"About 9 in 10 state (91%) and federal (88%) prisoners reported ever drinking alcohol (table 2).
"Ninety percent of state and 81% of federal prisoners reported ever using at least one drug in their lifetime (table 3).
"Sixty-five percent of state and 53% of federal prisoners reported using at least one drug during the 30 days prior to arrest.
"An estimated 87% of state and 75% of federal prisoners reported ever using marijuana in their lifetime.
"An estimated 1 in 10 state prisoners reported using methamphetamine (11%) or cocaine (9%) or had been misusing prescription drugs (9%) at the time of the offense for which they were imprisoned.
"Among federal prisoners, 8% reported using methamphetamine at the time of the offense, while 6% reported using cocaine and 6% reported misusing prescription drugs."
Laura M. Maruschak, Jennifer Bronson, PhD, and Mariel Alper, PhD. Alcohol and Drug Use and Treatment Reported by Prisoners: Survey of Prison Inmates, 2016. US Dept. of Justice Bureau of Justice Statistics. NCJ Number 252641. July 2021.