Figure 2.15 is a U.S. map showing perceptions of great risk of smoking marijuana once a month among persons aged 18 to 25, 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 (26.49 to 31.44 percent) were Alabama, Arkansas, Florida, Georgia, Iowa, Mississippi, Nebraska, Oklahoma, Texas, and Utah. States in the next highest group (24.35 to 26.48 percent) were Arizona, California, Hawaii, Idaho, Kentucky, Louisiana, North Carolina, South Carolina, Tennessee, and West Virginia. States in the mid group (22.52 to 24.34 percent) were Illinois, Indiana, Kansas, Missouri, Nevada, New Jersey, New Mexico, New York, North Dakota, Ohio, and Virginia. States in the next lowest group (18.00 to 22.51 percent) were Delaware, District of Columbia, Maryland, Michigan, Minnesota, Montana, Pennsylvania, South Dakota, Wisconsin, and Wyoming. States in the lowest group (12.08 to 17.99 percent) were Alaska, Colorado, Connecticut, Maine, Massachusetts, New Hampshire, Oregon, Rhode Island, Vermont, and Washington.

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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.