and remained active until 1998. The chapter reopened a second time in 2002, but closed again in 2014. The chapter reopened in 2020.

Delta Theta Chapter was founded at Arkansas State University on March 13, 1948.

Delta Iota Chapter was founded at Marshall University on June 5, 1948. The chapter closed in 2019.

Delta Kappa Chapter was founded at San Diego State University on November 27, 1948. The chapter closed in 1972 and reopened in 1974. The chapter closed in 1988 and reopened for a second time in 2016.

Delta Lambda Chapter was founded at Florida State University on March 5, 1949. The chapter closed in 1988, but reopened in 2001.

Delta Mu Chapter was founded at the University of Southern Mississippi on December 10, 1949. The chapter closed in 2014, but reopened in 2019.

Delta Nu Chapter was founded at Wayne State University on February 4, 1950.

Delta Xi Chapter was founded at the University of Indiana on February 11, 1950. The chapter closed in 1954, but reopened in 1965 and remained active until 2002. The chapter reopened for a second time in 2007.

Delta Omicron Chapter was founded at Drake University on February 25, 1950. The chapter closed in 2016.

Delta Pi Chapter was founded at San Jose State University on March 4, 1950. The chapter closed in 1992, but reopened in 2002. The chapter closed in 2019.

Delta Rho Chapter was founded at Linfield College on March 12, 1950.

Delta Sigma Chapter was founded at Bradley University on May 6, 1950.

Delta Tau Chapter was founded at Arizona State University on March 31, 1951. The chapter closed in 2008, but reopened in 2014.

Delta Upsilon Chapter was founded at Stetson University on March 31, 1951. The chapter closed in 1990, but reopened in 2010.

Delta Phi Chapter was founded at the Colorado School of Mines on April 28, 1951. The chapter closed in 1964.

Delta Chi Chapter was founded at the University of Nebraska, Omaha on February 23, 1952.

Delta Psi Chapter was founded at the University of Maryland on June 8, 1962. The chapter closed in 1994, but reopened shortly thereafter in 1998 and remained active in 2012. Delta Psi Chapter was reopened a second time in 2017.

Delta Omega Chapter was founded at High Point University on February 7, 1953.

Epsilon Alpha Chapter was founded at Trinity College on May 2, 1953.

Epsilon Beta Chapter was founded at Valparaiso University on May 9, 1953. The chapter closed in 1998 and reopened in 2017.

Epsilon Gamma Chapter was founded at Texas Tech University on May 16, 1953. The chapter closed in 2008, but reopened in 2012.

Epsilon Delta Chapter was founded at North Texas University on March 12, 1955. The chapter closed in 1993 and reopened in 2008.

Epsilon Epsilon Chapter was founded at the University of Toledo on April 30, 1955. The chapter closed in 1996 and reopened in 2002.

Epsilon Zeta Chapter was founded at East Tennessee State University on May 14, 1955. The chapter closed in 2018.

Epsilon Eta Chapter was founded at the University of Houston on February 4, 1956. The chapter closed in 2018.

Epsilon Theta Chapter was founded at Colorado State University on November 10, 1956. The chapter was closed in 1974, but reopened in 1983 and remained active until 2016.

Epsilon Iota Chapter was founded at Southeast Missouri State University on May 3, 1958.

Epsilon Kappa Chapter was founded at Lamar University on May 10, 1958.

Epsilon Lambda Chapter was founded at Murray State University on May 17, 1958.

Epsilon Mu Chapter was founded at the East Carolina University on May 17, 1958. The chapter closed in 1974, but reopened in 1986 and remained active through 2000. The chapter reopened again in 2003. The chapter closed in 2019.

Epsilon Nu Chapter was founded at Georgia State University on February 25, 1960.

Epsilon Xi Chapter was founded at Case Institute of Technology (now Case Western Reserve University) on May 21, 1960. The chapter closed in 1998.

Epsilon Omicron Chapter was founded at Stephen F. Austin State University on December 17, 1960. The chapter closed in 2010, but reopened in 2015.

Epsilon Pi Chapter was founded at Sam Houston State University on February 4, 1961. The chapter closed in 1992, but reopened in 2009.

Epsilon Rho Chapter was founded at Idaho State University on May 20, 1961. The chapter closed in 1970.

Epsilon Sigma Chapter was founded at the University of Tennessee at Martin on December 9, 1961.

