Track a letter

How to send mail to an inmate at Regional Treatment Centre

To write to someone at Regional Treatment Centre, address the envelope to the inmate's full name, c/o Regional Treatment Centre, PO Box 280, Bath ON K0H 1G0. Regional Treatment Centre is a federal treatment centre in Bath, Ontario, operated by Correctional Service Canada. Mail is inspected before delivery, and inmates can be transferred without notice — double-check the person is still there before you send.

Inmate mail — Regional Treatment Centre

[Inmate's full name]
c/o Regional Treatment Centre
PO Box 280
Bath ON  K0H 1G0

The facility itself is located at 5775 Bath Rd — but use the mailing address above for letters.

Verified July 2026canada.cacanada.ca

Write it now. We print & mail it for $6.

Type your letter in the browser. We print it, stamp it, and hand it to Canada Post — usually same business day. No printer, no stamps, no post office.

Send a letter to an inmate — $6

$6 flat · postage included · no account needed

  • You write & pay
  • We print & envelope
  • Printed next business day, then Canada Post
  • Confirmation of Mailing emailed

Your name
Your return address

c/o Regional Treatment CentrePO Box 280Bath, ON K0H 1G0

Your letter, printed and mailed for you.

Key facts

  • Write the inmate's full name on the first line and "c/o Regional Treatment Centre" below it — mail without a usable inmate name is returned or destroyed.
  • All incoming mail is opened and inspected for contraband; personal (non-privileged) mail can be read.
  • Do not enclose cash, gift cards, postage stamps, jewellery, or anything besides paper — prohibited enclosures are seized.
  • Inmates are transferred between facilities without notice. Confirm the person is still at Regional Treatment Centre before mailing, and double-check the address against Correctional Service Canada's official listing.
  • Include your full return address so the person can write back — some facilities refuse mail without one.
  • PostPal prints and deposits your letter with Canada Post within 1–2 business days, so you can write from anywhere without a printer or stamps.

How to send your letter

  1. 1

    Confirm the person is still at Regional Treatment Centre

    Inmates move between facilities without notice — after sentencing, for security reclassification, or for programs. Confirm during a call or visit that they are still at Regional Treatment Centre before you send anything, and double-check the mailing address against the official Federal (CSC) listing (linked in the sources below).

  2. 2

    Address it to the inmate, care of the facility

    First line: the inmate's full name (the name they are held under, not a nickname). Second line: c/o Regional Treatment Centre. Then the mailing address: PO Box 280, Bath ON K0H 1G0.

  3. 3

    Keep the contents to paper only

    A letter on plain paper is always safest. No cash, stamps, gift cards, stickers, glitter, perfume, or laminated items — facilities seize prohibited enclosures and may reject the whole letter. If you want to send photos or documents, call the facility first to confirm what it accepts.

  4. 4

    Send it without a trip to the post office

    Write or upload your letter to PostPal with the address above prefilled, and we print, envelope, and deposit it with Canada Post within 1–2 business days for $6 — with your return address printed so they can write back.

Common questions

How do I address a letter to an inmate at Regional Treatment Centre?

Put the inmate's full name on the first line, "c/o Regional Treatment Centre" on the second line, then the facility's mailing address: PO Box 280, Bath ON K0H 1G0. Include your own return address so they can write back.

Is mail to Regional Treatment Centre opened and read?

Expect it to be. Correctional facilities inspect incoming mail for contraband, and non-privileged personal mail can be read under Correctional Service Canada's rules. Never include cash, gift cards, stamps, or anything besides paper — unauthorized enclosures are confiscated and can get the letter rejected.

What happens if the person has been transferred or released?

The letter will not be forwarded to you or reliably to them. Inmates are moved between facilities without notice, so confirm the person is still at Regional Treatment Centre — ideally during a phone call or visit — before mailing anything important.

Can the inmate write back to me?

Yes. Include a complete return address on your letter. Inmates in federal institutions can send outgoing personal mail, though they may need to cover their own postage.

Can I send photos or printed documents?

Plain paper letters and standard photo prints are generally accepted; polaroids, hard objects, and anything glued, taped, or perfumed usually are not. Rules vary by facility and change — call Regional Treatment Centre to confirm before sending anything other than a plain letter.

Sources

Addresses verified July 2026 against official sources. Always confirm on the official site before time-sensitive filings.

Related pages

Browse more: Ontario · Inmate & prison mail