I believe Purdue also has a large number of NIC orgs. I worked witht eh exec VP of the NIC this summer at UIFI and I remember a bunch of people talking about it being one of the most successful Greek systems as far as being what it should be.
I also know the greek advisor at PSU and I just feel bad for her. Having all those NIC and NPC groups is not necessarily a good thing. There are tons of problems there to go with all those groups.

What is the "Divine 9?"

They are the NPHC orgs:

Alpha Phi Alpha
Kappa Alpha Psi
Omega Psi Phi
Phi Beta Sigma
Iota Phi Theta

Alpha Kappa Alpha
Delta Sigma Theta
Zeta Phi Beta
Sigma Gamma Rho

Out on the West Coast, I think University of Washington has the busiest Greek system.

There are 27 active fraternities. There were 29 but 2 are either kicked to the curb or suspended

Here is the link
http://depts.washington.edu/ovpsa/greek/fratstat.html

There are 16 sororities

Here is the link
http://depts.washington.edu/ovpsa/greek/sorstat.html

I think they also have SAI, TBS and SA. IF my info is correct-those three are very social and not just honorary/ professional. So, I would count them. But I know it is different on different campuses.....seems like something for everyone though!

It would make A LOT of sense for SA to be at UGA and they might be. I never saw them though. :( As for SAI and TBS -- I know that SAI has a UGA chapter, along with PMA and KKPsi, but I'm not sure about TBS.

I do know that the only time I ever saw or heard anything from these groups is when I went to the music buildings for voice lessons. They had event calendars, membership info and other stuff posted all over the place. But, I don't remember seeing letters on campus or any sign of them anywhere but around the music buildings.

There are also a number of organizations that have developed out of the Redcoat marching band. My brother played the tuba in high school and then the sousaphone in the Redcoats. He was a member of ASS (Alpha Sigma Sigma - Athens Sousa Society). I always got a kick out of that! The group intended to be called ASS because they thought it was funny - they had a great organization...lots of events, mostly Redcoat parties.

ETA: OOPS - I just went and looked. Sigma Alpha is, indeed, at UGA. I NEVER heard from them at all when I was there though. And I'm definitely not of the "real greek/fake greek" crew. So, if I had seen them, I would have acknowledged them.

I know there was a pre-vet/vet/something or other co-ed fraternity that had a house as well.

For the size of my school (14,000 undergrads), I believe our Greek system is pretty big.

Indiana University of PA

11 NPC Sororities
Alpha Gamma Delta
Alpha Sigma Alpha
Alpha Sigma Tau
Alpha Xi Delta
Delta Gamma
Delta Phi Epsilon
Delta Zeta
Sigma Kappa
Sigma Sigma Sigma
Theta Phi Alpha
Zeta Tau Alpha

15 Fraternities
Acacia
Alpha Chi Rho
Chi Phi
Delta Sigma Phi
Delta Tau Delta
Kappa Delta Rho
Phi Kappa Psi
Phi Kappa Tau
Phi Mu Delta
Phi Lambda Phi
Sigma Chi
Sigma Pi
Sigma Tau Gamma
Theta Chi

NPHC
Alpha Kappa Alpha
Alpha Phi Alpha
Delta Sigma Tau
Zeta Phi Beta
Sigma Gamma Rho
Omega Psi Phi