I applied online. The process took 1 week. I interviewed at US Census Bureau (San Antonio, TX) in Apr 2010
Interview
I called the census office to see if any positions were available and found out they were looking for enumerators in my area. I went to a local library to take a skills test. I had prepped for the test by studying the online study guide. After about a month I got a call for the job and had to go in for training a week later.
It was a straight forward interview process. Just what one would expect for that level job. Friendly but formal, government style. Included an on line, phone and in person steps.