Washington inmate mail
Send a letter to an inmate in Washington
Confirm the Washington DOC number, cell assignment, and current prison address, then write online. PieterPost prints, addresses, stamps, and mails your physical letter.
Choose their Washington facilityWashington state-prison addresses
Washington facility-specific address format
Washington personal mail goes directly to the recipient's current DOC prison. Use that prison's correspondence address.
A prison's correspondence address can differ from the physical address used for visits or deliveries. Include the cell or room assignment when available.
Address format
Three simple steps
How to send a letter to an inmate in Washington
Choose the current facility and add the inmate's DOC 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 Washington guidance
Helpful inmate-mail rules
- Letter length
- Washington publishes no universal page limit. Check current policy and the receiving prison before sending an unusually long letter.
- Paper format
- Use plain, readable pages without unapproved enclosures. Ordinary mail is processed at the current prison.
- Envelope and address
- Include the full committed name, DOC number, cell or room when available, prison correspondence address, and your complete return address.
- How it arrives
- Accepted correspondence is processed at the current Washington prison; public instructions identify no statewide off-site scanning box.
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:
- Cash, checks, stamps, gift cards, or other valuables
- Stickers, glitter, perfume, glued objects, or unapproved attachments
- Polaroids or photographs outside current content, size, quantity, and property rules
- Electronic, musical, padded, glittered, scented, layered, or pop-up cards
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
Washington 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 a Washington state prison?
Confirm the DOC number, current prison, cell or room assignment, and correspondence address. Write online and PieterPost will print your letter, add an envelope and postage, and mail it.
Which Washington prison address should I use?
Use the correspondence address for the recipient's current prison. Include the full committed name, DOC number, and cell or room assignment when available.
How do I find the DOC number and current Washington prison?
Use Washington DOC's incarcerated search to confirm the DOC number and current prison. Consult the prison contacts page for its correspondence address and recheck after a transfer.
How long can a Washington prison letter be?
Washington's public page gives no universal page limit. Current mail policy, property limits, and the receiving prison can restrict unusually large mailings, so check before sending one.
Does this Washington guidance cover local and federal facilities?
No. This page covers adults in Washington DOC state prisons. County jails, federal prisons, juvenile facilities, and other custody settings use separate addresses and rules.