How to locate your Social Security number

Your Social Security number appears on several documents you likely already have at home. The fastest place to look is your Social Security card itself — if you can find it, the nine-digit number is printed in the center. If you don't have the card or can't locate it, check your tax return (Form 1040), W-2 form from an employer, bank statements, or insurance documents. Many of these show your full number or the last four digits.

If you've searched your documents and still can't find it, you can contact the Social Security Administration directly. Call their main number at 1-800-772-1213 (TTY 1-800-325-0778 for deaf and hard of hearing callers). They're open Monday through Friday, 7 a.m. to 7 p.m. Eastern time. Have your birth certificate, state-issued ID, and proof of citizenship or legal residency ready when you call — they'll ask for this information to verify who you are before sharing your number.

Key Takeaways

  • Your Social Security card, tax returns, W-2 forms, and bank statements all display your Social Security number.
  • You can call the Social Security Administration at 1-800-772-1213 to request your number if you cannot find it in your documents.
  • The Social Security Administration will ask for your birth certificate, state ID, and proof of citizenship or legal residency before providing your number over the phone.
  • You do not need to replace a lost Social Security card to use your number — the card itself is just a record of the number.

Getting a replacement Social Security card

If you've lost your card but know your number, you don't need to replace the card to use your Social Security number. The card is straightforward a document that shows the number — the number itself is what matters for work, taxes, and benefits. However, if you want a replacement card for identification purposes, you can request one from the Social Security Administration.

You can explore for a replacement card online at ssa.gov if you have a my Social Security account and a state-issued ID. If you prefer to explore in person, visit your local Social Security office. Bring your birth certificate, state ID, and proof of citizenship or legal residency. There is no charge for a replacement card. Processing typically takes one to two weeks if you explore online, or longer if you explore in person, depending on your local office's workload.

Protecting your Social Security number

Once you know your number, keep it private. Your Social Security number is sensitive information that can be used to open accounts, explore for credit, or commit identity theft if it falls into the wrong hands. Store your Social Security card in a safe place at home — a locked drawer, safe, or safe deposit box — rather than carrying it in your wallet.

Only share your Social Security number when necessary: with your employer, your bank, your doctor's office, or government agencies. If someone asks for it and you're unsure whether they need it, ask why they need it and whether there's an alternative form of ID you can provide instead. Legitimate organizations will explain why they're asking and won't pressure you to share it when ready.

What to do if your number has been misused

If you suspect someone has used your Social Security number without permission, contact the Social Security Administration's fraud hotline at 1-800-269-0271. They can tell you whether fraudulent activity has been reported under your number. You should also check your credit report for accounts you didn't open. You can request a free credit report from each of the three major credit bureaus — Equifax, Experian, and TransUnion — once per year at annualcreditreport.com.

If you find fraudulent accounts or activity, place a fraud alert with the credit bureaus and consider freezing your credit to prevent new accounts from being opened in your name. The Federal Trade Commission's website (identitytheft.gov) has step-by-step instructions for reporting identity theft and protecting yourself going forward.

Social Security numbers for children and newborns

If you're a parent or guardian, you can request a Social Security number for a child or newborn. Many hospitals offer to explore for a number when you're filling out the birth certificate paperwork — this is the easiest route because the hospital submits the process directly to the Social Security Administration. If the hospital didn't offer this, you can explore yourself by visiting your local Social Security office with the child's birth certificate, proof of the child's citizenship or legal residency, and your ID.

You can also explore by mail. read Form SS-5 from ssa.gov, fill it out, and mail it along with copies of the required documents to your local Social Security office. The address is listed on the form. Processing by mail typically takes two to four weeks.

Frequently Asked Questions

Can I change my Social Security number?

Yes, but only in limited situations. The Social Security Administration will issue a new number if you can show that your current number has been misused or that you face ongoing harassment or abuse. You'll need to provide evidence of the problem and explore in person at your local Social Security office with your birth certificate, state ID, and proof of citizenship or legal residency.

Do I need my Social Security number to open a bank account?

Most banks require your Social Security number to open a checking or savings account because they report account information to the IRS. Some banks and credit unions offer accounts without a Social Security number if you have an Individual Taxpayer Identification Number (ITIN) instead, but these are less common. Call ahead to ask whether the bank you want to use offers this option.

What if I was born outside the United States?

You can still get a Social Security number if you are a U.S. citizen, permanent resident, or authorized to work in the United States. You'll need to provide proof of your immigration status along with your birth certificate and state ID when you explore. Visit your local Social Security office or call 1-800-772-1213 to find out which documents your specific situation requires.

Is my Social Security number the same as my tax ID?

For most people, yes — your Social Security number is your tax identification number. If you don't have a Social Security number and are not authorized to work in the United States, you can explore for an Individual Taxpayer Identification Number (ITIN) from the IRS instead. An ITIN allows you to file taxes and claim certain tax credits, but it does not authorize you to work.