It's a very quiet job.
The census form -- one should have been mailed to you some time ago, if you live in the United States -- is a very simple thing for most, asking basic questions about who is living in your residence on or about April 1, 2010. However, that's not to say the answers are simple for everyone.
Take, for example, if you're a college student. On April 1 (and, yes, I am amused by the date too, but it's no joke), you may be home with your parents on spring break (or perhaps at some hedonistic beach vacation). Where do you get listed? Well, it's where you are most of the year: at college (eight months vs. four months on break at home, cumulatively).
Things can get more complicated, based on your situation (what if I'm homeless?) and what form you get. Most everyone gets a D-1 -- a simple form that just asks roughly seven questions about each person living there -- but you may get a D-1 E/S (with Spanish translations) if you live in a place with a high Hispanic population, or any one of four or five others.
I learned all this at a day-long training session, with many reviews, test exercises and much repetition, mostly on the subject of privacy.
The thing that the Census Bureau is absolutely fanatical about is privacy. We are literally sworn in (like soldiers or the President) and give an oath not to reveal information collected. They won't even share with other government agencies. To say they're rather rigid about this is an understatement.
So that's why this is probably the last you'll hear of my experiences doing this. But if you need a question answered about your census form, drop by the Goshen Library. I'm here all week...