Are you from more of a "bro" state or a "dude" state? These maps by Quartz will tell you based on which term people in your area prefer. They'll also reveal if you're from one of the strange places where most people say "buddy," "fella," or "pal."
Forensic linguist Jack Grieve made the maps by analyzing tweets based on their location. The photo above shows the raw data for "dude" usage, while the photos below undergo more analysis to create hot spots. Check them out to see which term your area prefers.