Where to mail a TransUnion security freeze request
To freeze or unfreeze your TransUnion credit file by mail, send your request to TransUnion, P.O. Box 160, Woodlyn, PA 19094. A security freeze blocks new creditors from pulling your report at all, which stops most new-account identity theft — it's a different right, and a different mailing address, from disputing an error under the FCRA. Freezing is free, and mailed requests must include enough identifying information for TransUnion to verify you.
TransUnion — mail-in security freeze requests
TransUnion P.O. Box 160 Woodlyn, PA 19094
Freezing or unfreezing your TransUnion credit file by mail.
Write it now. We print & mail it for $5.
Type your letter in the browser. We print it, stamp it, and hand it to USPS — usually same business day. No printer, no stamps, no post office.
$5 flat · postage included · no account needed
- You write & pay
- We print & envelope
- USPS, next business day
- Confirmation of Mailing emailed
Your name
Your return address
TransUnionP.O. Box 160Woodlyn, PA 19094
Your letter, printed and mailed for you.
Key facts
- Mailed freeze requests go to TransUnion, P.O. Box 160, Woodlyn, PA 19094 — a different address from TransUnion's dispute mail.
- Adding, lifting, or removing a security freeze is free under federal law.
- Include your full name, current and past addresses, date of birth, Social Security number, and a copy of a government-issued ID and proof of address.
- A freeze blocks new creditors from viewing your report, so it stops most new-account fraud — but you'll need to lift it temporarily before applying for new credit yourself.
- Freezing with TransUnion does not freeze your file at the other bureaus — freeze each one separately if you want full protection.
How to send your letter
- 1
Gather your identifying information
Collect your full name, Social Security number, date of birth, and current and prior addresses (typically the last two years), plus a copy of a government ID and a recent utility bill or bank statement as proof of address.
- 2
Write your freeze request
State clearly whether you want to add, temporarily lift, or permanently remove a security freeze on your TransUnion file, and include all your identifying information so the request isn't rejected for insufficient ID.
- 3
Mail it to TransUnion
Address it to TransUnion, P.O. Box 160, Woodlyn, PA 19094. Processing by mail typically takes a few business days from receipt.
- 4
Send it without a printer
Write your freeze request in PostPal, attach copies of your ID and proof of address, and we print, envelope, and mail it via USPS for $5 — with a dated confirmation email as your proof of mailing.
Common questions
What is the mailing address to freeze my TransUnion credit report?
TransUnion, P.O. Box 160, Woodlyn, PA 19094. Include your full identifying information — name, SSN, date of birth, addresses, and copies of ID — or the request may be rejected.
Is a security freeze the same as a fraud alert or a dispute?
No. A freeze blocks anyone from viewing your report until you lift it — the strongest protection against new-account fraud. A fraud alert just warns lenders to verify your identity before extending credit. A dispute is for correcting a specific inaccurate item, not for blocking access altogether.
Does freezing my credit cost anything?
No — adding, temporarily lifting, or permanently removing a security freeze is free at all the nationwide credit bureaus under federal law.
Do I need to freeze all the credit bureaus, not just this one?
Yes, if you want full protection. Freezing with TransUnion only blocks access to your TransUnion file — a new creditor that pulls from a different bureau can still see your report there.
Sources
Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.