Application for Naturalization

Purpose of Form :

To apply for U.S. citizenship.

Number of Pages :

Form 10; Instructions 7.

Edition Date :

04/05/2010. 01/22/09, 10/15/07, 07/30/07, 11/01/06, 05/31/01 can be used. No other editions accepted.

Where to File :

1.  All Applicants (with the exception of current or former members of the military, spouses of current members of the military, and close relatives of deceased members of the military. See "2." below.)

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 the Commonwealth of the Northern Mariana Islands, send your application to the USCIS Phoenix Lockbox Facility at the following address:

          USCIS
          P.O. Box 21251
          Phoenix, AZ 85036

For Express Mail or courier deliveries, use the following address:

          USCIS
          Attn:  N-400
          1820 E. Skyharbor Circle S
          Suite 100
          Phoenix, AZ 85034

If you reside in 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, Tennessee, Texas, Vermont, Virginia, West Virginia, Commonwealth of Puerto Rico, or the U.S. Virgin Islands, send your application to the USCIS Dallas Lockbox Facility at the following address:

          USCIS
          P.O. 660060
          Dallas, TX 75266

For Express Mail or courier deliveries, use the following address:

          USCIS
          Attn: N-400
          2501 S State Hwy 121
          Business
          Suite 400
          Lewisville, TX 75067

2.  Applications from Current or Former Members of the Military, Spouses of Current Members of the Military, and Close Relatives of Deceased Members of the Military

All naturalization applications filed under the military provisions, sections 328 or 329 of the INA, must send your application to the Nebraska Service Center (NSC) regardless of where you live and whether you are filing from within the United States or abroad.  If you are the spouse of a current member of the military, or are the close relative of a deceased family member (319(d)), send your application for naturalization to the NSC regardless of where you live and whether you are filing from the within the United States or abroad.  Send your application to:

          Nebraska Service Center
          P.O. Box 87426
          Lincoln, NE 68501-7426

For Express Mail or courier deliveries, use the following address:

          Nebraska Service Center
          850 S. Street
          Lincoln, NE 68508

Filing Fee :

$675 ($595 plus a biometrics fee of $80). Applicants 75 years of age or older are not charged a biometric fee; their fee total is $595. No fee is required for military applicants filing under Section 328 and 329 of the INA.

Special Instructions :

Please note: A Guide to Naturalization (Form M-476) provides important information about citizenship eligibility requirements and processing procedures. The Form N-400 application instructions often refer to information in the Guide. Therefore you should read the Guide carefully before filing this form. You may view and print the Guide from the Related Link on this page.

This version of the N-400, Application for Naturalization, is available below in two files - the instructions and the form itself.

We recommend that you download the form directly to your local computer, rather than fill it out through your web browser. Using a Windows PC, "right-click" on the link to the fillable form and select "Save Link As" (in Netscape) or "Save Target As" (in Internet Explorer) and work from the copy you save to your hard drive. 

Note on Filing Fee:

Fees are accepted in the form of money order, personal check or cashiers check only. Checks should be made payable to Department of Homeland Security or U.S. Citizenship and Immigration Services.

This page can be found at http://www.uscis.gov/n-400

• Download N-400 (614KB PDF)
• Download N-400 Instructions (242KB PDF)
• Download Document Checklist and Eligibility Worksheet (NaNKB PDF)