Frequently Asked Questions - SSA
Social Security Administration
A Social Security number is important because you need it to get a job, collect Social Security benefits and receive some other government services. Many other businesses, such as banks and credit companies, also ask for your number.If you are a noncitizen living in the United States, you also may need a Social Security number. For more information, see Social Security Numbers For Noncitizens (Publication No. 05-10096).