Epsilon Tau Chapter was founded at Eastern New Mexico University on November 17, 1962. The chapter closed in 1990.

Epsilon Upsilon Chapter was founded at Gannon University on December 1, 1962.

Epsilon Phi Chapter was founded at Central Arkansas University on February 23, 1963.

Epsilon Chi Chapter was founded at Pittsburgh State University on April 6, 1963.

Epsilon Psi Chapter was founded at Western Michigan University on April 27, 1963. The chapter closed in 1996 and reopened in 2014.

Epsilon Omega Chapter was founded at East Central University on October 25, 1963.

Zeta Alpha Chapter was founded at Kettering University on November 10, 1963.

Zeta Beta Chapter was founded at Delta State University on December 15, 1963.

Zeta Gamma Chapter was founded at Eastern Illinois University on April 12, 1964.

Zeta Delta Chapter was founded at Parsons College on May 3, 1964. The chapter closed in 1974 when the College itself closed.

Zeta Epsilon Chapter was founded at Western Kentucky University on February 6, 1965.

Zeta Zeta Chapter was founded at Southwestern Oklahoma State University on March 13, 1965. The chapter closed in 1990.

Zeta Eta Chapter was founded at the University of Arkansas, Little Rock on May 15, 1965. The chapter closed in 2021.

Zeta Theta Chapter was founded at Texas State University on December 5, 1965. The chapter closed in 2004, but reopened in 2010 and remained active until 2018.

Zeta Iota Chapter was founded at Old Dominion University on February 13, 1966. The chapter closed in 1986, but reopened in 1995.

Zeta Kappa Chapter was founded at Ferris State University on April 24, 1966.

Zeta Lambda Chapter was founded at Adrian College on May 8, 1966. The chapter closed in 1978 and reopened in 2014.

Zeta Mu Chapter was founded at the University of Idaho on May 15, 1966. The chapter closed in 2008, but reopened in 2013.

Zeta Nu Chapter was founded at Eastern Washington University on November 18, 1966. The chapter closed in 1978.

Zeta Xi Chapter was founded at Western Carolina University on February 12, 1967. The chapter closed in 2015. The chapter reopened in 2021.

Zeta Omicron Chapter was founded at California State University, Northridge on May 21, 1967. The chapter closed in 2015.

Zeta Pi Chapter was founded at the University of South Florida on March 1, 1968.

Zeta Rho Chapter was founded at the University of North Dakota on March 1, 1968.

Zeta Sigma Chapter was founded at Florida Tech University on March 1, 1968.

Zeta Tau Chapter was founded at Eastern Kentucky University on February 9, 1969. The chapter closed in 2012, but reopened in 2018.

Zeta Upsilon Chapter was founded at Concord University on February 15, 1969. The chapter closed in 1986.

Zeta Phi Chapter was founded at the University of Missouri, St. Louis on May 4, 1969. The chapter closed in 2021.

Zeta Chi Chapter was founded at Missouri State University on May 11, 1969. The chapter closed in 2004, but reopened in 2012.

Zeta Psi Chapter was founded at Nicholls State University on May 10, 1969. The chapter closed in 1988.

Zeta Omega Chapter was founded at the University of Louisiana, Lafayette on May 11, 1969. The chapter closed in 1990 and reopened in 2007.

Eta Alpha Chapter was founded at Clemson University on February 1, 1970. The chapter closed in 2004, but reopened in 2007. The chapter closed in 2016 and reopened for a second time in 2020.

Eta Beta Chapter was founded at Seton Hall University on February 15, 1970. The chapter closed in 2000.

Eta Gamma Chapter was founded at the University of Windsor on March 1, 1970, but closed just two years later in 1972.

Eta Delta Chapter was founded at the Massachusetts Institute of Technology on May 24, 1970. The chapter closed in 1982.

Eta Epsilon Chapter was founded at Angelo State University on February 19, 1971.

Eta Zeta Chapter was founded at Middle Tennessee State University on March 30, 1971. The chapter closed in 2012.

Eta Eta Chapter was founded at Morehead State University on March 28, 1971. The chapter closed in 1986, but reopened in 2001. The chapter closed in 2020.

Eta Theta Chapter was founded at Weber State University on April 18, 1971. The chapter closed in 2008.

Eta Iota Chapter was founded at Woodbury University on May 2, 1971, but closed in 1976.

Eta Kappa Chapter was founded at the University of South Alabama on May 8, 1971.

