Where to find your Social Security number

Your Social Security number appears on several documents you likely already have at home. The fastest way to find it is to check your Social Security card itself — a nine-digit number printed in the center. If you cannot locate the card, look for the number on your tax return (Form 1040), W-2 form from an employer, or bank statements linked to your account.

Medicare cards issued after 2015 no longer print your Social Security number, so those will not help. However, older Medicare cards do show it. If you have received unemployment benefits, disability payments, or retirement benefits from Social Security, the award letter sent to you by the Social Security Administration contains your number.

Your employer's records also hold your Social Security number — you can contact your human resources or payroll department and ask them to confirm it. If you are currently receiving any government benefits, the benefit statement or payment stub will display your number.

Key Takeaways

  • Your Social Security number is printed on your Social Security card, tax returns, W-2 forms, and most benefit statements or award letters.
  • You can contact the Social Security Administration directly by phone at 1-800-772-1213 (TTY 1-800-325-0778) to verify your number if you cannot find it on any document.
  • Creating a my Social Security account at ssa.gov lets you view your number, earnings record, and benefit estimates without visiting an office.
  • If you believe your Social Security number has been stolen or misused, report it to the Social Security Administration and the Federal Trade Commission.

Verifying your number through my Social Security

The Social Security Administration operates a free online account system called my Social Security at ssa.gov. Creating an account lets you view your actual Social Security number, check your earnings record, and see estimates of your future benefits — all without leaving home or calling an office.

To set up an account, go to ssa.gov/myaccount and select "Create an account." You will need to provide your name, date of birth, email address, and a phone number. The system will ask you security questions based on information in Social Security's records — questions about past addresses, loan amounts, or credit history. Answer these correctly and your account activates when ready.

Once logged in, your Social Security number appears on the main dashboard. You can also read a benefit verification letter that includes your number, which some employers or financial institutions request. This letter is free and you can print it or save it as a PDF.

Calling the Social Security Administration directly

If you do not have internet access or prefer to speak with someone, call the Social Security Administration's main line at 1-800-772-1213. The line is open Monday through Friday, 7 a.m. to 7 p.m. Eastern time. If you are deaf or hard of hearing, use the TTY number 1-800-325-0778.

When you call, have your name, date of birth, and mother's maiden name ready. A representative will verify your identity using this information and then confirm your Social Security number over the phone. Wait times are typically shorter early in the morning or late in the week.

You can also visit a Social Security office in person. Find your local office at ssa.gov/locator by entering your zip code. Bring a photo ID and proof of citizenship or legal residency. No appointment is required at most offices, though some locations now ask you to schedule one online first.

What to do if you cannot find or remember your number

If you have never received a Social Security card and need a number assigned, you must explore for one. The Social Security Administration issues cards to U.S. citizens, permanent residents, and certain temporary visa holders. You will need to provide proof of age (birth certificate), proof of citizenship or immigration status, and a photo ID.

If you had a number but lost the card, you can request a replacement card for free. Visit your local Social Security office or explore online at ssa.gov/myaccount if you already have an account set up. Replacement cards arrive by mail in one to two weeks.

If you believe someone else is using your Social Security number without permission, report it when ready to the Social Security Administration at 1-800-772-1213 and to the Federal Trade Commission at IdentityTheft.gov. The FTC will create a recovery plan and may issue an Identity Theft Report that you can share with banks, creditors, and other institutions.

Understanding what your Social Security number reveals

Your Social Security number is a nine-digit identifier assigned to you by the federal government. The first three digits indicate the state or region where the number was issued, the middle two digits are a group number, and the last four digits are a serial number. However, the Social Security Administration stopped using geographic patterns to assign numbers in 2011, so the first three digits no longer reliably indicate where you were born.

Your number is used to track your earnings record, calculate your retirement and disability benefits, and verify your identity for employment and financial accounts. It is also used by the Internal Revenue Service to match your tax returns, by banks to check your credit history, and by government agencies to prevent fraud.

Because your Social Security number is tied to your financial and legal identity, it is sensitive information. Avoid sharing it unless necessary — most businesses do not need it, and you can often request they use a different identifier instead.

Frequently Asked Questions

Can I change my Social Security number?

Yes, but only in limited circumstances. The Social Security Administration will issue a new number if you can show that someone else is using yours, that you are a victim of identity theft, or that using your current number creates a hardship due to religious or cultural beliefs. You must explore in person at a Social Security office with documentation of the reason.

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

For most people, yes — your Social Security number serves as your Individual Taxpayer Identification Number (ITIN) when you file taxes. However, non-citizens who do not have a Social Security number can obtain a separate ITIN from the Internal Revenue Service for tax purposes only.

What if I was born outside the United States?

You can still have a Social Security number if you are a U.S. citizen, permanent resident, or authorized to work in the country. You will need to provide proof of your immigration status along with your birth certificate and photo ID when you explore for a number or card.

How do I know if my Social Security number has been compromised?

Check your credit report for accounts you did not open, monitor your bank and credit card statements for unauthorized charges, and watch for unexpected tax returns or benefit notices. You can view your free credit report at AnnualCreditReport.com. If you spot fraud, contact the Social Security Administration and file a report with the Federal Trade Commission at IdentityTheft.gov.