List of countries by prevalence of opiates use

This is a list of countries, and some territories, by the annual prevalence of opiates use as percentage of the population aged 15–64, unless otherwise indicated. == Methodology == The primary source of information are the World Drug Report 2011 (WDR 2011) and the World Drug Report 2006 (WDR 2006), published by the United Nations Office on Drugs and Crime (UNODC).