Montana inmate mail
Send a letter to an inmate in Montana
Confirm the Montana placement and AO number before writing. PieterPost formats, prints, adds the envelope and postage, and mails your physical letter through the matching Phoenix or direct-facility route.
Choose their Montana facilityMontana state-prison addresses
Choose the Montana route for the current placement
Most Montana DOC placements use TextBehind in Phoenix, Maryland. Crossroads Correctional Center and Dawson County Correctional Facility instead receive eligible personal mail directly and scan it on site.
Do not combine the Phoenix format with a direct-facility address. Pine Hills Correctional Facility also has youth-identification formatting that should be checked on the current Montana DOC page.
Montana DOC TextBehind Processing
Full first and last name – AO numberFull facility name, MontanaP.O. Box 247Phoenix, MD 21131Crossroads Correctional Center
Full first and last name – AO numberCrossroads Correctional Center50 Crossroads DriveShelby, MT 59474Dawson County Correctional Facility
Full first and last name – AO numberDawson County Correctional Facility440 Colorado BoulevardGlendive, MT 59330Three simple steps
How to send a letter to an inmate in Montana
Choose the current facility and add the inmate's AO number. We help you carry the address into the letter flow.
- 1Choose their current facility
- 2Write and review your message
- 3We print, stamp, and mail it
Current Montana guidance
Helpful inmate-mail rules
- Letter length
- No universal page cap applies to every placement; keep mail compact and check before sending an unusually long letter
- Paper format
- Use plain, flat, legible pages that are suitable for scanning
- Envelope and address
- Include the full name, AO number, sender's full name and return address, and do not mix Phoenix and direct-facility formats
- How it arrives
- TextBehind provides a reproduction for most placements; Crossroads and Dawson scan eligible mail on site
Items that need another approved route
PieterPost is for ordinary written letters. To help avoid a mailroom rejection, do not add these items to the envelope:
- Irreplaceable photographs, identification documents, or other originals
- Padded, layered, musical, electronic, pop-up, scented, or decorated cards
- Glued layers, loose objects, or material that cannot be scanned flat
- Cash, checks, stamps, gift cards, or other loose valuables
PieterPost takes care of the rest
You only need to write your message
No printer, paper, envelope, stamp, or trip to the post office. We prepare and mail the physical letter for you.
- Write your letter online from any device
- Check the finished letter before paying
- We format and print it for the facility
- We address, stamp, and mail the envelope
Montana facility finder
Find their prison or local jail
Choose the current facility on the map. We will carry the selected address into the letter flow for you to review.
Is the person in federal prison?
Search the Bureau of Prisons inmate locator and continue with the federal letter flow.
Common questions
How do I send a letter to someone in Montana DOC custody?
Confirm the AO number and current placement first. Select the Phoenix TextBehind route used by most placements or the published direct address for Crossroads or Dawson, then write online and PieterPost will print, envelope, add postage, and mail the letter.
Which address should I use for Montana personal mail?
Most placements use the full name and AO number, full facility name followed by Montana, P.O. Box 247, Phoenix, MD 21131. Crossroads uses 50 Crossroads Drive in Shelby, and Dawson uses 440 Colorado Boulevard in Glendive.
How do I find the AO number and current facility?
Use the Montana Correctional Offender Network search to verify the AO number and current placement. The placement decides whether the Phoenix processor, Crossroads, or Dawson address applies.
How is Montana mail delivered, and is there a page limit?
TextBehind scans mail for most Montana placements and supplies a reproduction. Crossroads and Dawson scan eligible mail on site. Montana publishes no universal page cap for every placement, so check the actual facility before an unusually long letter.
Does this guide apply to every Montana jail or federal prison?
No. This page is for adult Montana DOC placements. County or city jails, federal prisons, juvenile settings such as Pine Hills, and other custody programs may need different addressing and identification details.