Instructions to Apply for a Social Security Number
In order to apply to the Social Security Administration for a number, you must have the following documents:
The Social Security Administration is located at 2200 State Route 10, 2nd Floor, Parsippany, NJ. The hours are 9 a.m.–4 p.m. except for Wednesday hours are 9–12. The office is closed Saturday and Sunday. The process normally takes about two hours.
I-94 records are available here.