average age range of sorority members?

I'm transferring to LSU to finish my bachelors in early childhood education and am considering transferring Phi Mu chapters as well once I get there.. But considering I'm 25, I don't want to be way older then the other chapter members, or the other members of Greek life in general for that matter... Any idea what the average age range for sorority members at LSU are.. Particularly Phi Mu? I really love Phi Mu which is why I wanted to transfer chapters and stay in another year or two.