Fraternity and Sorority Timelines (* = closed, ~ = closed then reopened, x = local, + = org. a local)

Fratenities

•   1875 Phi Delta Theta ~
• 1883 Sigma Chi
• 1888 Beta Theta Pi
• 1893 Sigma Alpha Epsilon, Delta Tau Delta
• 1895 Phi Kappa Psi, Chi Phi ~
• 1897 Alpha Tau Omega, Kappa Sigma*
• 1898 Delta Upsilon, Phi Gamma Delta
• 1905 Alpha Kappa Alpha Kappa (Acacia)
• 1909 Sigma Nu
• 1911 Farm House, Sigma Phi Epsilon
• 1915 Pi Kappa Psi*, Pi Kappa Phi *
• 1917 Alpha Gamma Rho
• 1921 Lambda Chi Alpha
• 1922 Zeta Beta Tau*
• 1924 Pi Kappa Alpha+(Bushnell Guild)
• 1925 Beta Sigma Phi*, Delta Sigma Phi*, Theta Chi~, Tau Kappa Epsilon +~(Alpha Delta)
• 1926 Sigma Alpha Mu*
• 1927 Theta Xi
• 1929 Beta Sigma Psi~
• 1953 Alpha Gamma Sigma
• 1963 Triangle
• 1976 Alpha Gamma Nu x
• 2007 Phi Beta Sigma

Sororities

• 1884 Kappa Kappa Gamma
• 1886 Kappa Alpha Theta
• 1887 Delta Gamma
• 1894 Delta Delta Delta
• 1895 Pi Beta Phi
• 1903 Alpha Omicron Pi, Chi Omega
• 1906 Alpha Phi
• 1912 Alpha Xi Delta
• 1914 Gamma Phi Beta
• 1915 Alpha Delta Pi +~ (Owasco)
• 1920 Kappa Delta
• 1921 Phi Mu
• 1926 Alpha Chi Omega
• 1988 Phi Beta Chi*
• Dates Missing: Delta Zeta*, Zeta Tau Alpha*, Sigma Kappa*