回複：請問-family-based I-485 寄到哪？如果在Chicago Lockbox， 如

U.S. Citizenship and Immigration Services
P.O. Box 805887
Chicago, IL 60680-4120

Or, for non-United States Postal Service (USPS) deliveries (e.g. private couriers)

U.S. Citizenship and Immigration Services
Attn: FBASI
427 S. LaSalle – 3rd Floor
Chicago, IL 60605-1098

here is the website :http://uscis.gov/graphics/formsfee/forms/i-485.htm


after you file you petition, you will have i-797c and they will tell you your receipt #. Use that to check on the uscis.gov, most time you can see the date they update your case, but sometimes don't.

Good luck :)