The Ohio State Penitentiary is a 502-inmate capacity supermax Ohio Department of Rehabilitation and Correction prison in Youngstown, Ohio. Throughout the last two centuries, there have been two institutions with the name Ohio Penitentiary or Ohio State Penitentiary; the first prison was in Columbus, Ohio. Inmates in Levels 5B and 5A are classified as those who fail to adapt or those who are active participants/ring leaders of security threat groups.