Only 31 percent, according to a survey conducted by the Pew Research Center for the People and the Press. 18 percent of those surveyed said they may not participate in the 2010 Census.
Though 90 percent of respondents said the census was very or somewhat important, the survey underscored the public’s lack of knowledge about the decennial count. Only 31 percent knew census participation is required by law. Answers about the census’ purpose fared somewhat better: 59 percent knew that the census is used to appropriate government funds and 64 percent knew the census determines congressional representation.
It seems the Census Bureau's $133-million advertising campaign that began this week is sorely needed.
Details may be found at the My Two Census blog at http://www.mytwocensus.com/2010/01/20/poll-just-31-percent-know-census-is-required-by-law/.