Eta Lambda Chapter was founded at Robert Morris University on May 8, 1971, but closed in 1974.

Eta Mu Chapter was founded at Georgia Southern University, Armstrong on May 15, 1971. The chapter closed in 1982, but reopened in 2007. The chapter closed in 2021.

Eta Nu Chapter was founded at Northern Illinois University on May 23, 1971. The chapter closed in 2014.

Eta Xi Chapter was founded at the University of Alabama, Birmingham on February 5, 1972. The chapter closed in 1986.

Eta Omicron Chapter was founded at the University of Louisiana, Monroe on March 18, 1972.

Eta Pi Chapter was founded at the University of West Florida on March 25, 1972. The chapter closed in 1982 and reopened in 2012.

Eta Rho Chapter was founded at Northern Kentucky University on March 15, 1972.

Eta Sigma Chapter was founded at the University of West Georgia on May 6, 1972. The chapter closed in 1996, but reopened in 2001.

Eta Tau Chapter was founded at Austin Peay State University on May 6, 1972. The chapter closed in 2010, but reopened in 2015.

Eta Upsilon Chapter was founded at the University of Texas, Arlington on January 26, 1973. The chapter closed in 2000, but reopened in 2006.

Eta Phi Chapter was founded at the University of Central Florida on February 24, 1973. The chapter closed in 2006.

Eta Chi Chapter was founded at Valencia College on February 24, 1973. The chapter closed in 1978.

Eta Psi Chapter was founded at Texas Wesleyan University on December 8, 1973. The chapter closed in 1982.

Eta Omega Chapter was founded at the University of North Carolina, Pembroke on February 9, 1974. The chapter closed in 1986, but reopened in 2010 and remained active until 2014.

Theta Alpha Chapter was founded at the University of North Alabama on March 30, 1974.

Theta Beta Chapter was founded at the University of Montevallo on April 7, 1974. The chapter closed in 2012.

Theta Gamma Chapter was founded at Georgia College and State University on April 27, 1974.

Theta Delta Chapter was founded at Francis Marion University on May 19, 1974. The chapter closed in 2004.

Theta Epsilon Chapter was founded at Northeastern State University on March 8, 1975.

Theta Zeta Chapter was founded at the University Northern Iowa on October 11, 1975.

Theta Eta Chapter was founded at Loyola University Marymount on February 14, 1976. The chapter closed in 1996.

Theta Theta Chapter was founded at Texas A&M University on April 24, 1976. The chapter closed in 2000, but reopened in 2011.

Theta Iota Chapter was founded at the Tyler Junior College on April 25, 1976. The chapter closed in 1986.

Theta Kappa Chapter was founded at Indiana University Southeast on April 9, 1977.

Theta Lambda Chapter was founded at Creighton University on April 16, 1977. The chapter closed in 2012, but was reopened in 2017. The chapter closed in 2019.

Theta Mu Chapter was founded at the University of Massachusetts on April 16, 1977. The chapter closed in 2002, but was reopened in 2008. The chapter closed in 2019.

Theta Nu Chapter was founded at Baylor University on April 30, 1977. The chapter closed in 2010.

Theta Xi Chapter was founded at Texas A&M University, Commerce on March 25, 1978.

Theta Omicron Chapter was founded at Indiana State University on March 3, 1979.

Theta Pi Chapter was founded at the University of Alabama, Huntsville on March 24, 1979.

Theta Rho Chapter was founded at Northern Arizona University on March 29, 1980. The chapter closed in 2010, but reopened in 2020.

Theta Sigma Chapter was founded at Winthrop University on April 5, 1980.

Theta Tau Chapter was founded at California State University, Sacramento on April 25, 1981.

Theta Upsilon Chapter was founded at Tennessee Tech University on May 16, 1981.

Theta Phi Chapter was founded at Wichita State University on April 24, 1982. The chapter closed in 2000.

Theta Chi Chapter was founded at Villanova University on January 28, 1984. The chapter closed in 2000.

Theta Psi Chapter was founded at Chapman University on March 14, 1985.

Theta Omega Chapter was founded at the University of California, Davis on May 3, 1985.

Iota Alpha Chapter was founded at the University of Wyoming on April 24, 1986. The chapter closed in 2014, but reopened in 2016.

Iota Beta Chapter was founded at California State University, Fresno on December 6, 1986.

Iota Gamma Chapter was founded at the University of Nebraska, Kearney on May 10, 1987.

