Hmmm good question! Are there any current bitcoin related resources IN town? Like a bitcoin atm or something? You could start there by leaving a flyer/contact info to begin wrangling the local enthusiasts.

If not, then it's worth honing in on any groups that are tangential to Bitcoin - gold bugs, freedom oriented & libertarian groups, technical minded people, etc. Basically you need a small starting point and you can grow from there organically with a bit of outreach.