Here are the lists for sororities again from the Fraternities Executives Association's web site. Last updated on Monday, May 17, 2004.
http://www.fea-inc.org/soror.htm
NOTE: Not all sororities have their statistics listed thus the lists below may not be complete.
Sororities with 100 plus chapters
179 Alpha Gamma Delta
171 Chi Omega
165 Delta Zeta
144 Delta Gamma
143 Alpha Phi
135 Delta Delta Delta
132 Alpha Delta Pi
130 Alpha Chi Omega
125 Kappa Delta
122 Kappa Alpha Theta
120 Phi Mu
112 Alpha Xi Delta
110 Phi Sigma Sigma
107 Sigma Kappa
105 Sigma Sigma Sigma
Sororities with 100,000 plus initiates
240,000 Chi Omega
190,000 Delta Gamma
189,000 Alpha Chi Omega
185,000 Alpha Delta Pi
180,000 Kappa Delta
156,005 Alpha Phi
150,761 Phi Mu
135,862 Sigma Kappa
130,000 Alpha Gamma Delta
130,000 Alpha Xi Delta