I live in a rural area, my town and surrounding towns probably have 100,000 people if that living in them. Including myself there are roughly 3 to 5 AB/DL's living in my city at the moment, and possibly 2 or 3 living in the towns near by. Assuming all of these people still live here that's about 8 per 100,000 people, which translates to 1 per 12,500 people. This doesn't account for closeted AB/DL people and for possible population changes so I have no way of being 100% accurate. But based of my results from living in a conservative part of rural New Mexico, I am inclined to agree with the estimate of 1 in 1000 people in Western cultures may have some AB/DL tendencies.