You cannot look up your Social Security number online through a public search tool

There is no website where you enter your name and birth date and receive your Social Security number back. The Social Security Administration does not publish a public lookup service, and no legitimate third-party site can retrieve a number you have lost.

If you need your number, you have three real options: request it from Social Security directly, find it on documents you already have, or contact an organization that holds a copy on file. Each route takes a different amount of time and requires different paperwork.

Key Takeaways

  • Your Social Security number appears on tax documents, W-2 forms, bank statements, and insurance paperwork — checking these first is faster than contacting Social Security.
  • You can request your number from the Social Security Administration by mail, phone, or in person at a local office, but you must prove your identity with a birth certificate or passport.
  • Employers, banks, and former employers have your number on file and can confirm it if you call with proof of identity.
  • Websites claiming to "find" or "recover" your Social Security number for a fee are scams and will not retrieve anything.

Check documents you already have at home

Your Social Security number is printed on several documents most people keep. Start here because you will have your answer in minutes without contacting anyone.

Look for: a W-2 form from any job you have held (the number appears in the upper right corner), a 1099 form if you have been self-employed or a contractor, a tax return you filed yourself, a bank or credit card statement, a mortgage or loan document, health insurance paperwork, or a Social Security card itself if you can locate it. Any of these will show your complete number.

If you have filed taxes through an online tax software in the past, you can log into that account — TurboTax, H&R Block, TaxAct, and similar platforms store your number in your profile. You do not need to file again; just sign in and view your saved information.

Contact your employer or former employer

Your current or most recent employer has your Social Security number in their payroll system. Call the human resources or payroll department, confirm your identity by providing your full name and hire date, and ask them to verify the number on file.

If you worked somewhere years ago, you can still call. Employers are required to keep payroll records for at least three to seven years depending on the state, so older employers often have the information. If the company no longer exists or you cannot reach them, ask if they have a records department or forwarding number.

Request your number directly from Social Security

The Social Security Administration will send you your number by mail if you request it in person or by phone. You cannot request it online, but the process is straightforward if you have proof of identity.

By phone: Call Social Security at 1-800-772-1213, Monday through Friday, 7 a.m. to 7 p.m. your local time. Have your birth certificate, passport, or state ID ready. The representative will verify your identity and can tell you your number over the phone when ready. They will also mail you a written confirmation.

In person: Visit your local Social Security office. Bring your birth certificate or passport and a photo ID. You can find your nearest office at ssa.gov/locator. Walk-ins are accepted, but wait times vary; calling ahead to schedule an appointment is faster. The office will provide your number on the spot.

By mail: read Form SS-5 from the Social Security website, fill it out, and mail it with a copy of your birth certificate and photo ID to your regional Social Security office. This takes two to four weeks. Use this route only if you cannot reach Social Security by phone or visit an office.

Check with banks and financial institutions

Any bank where you have or had an account has your Social Security number. Call the customer service number on your bank card or statement, verify your identity with your account number and personal details, and ask them to confirm the number they have on file.

This works even for closed accounts, as banks keep records. If you have moved or changed banks, your old bank can still look it up. Credit unions follow the same process.

Recognize and avoid scams

Do not pay anyone to find your Social Security number. Websites and services that claim to "recover," "locate," or "retrieve" your number for a fee are scams. They cannot access Social Security's records, and no legitimate service charges money for this information.

Real Social Security services are free. The Social Security Administration never charges for requests, and employers and banks do not charge to confirm your number. If a website asks for payment, a credit card, or personal information beyond what you would give your bank, close the browser and do not return.

Scam sites often use official-looking logos and domain names similar to ssa.gov. The real Social Security website is ssa.gov only — no hyphens, no variations. If you are unsure whether a site is real, call Social Security directly at 1-800-772-1213 to ask.

What to do if you suspect identity theft

If you cannot find your Social Security number and you suspect someone else may be using it, contact Social Security and the Federal Trade Commission. Call Social Security at 1-800-772-1213 and explain the situation. They can place a note on your account and issue you a new number if necessary.

File a report with the FTC at IdentityTheft.gov. This creates an official record and gives you a recovery plan. You can also place a fraud alert or credit freeze with the three major credit bureaus — Equifax, Experian, and TransUnion — to prevent someone from opening accounts in your name.

Frequently Asked Questions

Can I look up someone else's Social Security number?

No. Social Security numbers are private. You cannot look up another person's number, and no legitimate service will retrieve it for you. If you need someone's number for employment or legal purposes, you must ask them directly or go through official channels like a court order.

What if I lost my Social Security card but remember my number?

You do not need to do anything when ready. Your number does not change if you lose the card. If you need a replacement card, visit your local Social Security office or call 1-800-772-1213. You can request a new card by mail using Form SS-5, which takes two to four weeks.

Do I need my Social Security number to file taxes if I lost it?

Yes, you need your number to file a tax return. Use one of the methods above to retrieve it before you file. If you file without it, the IRS will reject your return and you will have to resubmit it with the correct number.

Is it safe to give my Social Security number to my employer?

Yes. Your employer needs your number for payroll and tax reporting. They are required by law to keep it confidential. Do not give your number to anyone else unless you initiated contact with them and you are certain they are legitimate.

How long does it take to get my number from Social Security by mail?

Two to four weeks from the date Social Security receives your Form SS-5 and supporting documents. Processing times vary by location and current volume. If you need your number faster, call or visit an office in person.