According to the Federal Bureau of Prisons BOP facilities held 34,769 prisoners prisons age ranges of federal prisoners between the age of 26-50 BOP facilities held 34,769 prisoners make up BOP facilities held 34,769 prisoners BOP facilities held 34,769 prisoners BOP facilities held 34,769 prisoners BOP facilities held 34,769 prisoners Inmate Statistics make up 20% of inmates federal prisons 26 people age ranges of federal prisoners age ranges of federal prisoners make up bop.gov U.S. Federal Bureau of Prisons inmates statistics website age ranges of federal prisoners few Up-to-date federal prison statistics age ranges of federal prisoners 55 percent inmate statistics U.S. Federal Bureau of Prisons inmates statistics website few prisons prisons prisons