Here is the link for the UNC-Chapel Hill Panhellenic site
http://greeks.unc.edu/join/panhellenic/index.html
There's even a stats page regarding recruitment.
The groups currently on campus are:
Alpha Chi Omega
Alpha Delta Pi
Chi Omega
Delta Delta Delta
Kappa Delta
Kappa Kappa Gamma
Pi Beta Phi
Sigma Sigma Sigma
Zeta Tau Alpha
Hope that helps!