This is the second volume in a two-volume set, reporting results from the Monitoring the Future (MTF) surveys in 2002 and earlier of American college students, all young adult high school graduates through age 30, which includes college students and older graduates ages 35 and 40. The report presents information on the prevalence of and trends in drug use among college students and early and middle adulthood. The MTF is a long-term research program conducted at the University of Michigan’s Institute for Social Research. It has become one of the Nation’s most relied-upon sources of information on changes in licit and illicit psychoactive drug use among American adolescents, college students, and young adults. It tracks and reports the use of a fast growing array of such substances in these groups. The college student population comprises all full-time students, 1 to 4 years post-high school, enrolled in a 2- or 4-year college in March during the year of the survey. The young adult sample includes the college students and comprises representative samples from each graduating class from 1987 to 2001, all surveyed in 2002. In addition to prevalence and trend information of young adults, information is presented on attitudes and beliefs about drugs and the social milieu for young adults. Figures and tables