Do you have to answer questions from the US Census Bureau?

Answer:
Yes. You are required by law to answer. If you don't mail back the questionnaire, somebody will come and knock on your door to ask the questions.

Save yourself (and the government) some trouble, just mail it back.
First answer by Wh1246. Last edit by Eviltechie. Contributor trust: 534 [recommend contributor recommended]. Question popularity: 3 [recommend question].