How to Find Your Social Security Number Without Your Card

If you’ve lost your card, you can usually find your Social Security number without the card by checking documents you already have at home: a W-2, a prior federal tax return, an old pay stub, a mortgage or student loan file, or a DD Form 214 if you served. When none of those turn up the number, the Social Security Administration can look it up for you once you verify your identity, and a replacement card is free.

Documents at Home That Show Your Full SSN

Start with paperwork you already keep. Most people find the number within a few minutes.

W-2 forms. Your employer prints the full nine digits in Box A of every W-2.¹
Federal tax returns. Your SSN sits near the top of every Form 1040. A joint return also shows your spouse’s number and any dependent’s.
Pay stubs. Many employers still include the full SSN, though some now mask everything but the last four digits. Older stubs are your better bet.
Loan and financial paperwork. Mortgage applications, student loan files, and older bank account agreements typically required the full number.
Military discharge papers. Veterans can find the SSN in Block 3 of the DD Form 214.

One document worth ruling out: a current Medicare card. Before April 2019, Medicare cards displayed the beneficiary’s Social Security number, but the Centers for Medicare and Medicaid Services replaced them all with cards that use a randomly assigned Medicare Beneficiary Identifier. A card issued today won’t help.²

The IRS Wage and Income Transcript

People often forget this one. Standard IRS tax return transcripts mask all but the last four digits of your SSN, but the Wage and Income transcript is an exception and shows the full number along with employer information. You can request one through your IRS online account or by calling the IRS.³

Look It Up Through My Social Security

The SSA’s online portal at ssa.gov/myaccount lets you handle Social Security business without visiting an office. Setting up an account requires a Login.gov or ID.me sign-in, and both walk you through identity verification using personal information, a photo ID, and sometimes a selfie or phone check.⁴

Once you’re in, you can view your Social Security statement and earnings history, both tied to your SSN, and you can request a replacement card online if you meet the eligibility rules for online processing. Not everyone qualifies, and the system may direct you to schedule an in-person appointment instead.⁵

Call or Visit the SSA

When your records come up empty, the SSA will help by phone or in person.

By Phone

The national toll-free number is 1-800-772-1213, staffed Monday through Friday from 8:00 a.m. to 7:00 p.m. local time, with an automated system available around the clock. Waits tend to be shorter early in the morning, later in the week, and near the end of the month.⁶

Set your expectations. Representatives verify your identity before discussing anything on your record, and they have limits on what they can share over the phone. Calling is most useful for guidance on next steps, scheduling an office visit, or fixing a specific issue.

In Person

A local Social Security office is the most direct route when you can’t find the number anywhere else. Staff review your identity documents on the spot and can pull up your record once they’ve confirmed who you are. Use the office locator at ssa.gov to find the nearest location and check whether an appointment is required.

What to Bring for Identity Verification

Whether the SSA is looking up your number or issuing a replacement card, it needs to confirm your identity, your age, and your citizenship or immigration status. Bring originals or copies certified by the issuing agency. Photocopies and notarized copies are not accepted.⁷

For identity, an unexpired U.S. driver’s license, a state-issued non-driver ID card, or a U.S. passport all work. For citizenship, the SSA accepts a U.S. birth certificate, U.S. passport, Certificate of Naturalization, or Certificate of Citizenship.⁷

Non-citizens show current immigration documents from the Department of Homeland Security: a Permanent Resident Card (Form I-551), an Employment Authorization Document (Form I-766), or an Arrival/Departure Record (Form I-94) paired with an unexpired foreign passport. F-1 and M-1 students also bring their I-20, and J-1 or J-2 exchange visitors bring their DS-2019.⁷

If your legal name has changed, bring proof: a marriage certificate, divorce decree, court order approving the change, or a Certificate of Naturalization showing the new name.⁷

Getting a Replacement Card

Once you know the number, you may not even need the physical card. Most situations that ask for an SSN accept the number itself. If you do want a replacement, it’s free.⁵

You fill out Form SS-5, the Application for a Social Security Card, and submit it with your identity and citizenship documents.⁸ Three submission paths:

Online, through your my Social Security account, if you qualify for online processing.
In person at a local Social Security office, where staff review your originals and hand them back the same day.
By mail, sending Form SS-5 and original documents to your local office. Mail takes longer and puts your originals in the postal system.

The SSA typically mails replacement cards within 7 to 10 business days of processing. Mail-in applications run 2 to 4 weeks total because of extra processing on the SSA’s end.⁹

Finding a Child’s Social Security Number

Most parents apply for a child’s SSN at the hospital right after birth. The hospital sends the information to the state vital records office, which forwards it to the SSA, and the card arrives by mail a few weeks later.¹⁰

If you’ve misplaced the number, the same records mentioned above will usually have it: your tax return for any year you claimed the child as a dependent, health insurance enrollment forms, and school financial aid applications. If none of that works, you can visit a Social Security office with the child’s birth certificate and your own ID and request the number directly.

If You Live Outside the United States

U.S. citizens abroad can apply for a replacement card or look up their SSN through a Federal Benefits Unit at designated U.S. embassies and consulates. Not every embassy has one, so check the list at ssa.gov/foreign first. You can also mail Form SS-5 to an FBU. If you don’t know your number, the FBU can search for it using your biographical information once you show proper identification in person.¹¹

Avoid Paid Third-Party Sites

Searches for lost SSNs turn up third-party sites offering to help you find your number or apply for a replacement card for a fee. The SSA never charges for a replacement card, and there’s no reason to pay a middleman for something you can do yourself for free. Any site asking for payment, gift cards, cryptocurrency, or wire transfers is a scam.¹²

The SSA also won’t call threatening arrest, claim your SSN has been “suspended,” or ask you to pay to activate a benefit increase. Hang up or ignore suspicious calls, texts, and emails, and report them at oig.ssa.gov.¹²

1
Internal Revenue Service. General Instructions for Forms W-2 and W-3 (2026)
2
Centers for Medicare & Medicaid Services. CMS Reveals New Medicare Card Design
3
Internal Revenue Service. About Tax Transcripts
4
Social Security Administration. my Social Security
5
Social Security Administration. Replace Social Security Card
6
Social Security Administration. Contact Social Security by Phone
7
Social Security Administration. Learn What Documents You Will Need to Get a Social Security Card
8
Social Security Administration. Application for Social Security Card Form SS-5
9
Social Security Administration. How Long Will It Take to Get a Social Security Card
10
Social Security Administration. How Long Does It Take to Get My Child’s Social Security Number
11
Social Security Administration. Joint Frequently Asked Questions on Obtaining Social Security Numbers, Expatriation, and Tax Implications
12
Social Security Administration. Protect Yourself from Scams