The University of the Pacific has been the setting for many Hollywood movies, including Raiders of the Lost Ark. Which I'm sure is what brings in the hotties. That or the beautiful California weather.
Either way, Pacific boasts a 58% female population, making it an ideal setting for any guy.
24. Ohio State University
Ohio State is usually the largest University in the country (sometimes slipping to number two behind Texas), so it's pretty much impossible not to find gorgeous girls. When you've got a sample size of 25k+ you're always going to be in good shape.
The feeling around campus is pretty upbeat, and there are many places to go searching for a specific type of girl.