Richard J. Donovan Correctional Facility (RJDCF or RJD) is a state prison located in unincorporated southern San Diego County, California, near San Diego. It is a part of the California Department of Corrections and Rehabilitation. It is a 780acre facility. It is the only state prison in San Diego County.The prison is situated on a mesa about 1.5mi from the Mexico–United States border, in the foothills of Otay Mesa overlooking the Mexican border. The Otay Mesa site is shared with four other properties related to law enforcement: the federal San Diego Correctional Facility privately operated by the Corrections Corporation of America the George Bailey County Detention Facility the East Mesa Juvenile Detention Facility, operated by the County of San Diego and a multi-jurisdictional law enforcement firearms training complex used by the FBI, the Customs Service, and local police forcesFacilityThe prison cells were designed to house one person each, however, due to overcrowding, many house two prisoners each. As of March 2012, the facility's total population was 3,666, or more than of 166.6 percent of its design capacity of 2,208.