William P. Hobby Unit

The William P Hobby Unit is a mixed-custody prison for female inmates that is located in Marlin, Texas. This facility can house a maximum of 1,384 inmates and is operated by the Texas Department of Criminal Justice.

The agricultural operations at William P. Hobby Unit include Edible Crops, Peach Orchard, Security Horses, and Security Pack Canines. The Manufacturing and Logistics Operations at the Unit include a Print Shop.

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William P. Hobby Unit

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Visiting Hours and Rules

The visiting hours at the William P Hobby Unit are on Saturdays and Sundays from 8:00 am to 5:00 pm. Each inmate is allowed one visit per weekend. A maximum of two adults (18+) are allowed at the visit. Children 17 and younger will not be counted in the visitor number. A regular visiting period ;asts two hours and begins when the offender is seated.

For more information about visiting an inmate at William P Hobby Unit, 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

Before you can visit an inmate at the William P Hobby Unit, you must fill out a visitor application and get approved by the Texas Department of Criminal Justice. Click on the visiting application and instructions below to get started.

Dress Code

The dress code at William P Hobby Unit is strictly enforced.

  • 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?

A photo ID is required for all visitors ages 18 and older. All 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 are allowed to bring the following items stored in a clear plastic bag:

  • No more than three diapers
  • A supply of baby wipes
  • Two baby bottles (“sippy” cup for toddlers)

Physical Address

William P Hobby Unit
742 FM 712
Marlin, TX 76661

Driving Directions: https://goo.gl/maps/3hYnKooUVd3ff9cc6

General Phone Number

(254) 883-5561 (**039)

Inmate Mailing Address(es)

Inmate Name/DOC Number
William P Hobby Unit
742 FM 712
Marlin, TX 76661

All mail sent to a prison inmate that includes unauthorized materials or contraband will be rejected. Newspapers, magazines, and books must be mailed directly to offenders only by the publisher, publication supplier, or bookstore.


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

How to Call an Inmate

You can't call an inmate at William P Hobby 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

The easiest ways to send money to an inmate at William P Hobby Unit are:


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

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


1. Visit www.AccessCorrections.com 

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

Programs For Inmates

Educational Programs: Literacy (Adult Basic Education/GED), Special Education, CHANGES/Pre-Release, Cognitive Intervention, Parenting Seminar

Career and Technology Programs: Automotive Specialization (Brakes); Business Computer Information Systems II; Painting and Decorating; Restaurant Management

Additional Programs/Services: Faith Based Dormitory, Adult Education Program (upon availability), Peer Education, Reentry Planning, Chaplaincy Services, GO KIDS Initiative

Volunteer Initiatives: Literacy/Education, Substance Abuse Education, Life Skills, Arts/Crafts, Support Groups, Religious/Faith Based Studies and Activities, Women's Storybook Project

Pictures of William P. Hobby Unit

Careers at William P. Hobby Unit

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