Clyde M. Johnston Unit

The Clyde M. Johnston Unit is a Substance Abuse Felony Punishment Facility that's located in Winnsboro, Texas. This prison is for substance abuse offenders and is managed by the Texas Department of Criminal Justice. It can house a maximum of 612 male inmates.

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Clyde M. Johnston Unit

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Visiting Hours and Rules

The visiting hours at the Johnston Unit are on Saturdays and Sundays from 8:00 am to 5:00 pm. A visiting period lasts for about two hours and each inmate is allowed one visit per weekend. A maximum of two adults (18+) are allowed at a visit. Children 17 and younger are not counted in the visitor number. 

If you have any questions – including visiting changes due to COVID-19 – call the Ombudsman Visitation Hotline at (936) 437-4927 or toll free at (844) 476-1289. The hotline is open from 8:00 am to 5:00 pm on Saturdays and Sundays. 

Visiting Applications

You must fill out an application and get approved by the Texas Department of Criminal Justice before you can visit an inmate at the Johnston Unit. Click on the visiting application and instructions below to get started.

Dress Code

The dress code at Johnston Unit is modest and strictly enforced. You could be denied your visit if you are not dressed appropriately.

  • Sandals, flip-flops, and open-toe shoes may be worn. 
  • Clothing that is tight fitting, revealing, or made with see-through fabrics are prohibited.
  • Sleeveless shirts and dresses are allowed, but must cover the shoulders. 
  • Shorts, skirts no shorter than three (3) inches above the middle of the knee while standing, capri pants or long pants are allowed. 
  • Length is not restricted for children ages 10 and younger. 
  • Clothing with pictures or language that may be considered profane or offensive is not allowed. 

For a complete list of the visiting rules, click here.

What can you bring to a visit?

All visitors are subject to search and will be screened by a metal detector prior to entering the visitation area. A photo ID is required for all visitors 18 years of age and older. All other items must be kept in your vehicle except: 

  • A small wallet, clear plastic bag, or change purse
  • $25 cash (in coins) for the vending machines
  • Visitors with infants or small children may bring no more than three diapers, a supply of baby wipes, and two baby bottles (“sippy” cup for toddlers). These items must be stored in a clear plastic bag.

Physical Address

Johnston Unit
703 Airport Road
Winnsboro, TX 75494

Driving Directions:

General Phone Number

(903) 342-6166 (**089)

Inmate Mailing Address(es)

Inmate Name/DOC Number
Johnston Unit
703 Airport Road
Winnsboro, TX 75494

Inmates can have newspapers, magazines, and books, but you can't mail them directly. They must be mailed by the publisher, publication supplier, or bookstore. 

If you want to buy your inmate a book or a subscription to a newspaper or magazine, make sure you set up the shipping address just like the inmate mailing address above. Always include the inmate's name and number.


You can send your inmate eMessages through JPAY. To register, please contact JPAY at 1-866-333- 5729 or visit on the web.

How to Call an Inmate

You can't call an inmate at Johnston Unit, but they do have access to phones during certain hours. For complete details on how to call an inmate in Texas, please click here.

How to Send Money

There are a number of ways to send money to an inmate at Johnston Unit. Remember, you will need their inmate ID number to put money on an inmate's books.

JPAY allows you to send money to an offender for a service fee. Visit their website at or call 1.800.574.5729 to send funds using Visa or MasterCard credit/debit card. 


1. Visit 

2. Telephone (toll-free): call 1.866.345.1884 for live bilingual agents available 24/7 


Click here and enter offender number, name and confirm offender. Add deposit amount to your cart and checkout using a Visa, MasterCard, or Discover card for a service fee.

MONEY ORDERS or CASHIER’S CHECKS made payable to “Inmate Trust Fund for Offender Name and Number” 

  • You may obtain deposit slips from offender or send a self-addressed, stamped envelope to: Inmate Trust Fund, PO Box 60, Huntsville, TX 77342-0060 
  • Send deposit and completed deposit slip to Inmate Trust Fund, PO Box 60, Huntsville, TX 77342-0060

Programs For Inmates

The Substance Abuse Felony Punishment program at Johnston Unit is an intensive six-month program (nine months for offenders with special needs). Offenders participating in the Substance Abuse Felony Punishment program may be placed there by a judge as a condition or modification of community supervision, or be required to participate by the Board of Pardons and Paroles as a modification of parole. 

It consists of three phases that include learning basic language and rules, exposing addiction, offender thinking errors and drug seeking behaviors, and practicing relapse prevention and pro-social problem solving techniques.

Special Treatment Programs:Substance Abuse Felony Punishment Facility (SAFPF)

Additional Programs/Services: Adult Education Program (upon availability), Chaplaincy Services, Community Tours, GO KIDS Initiative

Community Work Projects: Services provided to city agencies, local school districts, the Texas Department of Transportation, and Texas Parks and Wildlife

Volunteer Initiatives: Literacy/Education, Substance Abuse Education, Parent Training, Support Groups, Life Skills, Religious/Faith Based Studies and Activities

Pictures of Clyde M. Johnston Unit

Careers at Clyde M. Johnston Unit

If you are interested in a career with the Texas Department of Criminal Justice and would like more information about available jobs at Johnston Unit, click here.