California State Prison, Vacaville is a medium-security prison located in Vacaville, California. It was established in 1955 and primarily houses male inmates. The facility is known for its focus on rehabilitation and offers various programs aimed at reducing recidivism. The prison is part of the California Department of Corrections and Rehabilitation and includes a medical facility that provides healthcare services to inmates. It also features educational and vocational training programs to help inmates develop skills for reintegration into society upon release.