How to send a card or letter to a patient at Seattle Children's Hospital
To send a get-well card or letter to someone admitted to Seattle Children's Hospital, address the envelope to the patient's full name, then Seattle Children's Hospital, PO Box 5371, Seattle WA 98145-5005. Seattle Children's Hospital is a pediatric hospital in Seattle, Washington. Add their room number with their name, include your return address so they can write back, and confirm they're still admitted before mailing anything time-sensitive — hospital stays are short.
Mail to a patient — Seattle Children's Hospital
[Patient's full name] + room number Seattle Children's Hospital PO Box 5371 Seattle WA 98145-5005 United States
Get-well cards, letters, and printed photos for someone admitted to Seattle Children's Hospital. Write the patient's full name on the top line; add their room number on the same line or just below (Seattle Children's Hospital asks for it). Confirm they're still admitted before you send — stays are short.
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Your name
Your return address
Seattle Children's HospitalPO Box 5371Seattle, WA 98145-5005
Your letter, printed and mailed for you.
Key facts
- Write the patient's full name on the first line and "Seattle Children's Hospital" below it.
- Seattle Children's Hospital asks for the patient's room number — add it with their name so volunteers can deliver it fast.
- Confirm the patient is still admitted before mailing — mail that arrives after discharge is usually returned, not forwarded.
- Cards, letters, and printed photos reach the bedside; flowers, latex balloons, and food are restricted on many units — check first.
- Include your full return address so they can write back.
- PostPal prints your card and mails it for you — no printer, envelope, stamps, or post office trip.
How to send your letter
- 1
Confirm they’re still admitted
Hospital stays are short, and mail that lands after a patient goes home is usually returned, not forwarded. Before you send anything time-sensitive, check with the family that your person is still admitted to Seattle Children's Hospital and, if you can, get their current room number.
- 2
Address it to the patient at the hospital
First line: the patient's full name. Add their room number here too — Seattle Children's Hospital asks for it. Next line: Seattle Children's Hospital. Then the address: PO Box 5371, Seattle WA 98145-5005, United States.
- 3
Keep it flat and cheering
A card, a letter, or printed photos are perfect and easy for volunteers to deliver to the room. Skip cash and anything valuable. Flowers, latex balloons, and food are restricted on many units for patient safety, so check with the unit before sending those — a card always gets through.
- 4
Send it without a trip to the post office
Write or upload your card to PostPal with the address above prefilled. We print it, add your return address so they can write back, and mail it for you — no printer, stamps, or post office run, which is what most people use to reach someone in hospital from out of town.
Common questions
How do I send a card to a patient at Seattle Children's Hospital?
Address it to the patient's full name on the first line, Seattle Children's Hospital on the second line, then the mailing address: PO Box 5371, Seattle WA 98145-5005. Include the patient's room number with their name — Seattle Children's Hospital asks for it — and add your own return address so they can write back.
What is the mailing address for patients at Seattle Children's Hospital?
Seattle Children's Hospital, PO Box 5371, Seattle, WA 98145-5005, USA. Seattle Children's Hospital is a pediatric hospital in Seattle, Washington. Address mail to the patient's name care of the hospital, and confirm they're still admitted before sending anything time-sensitive.
Will the patient actually get my card?
Yes, as long as they're still admitted. Hospitals route incoming patient mail through a mailroom or volunteers who deliver it to the room, usually within a day or two. If the patient has already been discharged, mail is generally returned rather than forwarded — which is why it's worth confirming the stay before you send.
Can I send flowers, balloons, or a gift instead?
PostPal sends letters and cards, not parcels or flowers. Many units restrict fresh flowers, latex balloons, and food for patient safety anyway, and children’s units are especially strict, so a card or letter is the surest thing to reach the bedside. Never send cash.
How do I mail a card to Seattle Children's Hospital without a printer?
Write or upload your card to PostPal with the address prefilled. We print it, add your return address, and mail it for you — no printer, stamps, or post office trip — which is how most people send a get-well card to someone in hospital from another city.
Sources
Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.