How to mail a letter to an inmate at Walnut Grove Correctional Facility
To write to someone held at Walnut Grove Correctional Facility, address your envelope to the inmate's full committed name and MDOC number, Walnut Grove Correctional Facility, PO Box 389, Walnut Grove, MS 39189. Walnut Grove Correctional Facility is a state prison in Walnut Grove, Mississippi, operated by the Mississippi Department of Corrections. Under the Mississippi Department of Corrections (MDOC)'s rules, incoming personal mail is opened and scanned at the facility, and the inmate receives a digital scan or printout rather than your original.
Inmate mail — Walnut Grove Correctional Facility
[Inmate's full committed name] [MDOC number] Walnut Grove Correctional Facility PO Box 389 Walnut Grove, MS 39189
Put the inmate's full committed name and MDOC 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 MDOC number is returned.
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Walnut Grove Correctional FacilityPO Box 389Walnut Grove, MS 39189
Your letter, printed and mailed for you.
Key facts
- Send mail to Walnut Grove Correctional Facility, PO Box 389, Walnut Grove, MS 39189 — the institution's inmate-mail address, not its street address.
- Mississippi sends mail to each facility directly — address it to the person's full name and MDOC number, then their current housing unit, then the facility's own mailing address.
- Include your full name and return address on the envelope; mail without a return address can be rejected.
- Incoming mail is opened and inspected for contraband before delivery, and facilities may photocopy correspondence rather than pass along the original.
- Confirm the person's current facility before mailing — Mississippi inmates are transferred between institutions without notice.
- 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
Confirm the person is still at Walnut Grove Correctional Facility
Inmates are transferred between facilities without notice. Confirm they are still at Walnut Grove Correctional Facility — and double-check the MDOC number — before you mail anything, using the Mississippi Department of Corrections (MDOC)'s official inmate locator.
- 2
Address it exactly
First line: the inmate's full committed name and MDOC number. Then Walnut Grove Correctional Facility, PO Box 389, Walnut Grove, MS 39189. Add your full return address.
- 3
Keep the contents allowed
Plain letter-size paper is safest. Remember it will be opened and scanned, so send copies of photos or documents you are willing to lose. 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
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 Walnut Grove Correctional Facility?
Put the inmate's full committed name and MDOC number on the first line, then Walnut Grove Correctional Facility, PO Box 389, Walnut Grove, MS 39189. Include your full first and last name and return address on the envelope.
Is mail to Walnut Grove Correctional Facility opened, read, or scanned?
Yes. Under the Mississippi Department of Corrections (MDOC)'s rules, incoming personal mail is opened and scanned at the facility, and the inmate receives a photocopy or digital scan rather than your original. Originals are not returned to you.
What can I send to Walnut Grove Correctional Facility — photos, cards, or books?
Up to 7 photos per envelope; use blue or black ink for the letter itself. Softcover books and publications must be sent directly from a publisher, distributor, or approved vendor — up to 3 books per order.
What can't I mail to Walnut Grove Correctional Facility?
Do not send: Cash, checks, money orders, or postage stamps; Any item other than paper (no polaroids, laminated items, or enclosures); Nude, sexually explicit, or contraband-promoting content; Stickers, glitter, glue, tape, perfume, lipstick, or crayon/marker. 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 Walnut Grove Correctional Facility before mailing, since the Mississippi Department of Corrections (MDOC) 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 September 2026 against official sources. Always confirm on the official site before time-sensitive filings.
See the full Mississippi inmate mail rules — what you can and can’t send, photos & more →