I've been running online games for a few years now but I'd like to do a live campaign. Is there a forum or something people use to find local players or games when you don't live in a big city?

 Do you have any gaming stores in your area?  They may well allow games to meet in-store, or at least have a bulletin board where you can post your interest.

Also, even on the LFG game thread on these forums, you can specify you're looking for a FtF game.

Definately look at local gaming stores.

Alternatively, you could put an ad in the local paper. You could also look at social media groups, you might get lucky.