Go to Social Security's website and read the instructions noted under "Get a New or Replacement Card."
Print an Application Form SS-5 and complete per instructions.
Collect the documents you will need in order to complete the application form. There are various options and explanations as to the documents you will need depending on if you are an adult or child--born in the United States, foreign born, but a U.S. citizen or a non-citizen. You will also need to identify if you are applying for a new card, replacement card or corrected card. All the needed information can be found under the icon marked "Learn what documents you need."
Depending on your status and what options you choose there will be a variety of forms you will need in order to apply for a Social Security card number. These documents vary such as a U.S. birth certificate or
a passport for those U.S. born and over 12 years old and you might also need your U.S. driver's license or state-issued non-driver identification card. If you do not have these documents you can also use an employee ID card, school ID card, health insurance card (not a Medicare card), U.S. military ID card or adoption decree. For non-citizens with permission to work from the Department of Homeland Security (DHS) you can apply for a Social Security number, but will need documents proving immigration status, work eligibility, age and identity. To prove your U.S. immigration status, you must show your current U.S. immigration document, I-94, Arrival/Departure Record that was issued to you when you arrived in the United States. If you are an F-1 or M-1 student, you also must show your I-20, certificate of eligibility for nonimmigrant student status. If you are a J-1 or J-2 exchange visitor you must show us your DS-2019, certificate of eligibility for exchange visitor status.