Where to Send Mail to Johnston Unit Inmates: Digital Mail vs. Unit Delivery

Sending mail to someone at the Johnston Unit? Your first decision is whether it goes through TDCJ's digital mail system or directly to the unit. Most personal mail gets routed to the TDCJ Digital Mail Processing Center, scanned, and uploaded to the inmate's secure tablet. A few exceptions must be sent straight to the unit instead.

TDCJ routes most personal mail for Johnston Unit inmates through a digital mail platform. Your letters, photos, and similar items don't go straight to the unit. They're sent to the Digital Mail Processing Center, scanned, and uploaded to the inmate's secure tablet. This is why the address matters - personal correspondence belongs at the processing center so it can be digitized and delivered.

For personal mail that should be processed through the digital system for a Johnston Unit inmate, use this exact address format: Texas Department of Criminal Justice Inmate’s Full First and Last Name + TDCJ Number PO Box 660400 Dallas, TX 75266-0400

Exceptions Unit Delivery

• ✓ Legal mail
• ✓ Media mail
• ✓ Books, magazines, packages, and other subscriptions from verified publishers

For items that must go directly to the Johnston Unit (like the exceptions listed above), address your envelope clearly. Include the inmate's full name, their TDCJ number, and the unit address so it gets routed correctly.

• ✓ Use the Digital Mail Processing Center address (PO Box 660400, Dallas, TX 75266-0400) for most personal letters, photos, and similar correspondence.
• ✓ Double-check the inmate’s full first and last name and TDCJ number before you seal the envelope.
• ✓ If you’re mailing an exception item directly to the unit, make sure the envelope includes the inmate’s full name, TDCJ number, and the unit address.
• ✓ Don’t mix up addresses: personal mail belongs at the digital processing PO Box, while exception items should go to the unit.