Everyone my age either has three kids or goes to OSU. OSU kids only go to OSU venues and bars.
While I don't know Columbus, I do know its type. My suggestion for you is to move to a more cosmopolitan city where you'll find plenty of single, interesting professionals and artistic types. In my opinion, it's worth the increased cost of living.
If you aren't willing to do that, your next best option if you're college age is to take a class or join a group at OSU.