CAMS 2011 is the sixth wave of the Consumption and Activities Mail Survey that began in 2001. The sample for the 2011 CAMS mirrored that of 2007 and 2009. In September of 2011, 9,078 questionnaires were mailed to the CAMS sample. As was the case since 2005, there were 2 versions of the questionnaires for the 2011 CAMS. Of the 9,078 questionnaires, 6,161 were the full version, and 2,916 were the partial version. New cohort respondents in coupled/partnered household were randomly assigned to receive either the full or partial booklet. The CAMS data file contains data from 6,531 respondents, of which 1,612 are new cohort cases. The simple response rate is 71.9% for the total sample (across both versions of the questionnaires). The simple response rate for the full questionnaire is 70.9% and for the partial version the simple response rate is 74.3%.