Duncan Unit in Diboll


The Duncan Unit, also known as the Diboll Unit, is a significant correctional facility in Diboll, Texas. Established in June 1995, this prison has a maximum capacity of 518 male inmates. Adjacent to the Rufus H. Duncan Geriatric Facility, the unit is crucial in the Texas Department of Criminal Justice operations.     

Originally built in 1992 on 27 acres, the Duncan Unit is closely linked to the Diboll Prison Unit, which operates as a privately run facility. Specifically designed for housing geriatric or elderly offenders, the Duncan Unit can accommodate up to 606 male inmates. This specialized focus on elderly inmates highlights the facility’s commitment to addressing the unique needs of this demographic within the prison system.

The visitation schedule for the Duncan Unit (Diboll) allows visits on:

  • Saturdays and Sundays from 8:00 a.m. to 5:00 p.m.
  • Visitors must be on the inmate’s approved list to visit the facility during these hours.
  • The schedule aligns with the general practice of conducting weekend visits to accommodate visitors’ availability and ensure a structured approach to inmate visitation.

For further information about the Duncan Unit (Diboll), including inmate records search and visitation details, individuals can refer to the official website of the Texas Department of Criminal Justice or utilize online inmate search platforms specific to the state of Texas.



1502 South First Street

Diboll, TX 75941


(936) 829-2616 (**063)

(325) 223-1334


[email protected]



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