A Social Security number (SSN) is the nine-digit identifier the United States uses for work, tax withholding, credit, and many bank and benefits systems. The Social Security Administration (SSA) issues it. Most newcomers who can lawfully work apply soon after arrival because employers, banks, and state motor vehicle agencies often ask for it.
Who can get an SSN, and what do you bring?
U.S. citizens can request a number. Noncitizens usually need current lawful immigration status that includes Department of Homeland Security work authorization, or a narrow non-work reason documented by a government agency. Work-authorized status is the common path for employees on H-1B, L-1, E, TN, and similar visas, asylees, refugees, and lawful permanent residents.
Complete Form SS-5 (Application for a Social Security Card), or start the online Social Security Number Application Process when SSA offers it for your situation, then finish in person with original documents. SSA accepts originals or certified copies from the issuing authority, not ordinary photocopies or notarized copies.
Bring at least two documents that together prove age, identity, and U.S. citizenship or current lawful, work-authorized immigration status. A foreign passport plus an Employment Authorization Document (EAD, Form I-766), a Permanent Resident Card, or an Arrival/Departure Record (Form I-94) with work annotation are common combinations. If U.S. Citizenship and Immigration Services (USCIS) approved work authorization or permanent residence and you requested enumeration during that filing, SSA may mail the card under Enumeration Beyond Entry without a separate office visit.
How does the office visit and mailing work?
Find your field office or Social Security Card Center on SSA's locator, then check whether you need an appointment. People age 12 or older who have never had an SSN must usually apply in person. Staff review your documents, enter the application, and return the originals. After approval, SSA mails the card to the U.S. address on the application, often within several business days once processing finishes.
Keep the card secure. Employers and banks usually need the number, not repeated display of the plastic card. Report a lost card through SSA rather than inventing a temporary number.
When should you use an ITIN instead?
If you are not eligible for an SSN, do not invent one for tax forms. Apply for an Individual Taxpayer Identification Number (ITIN) from the Internal Revenue Service with Form W-7 when you need a taxpayer ID to file a U.S. return. An ITIN is not work authorization and does not replace an SSN for employment payroll once you become eligible for an SSN. When SSA later assigns an SSN, stop using the ITIN for wage reporting and update banks and tax accounts.
Common misconceptions
Receiving an SSN does not grant or extend a visa. Immigration status still comes from USCIS, the Department of State, or Customs and Border Protection.
An ITIN is not a substitute work permit. Form I-9 employment verification still requires List A or List B plus List C documents that prove identity and work authorization.
Summary
Apply at SSA with Form SS-5 and original passport plus immigration status evidence that shows you may work, or a documented non-work reason if that rare path applies. Prefer Enumeration Beyond Entry when USCIS offers it during a work or green-card filing.
Use the mailed card's number for jobs, taxes, and banking. If SSA cannot issue an SSN, pursue an ITIN for tax filing only and revisit SSA when your status becomes work-authorized.
Sources
Next in Country To Live: Browse rankings
Related questions
- Moving & paperworkHow do you get an ITIN in the United States in 2026?
- Moving & paperworkHow can a newcomer open a bank account in the United States in 2026?
- Moving & paperworkHow does Form I-9 work for newcomers in the United States in 2026?
- Moving & paperworkHow do you apply for work authorization in the United States in 2026?
- Moving & paperworkHow do newcomers file US federal taxes in 2026?
- Moving & paperworkHow do you build credit history in the United States in 2026?