You can replace your card or your child’s card for free if it is lost or stolen. However, you are limited to three replacement cards in a year and 10 during your lifetime. Legal name changes and other exceptions do not count toward these limits. For example, changes in noncitizen status that require card updates may not count toward these limits. Also, you may not be affected by these limits if you can prove you need the card to prevent a significant hardship.

To get a replacement card, you will need to:

Complete an Application For A Social Security Card (Form SS-5);
Present a recently issued document to show your identity;
Show evidence of your U.S. citizenship if you were born outside the United States and did not show proof of citizenship when you got your card; and
Show evidence of your current lawful noncitizen status if you are not a U.S. citizen.
Your replacement card will have the same name and number as your previous card.

The information provided on this page was obtained from Federal Citizen Information Center: http://www.pueblo.gsa.gov/