aln:
I'm curious as to where/why you'd use a 2.5 residents per house figure?
The Villages is a "retirement" community; more than two residents per home are, essentially, not allowed.
In the "outside" world, I'd guesstimate that 2.5 residents per household would be pretty close to accurate. Here, however, I'd suggest that it's more like 1.5 residents per household. I've heard that it's more like 1.2!
That'd be a pretty big difference in total population here!
SWR
