you need to check the i-765 instruction page 10: if you live in ....... ohio......... file your application at: For U.S. Postal Service (USPS) deliveries: USCIS PO Box 21281 Phoenix, AZ 85036 For Express mail and courier deliveries: USCIS Attn: AOS 1820 E. Skyharbor Circle S Suite 100 Phoenix, AZ 85034