Uh huh, sure.
Still, at the MPC they're mostly male (and work nights, and I bet you've never been to an MPC at night).
For many years the worst demographic problem was the incredible dominance of females in postmaster jobs. Those ol'gals just wouldn't retire and wouldn't retire and guys couldn't move up. I think it was something like 75% female, maybe more.
No doubt that's a good reason to close down useless small town post offices.