Figure 2.10 is a U.S. map showing marijuana use in past month among youths aged 12 to 17, by State: percentages, annual averages based on 2002 and 2003 NSDUHs. States listed here in alphabetical order within each group were divided into five groups based on the magnitude of their percentages. States in the highest group (9.59 to 13.32 percent) were Alaska, Colorado, Hawaii, Maine, Massachusetts, Montana, New Hampshire, New Mexico, Rhode Island, and Vermont. States in the next highest group (8.75 to 9.58 percent) were Connecticut, Delaware, Michigan, Minnesota, Nebraska, Nevada, New York, Oregon, South Dakota, and Washington. States in the mid group (7.75 to 8.74 percent) were Arkansas, Florida, Idaho, Kentucky, Maryland, North Carolina, Ohio, Oklahoma, Pennsylvania, Virginia, and West Virginia. States in the next lowest group (7.26 to 7.74 percent) were Arizona, California, District of Columbia, Illinois, Indiana, Kansas, Missouri, New Jersey, North Dakota, and Wisconsin. States in the lowest group (5.30 to 7.25 percent) were Alabama, Georgia, Iowa, Louisiana, Mississippi, South Carolina, Tennessee, Texas, Utah, and Wyoming.

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SAMHSA, an agency in the Department of Health and Human Services, is the Federal Government's lead agency for improving the quality and availability of substance abuse prevention, addiction treatment, and mental health services in the United States.