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Data and Statistics

There are a variety of sources of information available to monitor the prevalence and trends regarding marijuana use in the United States. The resources below cover a variety of marijuana-related issues, including data around usage, emergency room data, substance use and abuse data, policy measures, and other related tools.

National Surveys That Collect Information About Marijuana Use


  • Behavioral Risk Factor Surveillance System (BRFSS) [PDF – 535KB] World’s largest, continuously conducted telephone survey that tracks health behaviors, chronic diseases, and preventive health practices among noninstitutionalized adults in the United States.
  • Youth Risk Behavior Surveillance System (YRBSS) Monitors six categories of priority health risk behaviors, including marijuana use, among high school youth at the national, state, and local levels.
  • Pregnancy Risk Assessment Monitoring System (PRAMS) Collects state-specific, population-based data on marijuana use before, during, and shortly after pregnancy.
  • National Health And Nutrition Examination Survey (NHANES) Assesses the health and nutritional status of adults and children, aged 12 years and older, in the united states. The survey is unique in that it combines interviews and physical examinations. Voluntary drug use questions ask about ever use of marijuana, age of first use, age when starting to use marijuana regularly, amount used, frequency of use, and time since last use. These data are available from the 2005-2007 survey period onward.


National Programs That Collect Information About Marijuana Policies

  • Alcohol Policy Information System (APIS) A policy monitoring system sponsored by the National Institute on Alcohol Abuse and Alcoholism (NIAAA) that provides detailed information on a wide variety of alcohol-related policies in the United States at both state and federal levels. The system was expanded in 2016 to include policies related to legalizing the cultivation, sale, or use of cannabis for other than medical purposes, together with policies imposing various prohibitions and restrictions on such practices.

Trends and Statistics

  • Nationwide Trends Describes nationwide trends in drug abuse and addiction, focusing on past-month use for illicit drugs (including marijuana and prescription drugs), alcohol, and tobacco.
  • Treatment Statistics Reports data on the number of people in need of drug abuse treatment and characteristics of admissions to substance abuse treatment facilities.

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