Namely in Topeka, Kansas, USA.
Just finished Lewis' book a few days ago--overall, a real nice introduction to the subject, though I have a few disagreements.
Anyway, I'm 54, male, and have a background in history (didnt quite get my BA). I've been interested in survivalism from way back in the 1970s when the late Mel Tappen was publishing articles in the US magazine Guns and Ammo essentialy creating the modern survivalist movement. I myself post articles and reviews at Zombie Wiki and Amazon under "Saber/Sabre Bob"