Iota Delta Chapter was founded at Rose-Hulman Institute of Technology on January 30, 1988.

Iota Epsilon Chapter was founded at California State University, Long Beach on March 18, 1988. The chapter closed in 1996 and reopened in 2009.

Iota Zeta Chapter was founded at Randolph-Macon College on April 16, 1988. The chapter closed in 2004.

Iota Eta Chapter was founded at the University of Nevada, Reno on November 12, 1988. The chapter closed in 2004.

Iota Theta Chapter was founded at Cal Poly San Luis Obispo on April 7, 1989. The chapter closed in 2018.

Iota Iota Chapter was founded at Michigan State University on May 12, 1989.

Iota Kappa Chapter was founded at the University of California, Santa Barbara on September 23, 1989. The chapter closed in 2010.

Iota Lambda Chapter was founded at Columbia University on January 26, 1990. The chapter closed in 2019.

Iota Mu Chapter was founded at Southern Illinois University on April 14, 1990. The chapter closed in 2004.

Iota Nu Chapter was founded at St. Louis University on April 28, 1990. The chapter closed in 2008.

Iota Xi Chapter was founded at the University of Chicago on August 10, 1990. The chapter closed in 2006. The chapter reopened in 2021.

Iota Omicron Chapter was founded a Santa Clara University on April 13, 1991.

Iota Pi Chapter was founded at the University of California, Los Angeles on May 24, 1991. The chapter closed in 2016.

Iota Rho Chapter was founded at Saint Josephs College on September 21, 1991. The chapter closed in 2012.

Iota Sigma Chapter was founded at James Madison University on March 22, 1992.

Iota Tau Chapter was founded at Johns Hopkins University on April 10, 1993. The chapter closed in 2016.

Iota Upsilon Chapter was founded at Georgia Southern University on June 26, 1993.

Iota Phi Chapter was founded at the University of Montana on December 11, 1993. The chapter closed in 2000.

Iota Chi Chapter was founded at the University of Connecticut on February 5, 1994. The chapter closed in 2016.

Iota Psi Chapter was founded at Appalachian State University on April 2, 1994.

Iota Omega Chapter was founded at the University of Western Ontario on April 9, 1994.

Kappa Alpha Chapter was founded at Illinois State University on April 23, 1994. The chapter closed in 2016.

Kappa Beta Chapter was founded at Princeton University on May 15, 1994. The chapter closed in 2010.

Kappa Gamma Chapter was founded at Florida International University on May 21, 1994. The chapter closed in 2014.

Kappa Delta Chapter was founded at Northeastern University in Boston, Massachusetts on June 25, 1994.

Kappa Epsilon Chapter was founded at Rockhurst University on December 17, 1994.

Kappa Zeta Chapter was founded at the University of Louisville on January 21, 1995.

Kappa Eta Chapter was founded at New Mexico State University on March 25, 1995.

Kappa Theta Chapter was founded at George Mason University on September 30, 1995.

Kappa Iota Chapter was founded at the University of Rhode Island on October 13, 1995. The chapter closed in 2000 and reopened in 2009.

Kappa Kappa Chapter was founded at the University of North Carolina, Charlotte on February 24, 1996. The chapter closed in 2014.

Kappa Lambda Chapter was founded at Western Illinois University on March 16, 1996. The chapter closed in 2016.

Kappa Mu Chapter was founded at Wilfrid Laurier University on March 23, 1996.

Kappa Nu Chapter was founded at Pacific University on April 13, 1996.

Kappa Xi Chapter was founded at the University on Albany on November 16, 1996. The chapter closed in 2004.

Kappa Omicron Chapter was founded at the University of Nevada, Las Vegas on January 18, 1997.

Kappa Pi Chapter was founded at the University of South Dakota on March 15, 1997.

Kappa Rho Chapter was founded at Coastal Carolina University on April 19, 1997. The chapter closed in 2006. It reopened in 2016, but closed again in 2018.

Kappa Sigma Chapter was founded at Slippery Rock University on April 26, 1997. The chapter closed in 2020.

Kappa Tau Chapter was founded at the University of Maine on May 3, 1997. The chapter closed in 2016.

Kappa Upsilon Chapter was founded at American University on October 18, 1997.

Kappa Phi Chapter was founded at the University of California, San Diego on November 1, 1997.

Kappa Chi Chapter was founded at Plymouth State University on September 19, 1998. The chapter closed in 2004.

