Where to Mail Money Orders for Someone at MRDCC (Lockbox address & how to fill the money order)
Sending a money order to someone at MRDCC? You'll mail it to Maryland's DPSCS Lockbox, where it gets credited to their account. The details you write on the money order matter—small mistakes can cause delays.
Maryland DPSCS routes all mailed deposits through a central Lockbox so funds can be processed efficiently and credited to the right person's account. When you send a money order, the information you write on it is what connects the payment to your loved one. The goal is straightforward: clear, accurate details so the deposit posts without holdups.
Mail Lockbox money orders to: P.O. Box 17111 Baltimore, MD 21297-0382
How to Fill
- ✓ Make the money order payable to the incarcerated individual (use their name exactly as it’s recorded - no aka’s or nicknames)
- ✓ Write the incarcerated individual’s full name clearly
- ✓ Add the facility name (MRDCC / Maryland Reception, Diagnostic and Classification)
- ✓ Include the incarcerated individual’s State Identification (SID) number
- ✓ Include your name and return address
- ✓ Print neatly using black or blue ink only
Note: Missing or incorrect name/SID details can delay the deposit. Keep your money order receipt (or transaction/receipt number) so you can track it if there’s a problem.
With correct information, funds typically post 2–7 business days after the Lockbox receives and processes the money order. Add mail delivery time, and you're looking at roughly 10 days total. If your money order shows as cashed but the balance hasn't appeared yet, contact the money order company or issuing bank first to get the exact date it was cashed.
- ✓ Incarcerated individual’s full name
- ✓ Incarcerated individual’s SID number
- ✓ Money order receipt number / transaction number
- ✓ Date the money order was cashed (confirm with the money order company)
- ✓ Total amount deposited
Once you have the cashed date and your details ready, you can call 410-540-6221, 410-540-6222, or 410-540-6223 for help. You can also email lockbox@maryland.gov - put the incarcerated individual's name and SID number in the subject line so your message gets matched up faster.
For MRDCC inmate account issues, email dpds.inmateaccounts@maryland.gov. For Lockbox deposit questions (including money orders), email lockbox@maryland.gov and include the incarcerated individual's name and SID number in the subject line. Need to talk to someone about a cashed money order? Call 410-540-6221, 410-540-6222, or 410-540-6223.
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