The Polk Correctional Institution is a state prison for men located in Polk City, Polk County, Florida, owned and operated by the Florida Department of Corrections. This facility has a mix of security levels, including minimum, medium, and close, and houses adult male prisoners. Polk first opened in 1978, and has a maximum capacity of 1,208 prisoners.

28°11′18″N 81°47′08″W / 28.188247°N 81.785428°W / 28.188247; -81.785428