USCIS Announces Change of Filing Location for Form N-400

WASHINGTON—U.S. Citizenship and Immigration Services (USCIS) today announced revised

addresses for applicants filing an Application for Naturalization (Form N-400) at USCIS Lockbox

facilities in Phoenix and Dallas. This filing address change takes effect immediately.

Applicants who previously filed their applications at the Lewisville Post Office (P.O.) box will now file

their applications at a P.O. Box in Dallas. See address below. In addition, the table below includes a

change to the USCIS Phoenix Lockbox address. Starting immediately, applicants filing Form N-400 at

the USCIS Dallas or Phoenix Lockbox must submit the application and all supporting documents and fees

to the following addresses, based on where they live:

If you live in: Mail your application to 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, Territory of

Guam, or the Commonwealth of Northern Mariana


USCIS Phoenix Lockbox

U.S. Postal Service deliveries:


P.O. Box 21251

Phoenix, AZ 85036

Express Mail and Courier deliveries:


ATTN: N-400

1820 E. Skyharbor Circle S

Suite 100

Phoenix, AZ 85034

Alabama, Arkansas, Connecticut, Delaware,

District of Columbia, Florida, Georgia, Kentucky,

Louisiana, Maine, Maryland, Massachusetts,

Mississippi, New Hampshire, New Jersey, New

Mexico, New York, North Carolina, Oklahoma,

Pennsylvania, Rhode Island, South Carolina,

Tennesee, Texas, Vermont, Virginia, West

Virginia, Puerto Rico, or the U.S. Virgin Islands

USCIS Dallas Lockbox

U.S. Postal Service deliveries:


P.O. Box 660060

Dallas, TX 75266

Express Mail and Courier deliveries


ATTN: N-400

2501 S. State Hwy. 121 Business

Suite 400

Lewisville, TX 75067

AILA InfoNet Doc. No. 09121861. (Posted 12/18/09)

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The U.S. Postal Service will immediately forward mail from the Lewisville Post Office to the new post

office in Dallas until December 31, 2009. After that date, the Postal Service will forward the mail

through normal channels, which will likely delay receipt at the Dallas Lockbox facility.

Applicants filing a Form N-400 under military provisions (Section 328 or 329), should file their

application at the Nebraska Service Center, PO Box 87426, Lincoln, NE 68501-7426, regardless of where

the applicant lives. This includes current military spouses regardless of geographic location or


If you are filing a Form N-400 at USCIS Lockbox facilities, you may elect to receive an email and/or text

message notifying you that your application has been accepted. You must complete an E-Notification of

Application/Petition Acceptance (Form G-1145), and attach it to the first page of your application.

The N-400 form instructions have been updated to reflect the new filing locations.

For more information on USCIS programs, visit or call the National Customer Service

Center at 1-800-375-5283.