Ok so I jumped on the bandwagon, but hey I figured the Big 10 can't be left out!
11 Universities are represented in the Big 10:
Illinois
Indiana
Iowa
Michigan
Michigan State
Minnesota
Northwestern
Ohio State
Penn State
Purdue
Wisconsin
Alpha Chi Omega, Alpha Phi, Delta Gamma, Kappa Alpha Theta, Kappa Kappa Gamma, and Pi Beta Phi are represented at all 11 Universities
Chi Omega, Delta Delta Delta, and Gamma Phi Beta are represented at 10 Universities
Delta Zeta and Sigma Delta Tau at 7 Universities
Alpha Delta Pi, Alpha Epsilon Phi, Alpha Gamma Delta, Alpha Omicron Pi, and Kappa Delta at 6 Universities
Sigma Kappa, Alpha Xi Delta, and Zeta Tau Alpha at 5 Universities
Phi Mu at 4 Universities
Delta Phi Epsilon and Sigma Sigma Sigma at 1 University
That is all......