Acacia
- Chapter name: Illinois
Date founded: 1906
Location and date of house(s): 211 E. Daniel, Champaign (2005-present; built in 1908 as chapter house of Sigma Alpha Epsilon fraternity) - Former residences: 505 E. Green, Champaign (1907-1914); 501 E. Daniel, Champaign (1914-1985, 1987-1991); 809 S. Fifth, Champaign (1986-1987); 907 S. Third, Champaign (1991-1992, 1994-2005); 911 S. Third, Champaign (1992-1994)
Alpha Chi Rho
- Chapter name: Phi Kappa
- Date founded: 1916
- Location and date of house(s): 311 E. Armory, Champaign (1921-1943, 1945-2000, 2002-present)
- Former residences: 104 E. John, Champaign (1916-1920); 908 S. Fourth, Champaign (1920-1921); 1109 S. Fourth, Champaign (1944-1945)
Alpha Delta Phi
- Chapter name: Illinois
- Date founded: 1911
- Location and date of house(s): 310 E. John, Champaign (1924-1943, 1947-present)
- Former residences: 206 E. Green, Champaign (1911-1913); 508 E. Green, Champaign (1913-1915); 204 E. Green, Champaign (1915); 709 S. Fourth, Champaign (1915-1923); 205 E. Green, Champaign (1923-1924);504 E. John, Champaign (1944); 1009 W. California, Urbana (1944-1947)
Alpha Epsilon Pi
- Chapter name: Delta
- Date founded: 1920
Location and date of house(s): 110 E. Chalmers, Champaign (1963-present; new structure built on property in 2007) - Former residences: 210 E. Green, Champaign (1920-1922); 607 S. Fourth, Champaign (1922-1923); 406 E. Healey, Champaign (1923-1926); 1112 S. Third, Champaign (1926-1930); 302 E. Gregory, Champaign (1930-1943, 1945-1963); 1000 W. Illinois, Urbana (1943-1944); 1204 W. Green, Urbana (1944)
Alpha Gamma Rho
- Alpha Gamma Rho
- Chapter name: Alpha
- Date founded: 1906
- Location and date of house(s): 58 E. Gregory, Champaign (1927-1943, 1945-present)
- Former residences: 702 S. Third, Champaign (1915-1916); 306 E. Green, Champaign (1916-1927)
Alpha Gamma Sigma
- Chapter name: IlliDell
- Date founded: 1981
- Location and date of house(s): 303 E. Chalmers, Champaign (1981-present; built in 1922 as Chi Phi chapter house)
Alpha Kappa Lambda
- Chapter name: Gamma
- Date founded: 1921
- Location and date of house(s): 401 E. Daniel, Champaign (1928-1943, 1944-2008, 2010-present)
- Former residences: 606 W. Ohio St., Urbana (2008-2010); 407 E. Daniel, Champaign (1921-1928); 409 E. Daniel, Champaign (1943-1944)
Alpha Sigma Phi
- Chapter name: Eta
- Date founded: 1908
- Location and date of house(s): 211 E. Armory, Champaign (1928-1943, 1946-2009, 2010-present)) [House torn down during and rebuild during 2009-10, chapter displaced]
- Former residences: 210 E. Green, Champaign (1908-1911); 404 E. Daniel, Champaign (1911-1913, 1915-1921); 310 E. Daniel, Champaign (1913-1915); 313 E. John, Champaign (1921-1928)
Alpha Tau Omega
- Chapter name: Illinois Gamma Zeta
- Date founded: 1895
- Location and date of house(s): 1101 W. Pennsylvania, Urbana (1931-1943, 1945-present)
- Former residences: 505 E. Green, Champaign (1900-1906); 405 E. John, Champaign (1906-1929); 602 E. Armory, Champaign (Newman Hall–1929-1930); 1009 W. Pennsylvania, Urbana (1943); 210 E. John, Champaign (1944-1945)
Alpha Xi Delta
- Chapter name: Kappa
- Date founded: 1905 (Closed: 1995, Recolonized: 2009)
- Location and date of house(s): 1004 S. Second St. (former residence of Phi Sigma Kappa).
- Former residences:
Beta Sigma Psi
- Chapter name: Alpha
- Date founded: 1925
- Location and date of house(s): 706 W. Ohio, Urbana (1969-present; built in 1928 as chapter house of Phi Mu sorority)
- Former residences: 309 E. John, Champaign; (1925-1929); 110 E. Green, Champaign (1929-1930); 52 E. Armory, Champaign (1930-1943); 1112 W. California, Urbana (1955-1956); 806 S. Fifth, Champaign (1956-1959); 1004 W. Nevada, Urbana (1959-1969)
Beta Theta Pi
- Chapter name: Sigma Rho
- Date founded: 1902 (closed 2009)
- Location and date of house(s): Chapter closed by national fraternity in Dec. 2009
- Former residences: 202 E. Daniel, Champaign (1912-1943, 1944-2009); 411 E. John, Champaign (1902); 209 E. Green, Champaign (1902-1903); 305 E. Green, Champaign (1903-1912); 1103 W. Illinois, Urbana (1943-1944)