This report presents a first look at results from the 2011 National Survey on Drug Use and Health (NSDUH), an annual survey of the civilian, noninstitutionalized population of the United States aged 12 years old or older. The report and detailed tables present national estimates of rates of use, numbers of users, and other measures related to illicit drugs, alcohol, and tobacco products. The report and detailed tables focus on trends between 2010 and 2011 and from 2002 to 2011, as well as differences across population subgroups in 2011. NSDUH estimates related to mental health, which were included in national findings reports prior to 2009, are not included in this 2011 report but will be available by late 2012 in another report and set of detailed tables. Also included below is a link to a set of tables assessing the effects on estimates from using 2010 census-based control totals in the 2011 NSDUH weighting process since NSDUH estimates for 2002 to 2010 were based on weights developed using 2000 census-based control totals.