网上查的邮寄地址是在Phoenix, AZ。
If you live in: File your application at the:
Alaska, Arizona, California, Colorado, Hawaii, Idaho, Illinois, Indiana,
Iowa, Kansas, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada,
North Dakota, Ohio, Oregon, South Dakota, Utah, Washington, Wisconsin,
Wyoming, Guam or the Commonwealth of the Northern Mariana Islands
USCIS Phoenix Lockbox
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