Figure 2.23 is a U.S. map showing any illicit drug use other than marijuana in past month among persons aged 26 or older, 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 (3.02 to 3.62 percent) were Arizona, California, Colorado, District of Columbia, Kentucky, Louisiana, Missouri, Nevada, New Mexico, and Oregon. States in the next highest group (2.71 to 3.01 percent) were Alabama, Alaska, Florida, Georgia, North Carolina, Oklahoma, Rhode Island, Tennessee, and Washington. States in the mid group (2.51 to 2.70 percent) were Arkansas, Delaware, Idaho, Maine, Maryland, Montana, New Hampshire, Texas, Vermont, Virginia, Wisconsin, and Wyoming. States in the next lowest group (2.36 to 2.50 percent) were Hawaii, Indiana, Michigan, Mississippi, New Jersey, Ohio, Pennsylvania, South Carolina, Utah, and West Virginia. States in the lowest group (1.95 to 2.35 percent) were Connecticut, Illinois, Iowa, Kansas, Massachusetts, Minnesota, Nebraska, New York, North Dakota, and South Dakota.

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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.