Jefferson Correctional Institution (JEFCI) is a state-operated prison for men located in unincorporated Jefferson County, Florida, with a Monticello postal address, - - Compare to the 2020 U.S. Census Map of Monticello city. The prison is outside the city limits. owned and operated by the Florida Department of Corrections.

Jefferson has a mix of security levels, including minimum, medium, and close, and houses adult male offenders. Jefferson first opened in 1990 and has a maximum capacity of 1,503 prisoners, with additional capacity for 155 prisoners in two community release centers.

Notable Inmates Steven Williams

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