[irishpipes]

University of Illinois does not have Sigma Sigma Sigma, Alpha Sigma Tau, Alpha Sigma Alpha, Alpha Xi Delta, Zeta Tau Alpha, Delta Phi Epsilon, or Theta Phi Alpha. (But we have had all but AST at some point - they are not currently active.) ZTA, DPE, AZD, and SSS all closed while I was there.

By the way, AlphaFrog, at U of I, Panhellenic was referred to as "Panhel" by everyone. A colloquialism of sorts. It was not considered disrespectful at all. Perhaps the OP comes from a similar environment.

ETA: U of I brags that it is the largest Greek system in the world. That would be because of our Fraternities too - not just NPC sororities. When I was there we had 66 men's fraternities and 22 NPC sororities. Plus, in addition to the large number of chapters, the campus is largely (ridiculously) Greek with many, many, single-letter chapters, a couple of Alpha chapters, and very large average membership sizes. For example, Penn State I think has the same number of NPC chapters as U of I, but quota at Penn State last year was 18 - at U of I it was 53. I think the sheer numbers at Illinois are amazing.

Illinois
Pi Beta Phi 1895
Kappa Alpha Theta 1895
Kappa Kappa Gamma 1899
Alpha Chi Omega 1899
Chi Omega 1900
Alpha Xi Delta 1905-?/1983-1988?
Delta Gamma 1906
Sigma Kappa 1906
Alpha Omicron Pi 1911
Alpha Delta Pi 1912
Gamma Phi Beta 1913
Alpha Gamma Delta 1918
Theta Phi Alpha 1919-1953
Alpha Epsilon Phi 1920
Delta Delta Delta 1920
Kappa Delta 1921
Phi Mu 1921
Delta Zeta 1921-?/1988
Zeta Tau Alpha 1921-1988
Alpha Phi 1922
Phi Sigma Sigma 1923
Sigma Delta Tau 1926
Delta Phi Epsilon 1927-1988
Sigma Sigma Sigma 1957-1987?
Alpha Sigma Alpha 1982-1992



Penn State
Chi Omega 1926
Alpha Omicron Pi 1929-1973/1982
Phi Mu 1929
Theta Phi Alpha 1929-1969
Delta Gamma 1930
Kappa Kappa Gamma 1930
Kappa Alpha Theta 1931
Alpha Chi Omega 1932
Gamma Phi Beta 1932
Alpha Epsilon Phi 1937-1978
Kappa Delta 1939
Zeta Tau Alpha 1939
Alpha Xi Delta 1942
Sigma Delta Tau 1943
Delta Zeta 1946
Phi Sigma Sigma 1946-1970
Alpha Gamma Delta 1947-2000
Delta Delta Delta 1947
Pi Beta Phi 1953
Sigma Sigma Sigma 1954
Alpha Phi 1958
Alpha Delta Pi 1958-?/1991
Delta Phi Epsilon 1960-1966
Alpha Sigma Alpha 1962
Sigma Kappa 1992

Those lists aren't from any official source, so they probably are not 100% accurate.