Of the 94,678 federal inmates incarcerated for a drug violation as their most serious offense, 12.4 percent (11,533 persons) are serving time for violating marijuana laws. Most marijuana offenders are imprisoned for trafficking violations. The average length of prison for those incarcerated for marijuana-related offenses is 88 months.
Nearly half (44.3 percent) of federal marijuana inmates are offenders with minimal criminal histories who have not previously served time in prison. Eight-five percent of marijuana offenders did not possess a firearm.
Over a third (36.5 percent) of federal marijuana prisoners are age 40 or older. Thirty-five percent of federal marijuana prisoners are not US citizens.
The percentage of marijuana-related federal prisoners has remained virtually unchanged over the past decade.
Full text of the BJS report, “Drug offenders in federal prison: Estimates of characteristics based on linked data”, is online at: http://www.bjs.gov/content/pub/pdf/dofp12.pdf.