The only question a census worker is authorized to ask per the US CONstitution is, "How many people were living at this residence on April 1, 2010? I always enjoyed the notion that they picked April Fool's Day for their measurement day in Amerika. It must be a little joke they enjoy every ten years. Any other census is not a authorized by the CONsitution, but is authorized by CONgress or the Executive Branch to snoop. As are all those questions on the oaficial census.
Be pleasant. Don't answer them.