When the census worker comes to your door, ask him to fill out the form available here.
“Public Law 93-579 states in part: “The purpose of this Act is to provide certain safeguards for an individual against invasion of personal privacy by requiring Federal agencies to permit an individual to determine what records pertaining to him are collected, maintained, used, or disseminated by such agencies.” The following questions are based upon that act and are necessary in order that this individual may make a reasonable determination concerning divulgence of information to this agency.
Fill out the form completely. If any question does not apply, mark the answer with N/A or Not applicable. Do not leave any question blank.”