This report provides information on drug usage for four major drugs: heroin, marijuana, cocaine, and emerging drugs. Findings for heroin use include: increased popularity of the drug has reached most areas of the country, with high-purity amounts available in the Northeast, Mid-Atlantic and the West; an increase in the number of new, young users; low-purity Mexican black tar heroin is found primarily in the Southwest Border region, leading to an increase in injection drug use; the decrease in the price of heroin has led to crack cocaine users switching to heroin as their primary drug of choice; and the joint distribution of heroin and cocaine continues to rise. The findings for cocaine include: the use of crack is stable and it remains the dominant drug of choice in most markets; the price of the drug is dropping in most areas but this has had no effect on the drugs continued drop in popularity; and cocaine use in powdered form has reappeared in some areas. The findings for marijuana include: the drug continues to be widely abused, especially among young people; an increase has been seen in the use of marijuana mixed with other drugs, such as PCP, crack, or heroin; and treatment providers report that one-third of all clients in for marijuana abuse are under 20 years old, and 75 percent of them have co-occurring problems with alcohol. The findings for emerging drugs include: methamphetamine use continues to rise in the West and Southwest and in Hawaii, with users mostly White males in their twenties; the use of club drugs continues to increase in many areas; and inhalant abuse is increasing among young people. Tables and appendix