[montyspython]

And why employ additional census workers when equipping the local mail delivery person would cost less in additional man hours.

[Ol' Sparky]

And why employ additional census workers when equipping the local mail delivery person would cost less in additional man hours.

That wouldn't work. There are residences that aren't occupied presently that can and will be when the Census forms are sent out. The Census has to have the mailing address of every possible residence.