N-400, Application for Naturalization

File Your Form N-400 Online!

Purpose of Form

Use this form to apply for U.S. citizenship.

Number of Pages

Form 20; instructions 18.

Edition Date

12/23/16. No previous editions accepted. You can find the edition date at the bottom of the page on the form and instructions.

Where to File

You generally have two options for filing your Form N-400 with USCIS:

  • Online, or
  • By mail (paper).

1. Filing your Form N-400 online

If you are applying based on your military service, are applying from outside of the U.S., or are applying for a fee waiver or reduced fee, you cannot file your Form N-400 online. Please see section 2 or 3 below for how to file your form by mail.

Otherwise, you must create an online account in order to file your Form N-400 online. Having an online account will also allow you to:

  • Check the status of your case;
  • Receive notifications and case updates;
  • View personalized case completion date estimates;
  • Respond to requests for evidence; and
  • Manage your contact information, including updating your address.

Note for Attorneys and Accredited Representatives: If you are an attorney or accredited representative, you can also create an online account, which will allow you to manage all of your clients’ applications in one place.

2.  Filing your Form N-400 by mail

If you are applying based on being a current or former member of the military, a spouse of a current member of the military, or a close relative of a deceased member of the military, do not use this chart. Go to section 3 below to see where you must mail your form.

All other applicants must use the chart below.

If you submit Form N-400 on paper, you will receive a USCIS Account Acceptance Notice in the mail with instructions on how to create an online account to track and manage your case.  We will process your application even if you do not create an online account, but we encourage you to create and access your online account. We will continue to mail you copies of notifications about your case.

If you live in:

Mail your form to:

Alaska
Arizona
California
Colorado
Micronesia
Guam
Hawaii
Idaho
Kansas
Mariana Islands
Montana
North Dakota
Nebraska
Nevada
Oregon
Utah
Washington
Wyoming

For U.S. Postal Service (USPS):

USCIS
P.O. Box 21251
Phoenix, AZ 85036

For FedEx, UPS, and DHL deliveries:

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

If you live in:

Mail your form to:

Alabama
Arkansas
Connecticut
District. Of Columbia
Delaware
Florida
Georgia
Kentucky
Louisiana
Massachusetts
Maryland
Maine
Mississippi
North Carolina
New Hampshire
New Jersey
New Mexico
New York
Oklahoma
Puerto Rico
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Virginia
Virgin Islands
Vermont
West Virginia

For U.S. Postal Service (USPS):

USCIS
P.O. Box 660060
Dallas, TX 75266

For FedEx, UPS, and DHL deliveries:

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

If you live in:

Mail your form to:

Illinois
Indiana
Wisconsin
Iowa
Michigan
Minnesota
Ohio
Missouri
Pennsylvania

For U.S. Postal Service (USPS):

USCIS
P.O. Box 4380
Chicago, IL 60680-4380

For FedEx, UPS, and DHL deliveries:

USCIS
Attn: N-400
131 S. Dearborn, 3rd Floor
Chicago, IL 60603-5517

3.  If you are applying based on being a current or former member of the military, a spouse of a current member of the military, or a close relative of a deceased member of the military

File your application at the location listed below:

    For U.S. Postal Service (USPS):     

          USCIS
          P.O. Box 4446
          Chicago, IL 60680-4446

For FedEx, UPS, or DHL deliveries:

          USCIS
          Attn: Military N-400
          131 S. Dearborn, 3rd Floor
          Chicago, IL 60603-5517

Please note that if you submit Form N-400 on paper, you will receive a USCIS Account Acceptance Notice in the mail with instructions on how to create an online account to track and manage your case.  We will process your application even if you do not create an online account, but we encourage you to create and access your online account. We will continue to mail you copies of notifications about your case.

Filing Tips: Go to our Form Filing Tips page for information on how to help ensure that USCIS will accept your application.

Don’t forget to sign your form! We will reject any unsigned form.

Filing Fee

$640. (Add the $85 biometric fee for a total of $725, where applicable. See exceptions below.) You may pay the fee with a money order, personal check, cashier’s check, or credit card using Form G-1450, Authorization for Credit Card Transactions. If you pay by check, you must make your check payable to the U.S. Department of Homeland Security.

Exceptions:

  • Applicants 75 years of age or older do not need to pay a biometric fee. They only need to pay the $640 filing fee.
  • No fee is required for military applicants filing under section 328 or 329 of the INA.

Special Instructions

 

  • Read A Guide to Naturalization (Form M-476) carefully before filing this form. The Form N-400 instructions often refer to information in the guide, and it provides important information about citizenship eligibility requirements and processing procedures.
  • Biometrics: Individuals who file Form N-400 and later appear at the Application Support Center (ASC) for biometric capturing are required to submit to a photograph and signature process. If we determine you are eligible for naturalization, the photograph taken at the ASC may be digitally placed on your Certificate of Naturalization. Therefore, we recommend that on the day of your ASC appointment, you dress in clothing that is acceptable for display on your Certificate of Naturalization. We will not reject a photograph based solely upon your desire to modify the photograph shown on your certificate.
  • Photographs: Based on processing needs, you may need to submit physical passport photographs after you have already filed your Form N-400. We will send you a request for physical photographs with instructions on how to submit them.
  • Download the form: This version of the Form N-400 is available above in two files – the instructions and the form itself. We recommend that you download the form directly to your local computer instead of completing it on your web browser.
  • Attorney or representative: You may be represented, at no expense to the U.S. government, by an attorney or other duly authorized representative. Your representative must submit Form G-28, Notice of Entry or Appearance as Attorney or Representative, with your Form N-400.  Your representative may also submit Form G-28 at the time of your interview.

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

Last Reviewed/Updated: