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Definitions: Marijuana use in the past month.
Data Source: Department of Health and Human Services, Substance Abuse and Mental Health Services Administration, Office of Applied Studies.
State Estimates of Substance Use from the National Survey on Drug Use and Health accessed online at http://www.oas.samhsa.gov/.
Updated November 2012.
A 90 percent confidence interval for each estimate can be found at
Marijuana use by age group.
Note: The District of Columbia, Puerto Rico and the U.S. Virgin Islands are
not included in maps and rankings because they are not states and therefore comparisons on many
indicators of child well being are not meaningful.
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