Yes. I can't speak for you Northerners, but when I was applying to medical schools down here, one of the main things my interviewers asked about was my sorority experience. One of my interviewers was an AEPi at UGA, and we spent the entire interview time plus twenty extra minutes talking about being greek at an SEC school. I got in.
One of the main reasons on why I'm considering joining a sorority is because I primarily want to bond with others. I'm an only child and have few friends right now, so I really don't get to bond with much people as I'd like to.