Most of the TDCJ prisons are located in the historic cotton slavery belt around the former location of Stephen F. Austin's colony. Counties that have housed adult correctional facilities, such as Brazoria, Fort Bend, Polk, and Walker, once had slave majority populations. Many of the largest prison farms and prison properties in the state, including Goree Unit, the Jester units, Polunsky Unit, the Ramsey units, and Wynne Unit, are located in those counties. The state of Texas began building adult prisons outside of the historic cotton belt in the 1980s.