How to Send Mail to an Inmate at Dallas County Jail (and where it goes)
Mail for someone at Dallas County Jail doesn't go directly to the jail — it routes through a mail processing center. How you address it and what you include determines whether it gets delivered or rejected.
Include the inmate's full name and booking (book-in) number on the envelope. All Dallas County Jail mail goes to the Mail Processing Center at PO Box 9226, Seminole, FL 33775-9226 - that's the address you'll write on the envelope, not the jail itself.
Legal mail works differently. Anything sent to PO Box 9226 in Seminole, Florida isn't treated as confidential - even if it's from an attorney. For confidential attorney correspondence, Dallas County offers a separate address: attorneys can send mail to PO Box 660334, Dallas, TX 75266.
Tip for attorneys: Dallas County recommends using SmartInmate (smartinmate.com) to deliver legal mail confidentially and securely.
Prohibited Mail Contents
- ✓ Glue
- ✓ Paperclips
- ✓ Clasps
- ✓ Staples
- ✓ Magnets
- ✓ Stickers
- ✓ Tape
- ✓ Plastic
- ✓ Wood
- ✓ Cloth
- ✓ Glass
- ✓ Ribbon
- ✓ Liquids
- ✓ Metal
- ✓ Electronic devices
- ✓ Any like material
Note: If you include any of the prohibited materials above, the mail can be rejected and your loved one’s delivery can be delayed.
Legal mail at Dallas County Jail gets opened in front of the inmate. If you're trying to protect attorney-client privacy while getting documents delivered, that's the baseline to plan around.
Dallas County doesn't forward mail after someone is released. Anything that arrives after release gets returned to sender or sent to the U.S. Post Office dead letter department.
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