10 Most Commonly Used Illegal Drugs in America

5. Fentanyl

Number of drug reports: 98954

Percent of all cases: 6.50%

Fentanyl was most common in the Midwest (28556 reports).

4. Heroin

Number of drug reports: 127641

Percent of all cases: 8.39%

Heroin was most common in the Northeast (33678 reports).

3. Cocaine

Number of drug reports: 209086

Percent of all cases: 13.74%

Cocaine was most common in the South (87581 reports).