Corcoran is most famous as the site of the California State Prison, Corcoran. It was home to notable inmates Charles Manson and Juan Corona. The California Substance Abuse Treatment Facility and State Prison, Corcoran is a separate facility that is also located in the city. As of January 1. 2015, the two prisons held a combined total of 9,592 inmates. Inmates are counted as city residents by both the United States Census and the California Department of Finance. Thus, the incarcerated persons in the two prisons comprise just over 43% of the total population of Corcoran.