Kappa Psi Chapter was founded at Ca Poly Pomona on October 3, 1998. The chapter closed in 2012, but reopened in 2018.

Kappa Omega Chapter was founded at the University of Wisconsin, Whitewater on December 12, 1998. The chapter closed in 2018.

Lambda Alpha Chapter was founded at the University of California, Riverside on January 22, 2000. The chapter closed in 2016.

Lambda Beta Chapter was founded at Florida Atlantic University on February 19, 2000. The chapter closed in 2014, but reopened in 2020.

Lambda Gamma Chapter was founded at Montclair State University on April 29, 2000.

Lambda Delta Chapter was founded at the University of Vermont on April 1, 2000.

Lambda Epsilon Chapter was founded at the University of Alberta on November 11, 2000.

Lambda Zeta Chapter was founded at Drexel University on November 10, 2001.

Lambda Eta Chapter was founded at William Woods University on November 17, 2001.

Lambda Theta Chapter was founded at the University of Dayton on December 1, 2001. The chapter closed in 2019.

Lambda Iota Chapter was founded at the University of Central Oklahoma on April 13, 2002.

Lambda Kappa Chapter was founded at the University of Charleston on April 3, 2004.

Lambda Lambda Chapter was founded at the University of California, Irvine on April 17, 2004.

Lambda Mu Chapter was founded at Embry-Riddle Aeronautical University on April 23, 2005.

Lambda Nu Chapter was founded at Boston University on April 8, 2006.

Lambda Xi Chapter was founded at Florida Gulf Coast University on April 22, 2006.

Lambda Omicron Chapter was founded at Rogers State University on October 14, 2006. The chapter was closed in 2012.

Lambda Pi Chapter was founded at Hofstra University on October 27, 2007.

Lambda Rho Chapter was founded at the University of North Carolina, Greensboro on April4, 2009.

Lambda Sigma Chapter was founded at Trinity University on December 5, 2009. The chapter closed in 2016.

Lambda Tau Chapter was founded at DePaul University on January 30, 2010. The chapter closed in 2014.

Lambda Upsilon Chapter was founded at McNeese State University on February 27, 2010.

Lambda Phi Chapter was founded at the University of North Carolina, Wilmington on April 17, 2010.

Lambda Chi Chapter was founded at Virginia Commonwealth University on April 17, 2010.

Lambda Psi Chapter was founded at California State University, Chico on October 30, 2010.

Lambda Omega Chapter was founded at Towson University on April 16, 2011.

Mu Alpha Chapter was founded at Rowan University on May 21, 2011.

Mu Beta Chapter was founded at Kennesaw State University on March 24, 2012. The chapter closed in 2018.

Mu Gamma Chapter was founded at Binghamton University on March 16, 2013.

Mu Delta Chapter was founded at McMaster University on March 6, 2013.

Mu Epsilon Chapter was founded at California State University, Fullerton on May 11, 2013.

Mu Zeta Chapter was founded at Ramapo College on July 20, 2013. The chapter closed in 2018.

Mu Eta Chapter was founded at Methodist University on November 16, 2013.

Mu Theta Chapter was founded at Kent State University on November 23, 2013.

Mu Iota Chapter was founded at Columbus State University on May 31, 2014. The chapter closed in 2019.

Mu Kappa Chapter was founded at Northwestern State University on October 25, 2014.

Mu Lambda Chapter was founded at West Chester University on November 22, 2014.

Mu Mu Chapter was founded at Jacksonville University on April 11, 2015.

Mu Nu Chapter was founded at Southeastern Louisiana University on June 27, 2015.

Mu Xi Chapter was founded at Bridgewater State University on September 26, 2015. The chapter closed in 2020.

Mu Omicron Chapter was founded at South Dakota State University on August 20, 2016.

Mu Pi Chapter was founded at the United State Military Academy, West Point, on October 15, 2016. The chapter closed in 2021.

Mu Rho Chapter was founded at Christopher Newport University on April 30, 2017.

Mu Sigma Chapter was founded at Arkansas Tech University on October 14, 2017.

Mu Tau Chapter was founded at the University of Northern Colorado on April 28, 2018.

Mu Upsilon Chapter was founded at Jacksonville State University on October 31, 2020.

Mu Phi Chapter was founded at Northwest Missouri State University on April 17, 2021.

Mu Chi Chapter was founded at California State University-San Bernardino on May 8, 2021.