You can replace your Social Security card for free if it is lost or stolen, Do you know your number?
I am 18 what do I need?
you can apply for a replacement card online
yes I know my number do I still need a card?
you may not need to get a replacement card
read For more information about creating my Social Security account and getting a replacement card online
Can I apply online?
What documents do I need?
original documents of citizenship
Have you already established your u.s. citizenship with us?