I agree with all previous posts that a college sorority is a wonderful experience but very time consuming. There are other sororities that give the same experience (friends, philanthropy, socials etc) that are less time consuming. Beta Sigma Phi is one. I'm a member and love it. We have a meeting once a month, social once a month and a philanthropic event or project once a month. I'm the youngest in my chapter and my BSP sisters come from all walks of life (single never married, married, divorced, kids, no kids)
http://www.betasigmaphi.org/contacts.php is the contact link. Call them, email them etc.