Philadelphia Immigration Lawyer Blog

On September 15, 2008, the USCIS has announced that all N-400 applications for naturalization, starting on October 14, 2008, must be filed with one of two Lockboxes, listed below. N-400 applications must no longer be filed with any Service Center as they have been in the past.

The new procedure is effective immediately although if someone mistakenly sends their N-400 to a Service Center up until October 14, the Service Center will forward the application to the Lockbox address. Starting October 14, however, the N-400 must be send to the appropriate Lockbox.

The change only affects non-military N-400 applications--military N-400 cases should still be filed with the Nebraska Service Center.

Here are the two new USCIS Lockbox facilities for initial processing to use depending on your state of residence:

If You Reside In: File N-400 with:
Alabama, Arkansas, Connecticut, Delaware, DC, Florida, Georgia, Kentucky, Louisiana, Maine,
Maryland, Massachusetts, Mississippi, New Hampshire, New Jersey, New Mexico, New York,
North Carolina, Oklahoma, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, Tennessee, Texas, Vermont, Virginia, West Virginia, U.S. Virgin Islands.

USCIS Lockbox Facility, USCIS,
P.O. Box 299026
Lewisville, TX 75029.

I always send all applications for my clients via Federal Express and the private courier (non-USPS) address for these states is:

USCIS, Attn: N400
2501 S. State Hwy 121, Bldg. 4
Lewisville, TX 75067.

If You Reside In: File N-400 with:
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, Territory of Guam, Northern Mariana Islands

USCIS Lockbox Facility, USCIS,
P.O. Box 21251
Phoenix, AZ 85036

The private courier (non-USPS) address for these states is:
USCIS, Attn: N400
1820 E Skyharbor Circle
S. Floor 1, Phoenix, AZ 85036