U.S. CitizenshipThe country in which a person is born (and has not renounced or lost citizenship) or naturalized and to which that person owes allegiance and by which he or she is entitled to be protected. and Immigration Services (USCIS) announced that it is revising the Direct Mail Program for the Application for NaturalizationThe conferring, by any means, of citizenship upon a person after birth. (Form N-400).   The notice of this addition is effective on Jan. 22, 2009.   The notice advises the public to file non-military N-400s with the appropriate Lockbox facilities and provides a 30-day transition period after the effective date for USCIS service centersFour offices established to handle the filing, data entry, and adjudication of certain applications for immigration services and benefits. The applications are mailed to INSA branch of the Department of Justice that formerly existed and had responsibility for immigration and naturalizationThe conferring, by any means, of citizenship upon a person after birth.. INS has been renamed and became part of Department of Homeland Security (DHSThe mission of the Department of Homeland Security -The many men and women who daily protect our borders and secure our country are committed to the safety of our homeland. DHS is now responsible for immigration and naturalizationThe conferring, by any means, of citizenship upon a person after birth.. Visit the DHS web site for more information.) on March 1, 2003. We link to the Department of Homeland Security (DHSThe mission of the Department of Homeland Security -The many men and women who daily protect our borders and secure our country are committed to the safety of our homeland. DHS is now responsible for immigration and naturalizationThe conferring, by any means, of citizenship upon a person after birth.. Visit the DHS web site for more information.) Internet site. We also link to the U.S. Citizenship and Immigration Services (USCIS) in the DHSThe mission of the Department of Homeland Security -The many men and women who daily protect our borders and secure our country are committed to the safety of our homeland. DHS is now responsible for immigration and naturalizationThe conferring, by any means, of citizenship upon a person after birth.. Visit the DHS web site for more information.. Service Centers -- Service Centers are not staffed to receive walk-in applications or questions. to forward N-400 applications received at their facilities to the appropriate Lockbox location. 

Applicants should continue to file military N-400 cases with the Nebraska Service Center (NSC).   In order to assist military spouses, NSC will also accept and process N-400s filed by spouses of military members. 

Effective Jan. 22, 2009, applicants must submit Form N-400 and related supplements to one of two new USCIS Lockbox facilities for initial processing, using the following addresses:

If You Reside In:   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 Northern Mariana Islands, file your N-400 with: 

USCIS Lockbox FacilityA site that is built or established to perform a specific function or serve a particular need. For example, the Department of State built the Kentucky Consular Center to manage the diversityA category of immigrants replacing the earlier categories for nationals of underrepresented countries and countries adversely “affected” by the Immigration and Nationality Act Amendments of 1965 (P.L. 89-236). The annual limit on diversity immigration was 40,000 during fiscal years 1992-94, under a transitional diversity program, and 55,000 beginning in fiscal year 1995, under a permanent diversity program. visa program.
U.S. CitizenshipThe country in which a person is born (and has not renounced or lost citizenship) or naturalized and to which that person owes allegiance and by which he or she is entitled to be protected. and Immigration Services
P.O. Box 21251
Phoenix, AZ 85034

Courier and Express Mail Deliveries
USCIS, Attn: N-400
1820 E. Skyharbor Circle S. Floor 1
Phoenix, AZ 85034

If You Reside In: Alabama, Arkansas, Connecticut, Delaware, DistrictGeographic areas into which the United States and its territories are divided for the Immigration and NaturalizationThe conferring, by any means, of citizenship upon a person after birth. Service’s field operations or one of three overseas offices located in Rome, Bangkok, and Mexico City. Each District Office, headed by a District Director, has a specified service area that may include part of a state, an entire state, or many states. District Offices are where most USCIS field staff are located. District Offices are responsible for providing certain immigration services and benefits to people resident in their service area, and for enforcing immigration laws in that jurisdiction. Certain applications are filed directly with District Offices, many kinds of interviews are conducted at these Offices, and USCIS staff is available to answer questions, provide forms, etc. of Columbia, 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, or U.S. Virgin Islands, file your N-400 with:

USCIS Lockbox FacilityA site that is built or established to perform a specific function or serve a particular need. For example, the Department of State built the Kentucky Consular Center to manage the diversityA category of immigrants replacing the earlier categories for nationals of underrepresented countries and countries adversely “affected” by the Immigration and Nationality Act Amendments of 1965 (P.L. 89-236). The annual limit on diversity immigration was 40,000 during fiscal years 1992-94, under a transitional diversity program, and 55,000 beginning in fiscal year 1995, under a permanent diversity program. visa program.
U.S. CitizenshipThe country in which a person is born (and has not renounced or lost citizenship) or naturalized and to which that person owes allegiance and by which he or she is entitled to be protected. and Immigration Services
P.O. Box 299026
Lewisville, TX 75029

Courier and Express Mail Deliveries
USCIS, Attn: N-400
2501 S. State Hwy 121, Bldg. 4
Lewisville, TX 75067

USCIS will update the N-400 form instructions to reflect the new filing procedures.