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How to mail a letter to an inmate at High Security Center

To write to someone held at High Security Center, address your envelope to the inmate's full committed name and RIDOC ID number, High Security Center, P.O. Box 8200, Cranston, RI 02920. High Security Center is a state prison in Cranston, Rhode Island, operated by the Rhode Island Department of Corrections.

Inmate mail — High Security Center

[Inmate's full committed name]  [RIDOC ID number]
High Security Center
P.O. Box 8200
Cranston, RI  02920

Put the inmate's full committed name and RIDOC ID number on the first line, and mail to the institution's inmate-mail address here — not its street address. Mail without a usable name and RIDOC ID number is returned.

Verified August 2026doc.ri.govrules.sos.ri.gov

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Your name
Your return address

High Security CenterP.O. Box 8200Cranston, RI 02920

Your letter, printed and mailed for you.

Key facts

  • Send mail to High Security Center, P.O. Box 8200, Cranston, RI 02920 — the institution's inmate-mail address, not its street address.
  • Rhode Island’s prisons are all on one campus (the ACI in Cranston), but each facility takes mail at its own P.O. box. Address it to the incarcerated person’s full name and RIDOC ID number, then the facility’s box, Cranston, RI 02920.
  • Use a plain white envelope and write in blue or black ink — coloured envelopes and other ink colours are rejected.
  • Incoming mail is screened for drug-laced paper before delivery. Mail sent to the wrong facility box, or without the person’s ID number, can be delayed or returned.
  • Include your full name and return address in the top-left corner. Send only through the U.S. Postal Service.
  • PostPal prints and mails your letter for you the next business day for $5 — with your return address printed so the inmate can write back, and no printer, envelope, or stamp needed.

How to send your letter

  1. 1

    Confirm the person is still at High Security Center

    Inmates are transferred between facilities without notice. Confirm they are still at High Security Center — and double-check the RIDOC ID number — before you mail anything, using the Rhode Island DOC (RIDOC)'s official inmate locator.

  2. 2

    Address it exactly

    First line: the inmate's full committed name and RIDOC ID number. Then High Security Center, P.O. Box 8200, Cranston, RI 02920. Add your full return address.

  3. 3

    Keep the contents allowed

    Plain letter-size paper is safest. Do not enclose cash, stamps, gift cards, or any object other than paper — prohibited items get the whole letter rejected. Check the mail rules above before adding photos.

  4. 4

    Send it without a printer

    Write or upload your letter to PostPal with this address prefilled, and we print, envelope, and mail it via USPS the next business day for $5 — your return address printed so they can reply.

Common questions

How do I address a letter to an inmate at High Security Center?

Put the inmate's full committed name and RIDOC ID number on the first line, then High Security Center, P.O. Box 8200, Cranston, RI 02920. Include your full first and last name and return address on the envelope.

Is mail to High Security Center opened, read, or scanned?

Expect it to be. Incoming personal mail is opened and inspected for contraband and can be read under the Rhode Island DOC (RIDOC)'s rules.

What can I send to High Security Center — photos, cards, or books?

Photos are generally allowed within the count limit; no polaroids, laminated, nude, or sexually explicit photos. Books and magazines must come directly from a publisher or approved vendor, not enclosed in personal mail.

What can't I mail to High Security Center?

Do not send: Cash, personal cheques, money orders, or postage stamps; Coloured, padded, or non-white envelopes; Ink other than blue or black; markers, crayon, glitter, stickers, or labels; Polaroids, laminated items, or anything other than plain paper; Paper treated with any substance, perfume, or drug residue; Nude, sexually explicit, or contraband-promoting content. Prohibited items get the letter rejected or destroyed.

What if the person has been transferred or released?

The letter will not reliably reach them or come back to you. Confirm they are still at High Security Center before mailing, since the Rhode Island DOC (RIDOC) moves people without notice.

Can the inmate write back to me?

Yes, if you include a complete return address. Inmates can send outgoing mail, though they may need to cover their own postage. PostPal prints your return address for you.

Sources

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

See the full Rhode Island inmate mail rules — what you can and can’t send, photos & more →

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