You can get a Social Security number for your newborn through the hospital at birth, or apply afterward through your local Social Security office
The easiest path is to request the number while you are still at the hospital. Most hospitals offer this service as part of the birth registration process — you fill out a form, and the hospital sends the application to Social Security on your behalf. The number typically arrives by mail within two to four weeks after you leave the hospital.
If you did not apply at the hospital, or if you adopted a child or became a guardian, you can apply in person at your nearest Social Security office. You will need to bring original documents proving the child's age, identity, and citizenship, along with proof of your relationship to the child. The process takes longer this way — usually four to six weeks — because Social Security processes the application directly rather than through the hospital's batch system.
Key Takeaways
- Applying at the hospital before you leave is faster and requires less paperwork than applying later at a Social Security office.
- You will need the child's birth certificate, your ID, and proof of your relationship to the child if you apply in person.
- The number arrives by mail; Social Security does not issue it on the spot at the office.
- You do not need a Social Security number to bring your newborn home from the hospital, so there is no rush if you missed the hospital deadline.
Applying at the hospital before discharge
When you are filling out birth registration paperwork at the hospital, ask the staff whether they offer Social Security number applications. Most hospitals do, and the form is usually included in the packet of documents you sign before leaving. The form asks for your name, address, and relationship to the child — basic information the hospital already has on file.
The hospital collects these forms and sends them to Social Security in batches, which is why the process is faster than applying in person. You do not pay a fee. The Social Security number arrives at your home address within two to four weeks, printed on a card or in a letter depending on your state's procedures.
This is the path most parents take, and it requires almost no extra effort on your part. If the hospital staff does not mention it, ask directly — some hospitals require you to request the service rather than offering it automatically.
Applying in person at a Social Security office
If you did not apply at the hospital, go to your local Social Security office in person. You can find the nearest office by visiting the Social Security Administration website and using their office locator tool, or by calling 1-800-772-1213. You do not need an appointment at most offices, though some locations now require one — call ahead to check.
Bring the child's original birth certificate, your government-issued photo ID, and proof of your relationship to the child (your own birth certificate or adoption papers work). If you are applying on behalf of a child you are not the parent of, bring documentation of guardianship or custody. Social Security will not accept photocopies of the birth certificate, so bring the original.
The staff will fill out the application with you and submit it on the spot. The number arrives by mail in four to six weeks. You will receive a letter or card at the address you provide, depending on your state.
What documents you need for in-person applications
Social Security requires proof of three things: the child's age and identity, citizenship, and your relationship to the child. The following documents meet these requirements:
| What you need to prove | Documents that work |
|---|---|
| Child's age and identity | Original birth certificate (required); hospital birth record or baptism certificate (acceptable if birth certificate is not yet available) |
| Citizenship | Birth certificate showing birth in the United States; U.S. passport; naturalization papers |
| Your relationship to the child | Your own birth certificate (if you are the parent); adoption decree (if you adopted); court order (if you are the guardian) |
| Your identity | Driver's license; passport; state ID card |
If the birth certificate is not yet ready when you want to apply, ask the hospital or vital records office for a certified copy or a letter stating the birth was registered. Social Security will accept this temporarily while you wait for the official certificate to arrive.
Timeline and what to expect after you apply
Hospital applications usually take two to four weeks from the time the hospital submits the batch. In-person applications at a Social Security office take four to six weeks. These timelines can vary depending on how busy your local office is and whether Social Security needs to verify any information.
You will receive the number by mail at the address you provided on the application. In most states, it comes on a Social Security card. In a few states, it arrives in a letter instead. Do not call Social Security to check on the status before six weeks have passed — they cannot speed up the process, and the call lines are often busy.
Once the number arrives, keep the card in a safe place. You will need it to open a bank account, enroll in school, or apply for a job when the child is older. For now, you may want to store it somewhere secure rather than carrying it in a wallet.
Why your newborn needs a Social Security number
You do not need the number immediately — there is no legal requirement to have one before leaving the hospital. However, you will need it within the first year for several practical reasons. If you want to open a savings account or investment account for the child, the bank will ask for the number. If you claim the child as a dependent on your tax return, the IRS requires the number. Some states also require it to enroll a child in school, though this varies by state.
Getting the number early, while you are at the hospital, saves you a trip to the Social Security office later and gets the number on file sooner. But if you miss the hospital window, there is no penalty — you can apply anytime after birth.
If you adopted or became a guardian
If you adopted a child born in the United States, you can apply for a Social Security number using the same in-person process at a Social Security office. Bring the child's birth certificate and your adoption decree. If the child was born outside the United States, the process is different — you will need to show proof of citizenship or a visa, and Social Security may require additional documentation from U.S. Citizenship and Immigration Services.
If you are a legal guardian but not the adoptive parent, bring the court order establishing guardianship along with the child's birth certificate and your ID. The rules are the same as for parents.
Frequently Asked Questions
Can I get the Social Security number the same day I apply in person?
No. Social Security mails the number to you after processing the application, which takes four to six weeks. They do not issue numbers on the spot at the office. The hospital application process is faster because the hospital submits applications in batches.
What if the birth certificate is not ready when I want to apply?
Ask the hospital or your state's vital records office for a certified letter stating that the birth was registered. Social Security will accept this temporarily while you wait for the official birth certificate. Once the certificate arrives, you do not need to reapply.
Do I need the Social Security number before I leave the hospital?
No. There is no legal requirement to have the number before discharge. You can apply at the hospital or wait and apply at a Social Security office later. Most parents apply at the hospital because it is simpler, but the timing is up to you.
What if I lost the Social Security card?
You can request a replacement card at your local Social Security office. Bring the child's birth certificate and your ID. There is no fee for a replacement card. You can also call 1-800-772-1213 to request a replacement by mail, though this takes longer.
Can I apply for a Social Security number for a child born outside the United States?
Yes, but the process is more complex. You will need to show proof of the child's citizenship status or visa, and Social Security may require documents from U.S. Citizenship and Immigration Services. Apply in person at a Social Security office with the child's birth certificate and your ID, and ask the staff what additional documents you need based on the child's immigration status.