Presents final counts of prisoners under the jurisdiction of state and federal correctional authorities on December 31, 2014, collected by the National Prisoner Statistics program. This report includes the number of prison admissions, releases, noncitizen inmates, and inmates age 17 or younger in the custody of state or federal prisons. It presents prison capacity for each state and the Federal Bureau of Prisons (BOP), examines the use of private prisons by state and the BOP from 1999 to 2014, and describes the offense and demographic characteristics of yearend federal and state prison populations. The report also includes yearend counts for territorial and military correctional populations.