A "Census Worker" was just by here today as I was backing my truck out of the driveway. I stopped my truck in the street and confronted the dweeb. He asked me to confirm the address (WTF?) and if it was a single-family dwelling. He then fiddled with what appeared to be a PDA-type gizmo. All I know is, he never got closer than 100 ft. to my front door.
I trust, with a handle like yours, you are not counting on the extra 60 feet to be your margin of protection should they come for us folks that don't toe the Obama line.
Someone came to my door last week asking the same thing - about the single family dwelling. He looked properly credentialed. I wondered why he was asking - that information is a matter of public record.