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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 we will accept your application. Learn how to clear your browser cache if you experience issues logging in with your NY.gov username and password. You can also certify for weekly benefits with our automated phone system by calling 833-324-0366 (for PUA) or 888-581-5812 (for UI).

If you cannot submit your application online: You can call us at 1-800-772-1213 (TTY 1-800-325-0778); or; Due to the COVID-19 pandemic, visits to our offices are by appointment only for certain services. Please visit our Coronavirus page to see if you may be eligible for an in-person appointment. Common App is a non-profit membership organization dedicated to access, equity and integrity in the college admission process. We support a centralized or 'common' online application system for more than 800 colleges and universities worldwide that enables more than 1 million students - a third of whom are first generation - to apply to college.

Free college-planning tools, provided by 150+ top schools, to help students learn about, prepare for and apply to college. Start early, stress less.

Important Updates to the Naturalization Test

USCIS has revised the civics portion of the naturalization test. All applicants for naturalization with a filing date(also known as a received date) on or after Dec. 1, 2020, will be required to take the 2020 version of the civics test. For more information, visit The 2020 Version of the Civics Test page. Applicants for naturalization with a filing date before Dec. 1, 2020, are required to take the 2008 version of the civics test.

Did you receive an email (PDF, 159.8 KB) from us about the benefits of creating an online account? Even if you’ve already filed a paper form by mail, you can still create an online account to enjoy easy access to alerts and status updates. For more information, visit our How to Create a USCIS Online Account page.

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

What This Form Can Help You Do

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Form Details

09/17/19. 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).

Filing your Form N-400 online

You must create a USCIS online account to file your Form N-400 online. Having an online account will also allow you to:

  • Pay your filing fee online;
  • 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: You can also create an online account, which will allow you to manage all of your clients’ applications in one place.

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

Military Members

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 spouse, parent or child of a deceased member of the military,you may file your Form N-400 online or by mail. If you choose to file by mail, send your application to 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

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 we will accept your application.

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

(Add the $85 biometric fee for a total of $725, where applicable. See exceptions below.) If you file your Form N-400 online, you may pay your fee online. If you file your Form N-400 by mail (paper), you may pay the fee with a money order, personal check, cashier’s check, or by 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.

When you send a payment, you agree to pay for a government service. Filing and biometric service fees are final and non-refundable, regardless of any action we take on your application, petition, or request, or if you withdraw your request. Use our Fee Calculator to help determine your fee.

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.
Checklist of Required Initial Evidence (for informational purposes only)

Please do not submit this checklist with your Form N-400. It is an optional tool to use as you prepare your form, but does not replace statutory, regulatory, and form instruction requirements. We recommend that you review these requirements before completing and submitting your form. Do not send original documents unless specifically requested in the form instructions or applicable regulations.

If you submit any documents (copies or original documents, if requested) in a foreign language, you must include a full English translation along with a certification from the translator verifying that the translation is complete and accurate, and that the translator is competent to translate from the foreign language to English.

Did you provide the following?

  • A copy of your Permanent Resident Card
  • A copy of your marriage certificate (if applicable)
  • Form N-426, Request for Certification of Military or Naval Service (if applying for naturalization based on military service)
  • DD Form 214, NGB Form 22, or discharge orders (if applying for naturalization based on military service and separated from service)
  • A copy of your official military orders (if applying for naturalization based on military service and currently serving)
  • Evidence of your citizen spouse’s employment abroad (if applying under 319(b))
  • Two passport-style photographs (if you reside outside the United States)
  • ReadA 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: Applicants who file Form N-400 and later appear at an 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, we may use the photograph taken at the ASC 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.
  • Lost or Expiring Permanent Resident Card: If you lost your Permanent Resident Card (commonly called a Green Card) or your card expired, you generally must still file Form I-90 even if you have applied for naturalization. However, if you properly file Form I-90 or you filed your Form N-400 at least six months before your Green Card expired, we may issue you an Alien Documentation, Identification and Telecommunications (ADIT) stamp as temporary proof of your lawful permanent resident status.

Biometrics for Service Members

We will review your application and conduct required security checks, which include obtaining your fingerprints. This can be done in one of the following ways:

  • If you were fingerprinted for a previous immigration application, we will use these fingerprints, if available.
  • If stationed outside the United States, you may submit two properly completed FD-258 fingerprint cards and two passport-style photos taken by the military police or officials with the Department of Homeland Security, U.S. embassy, or U.S. consulate.

We allow you to submit your fingerprints at an application support center before you file your Form N-400. Be sure to include your A-Number and show your unexpired military ID card or Delayed Entry Program ID card.

If you have case specific questions, you can contact the Military Help Line at 877-CIS-4MIL (877-247-4645, TTY: 800-877-8339) or militaryinfo@uscis.dhs.gov.

Learn About Citizenship

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Filing Tips and Guidance

Policy and Guidance

Ways to Apply

You can complete an application for Retirement, Spouse's, Medicare or Disability Benefits online.

If you cannot submit your application online:

  • You can call us at 1-800-772-1213 (TTY 1-800-325-0778); or
  • Due to the COVID-19 pandemic, visits to our offices are by appointment only for certain services. Please visit our Coronavirus page to see if you may be eligible for an in-person appointment.

If you live outside the U.S. you can contact the Federal Benefits Unit that provides service to your country of residence.

Retirement or Spouse's Benefits

You can apply online for Retirement or spouse's benefits or continue an application you already started.

You must be at least 61 years and 9 months old and want your benefits to start no more than four months in the future.

If you qualify for both retirement and spouse's benefits, please read:

If you are almost 65, your application for benefits will include Medicare.

Information You May Need to Apply:

Disability Benefits

You can apply online for disability benefits or continue an application you already started.

Information You May Need to Apply:

Appeal a Disability Decision

If your application for disability benefits was denied recently for medical reasons, you can request an appeal online or continue working on an appeal you already started.

Medicare Benefits

You can apply online for Medicare or continue an application you already started.

If you are almost 65 but you don't want your retirement benefits to start, you can just apply online for Medicare using the 'Retirement/Medicare Benefits' application.

Information You May Need to Apply:

Extra Help with Medicare Prescription Drug Costs

You can apply online for Extra Help with Medicare prescription drug costs.

Supplemental Security Income (SSI) Benefits

Application page transition

If you want to apply for Supplemental Security Income (SSI), please read:

Survivors Benefits

You cannot report a death or apply for survivors' benefits online.

If you need to report a death or apply for survivors' benefits, call 1-800-772-1213 (TTY 1-800-325-0778). You can speak to a Social Security representative between 7 AM and 7 PM Monday through Friday. You can also contact your local Social Security office.

In most cases, the funeral home will report the person's death to Social Security. If you want them to do that, you will need to give the deceased's Social Security Number to the funeral director so they can make the report.
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If you are getting benefits on your spouse's or parent's record:

  • We'll automatically change any monthly benefits to survivor benefits after the death is reported to us.
  • We may be able to pay the Special Lump Sum Death Benefit automatically.

If you are getting retirement or disability benefits on your own record, you will need to apply for the survivor benefits. We will check to see whether you can get a higher benefit as a widow or widower.

If you are not getting benefits, you should apply for survivor benefits promptly because, in some cases, benefits may not be retroactive.

Information You May Need to Apply:

  • Parent's Benefits
    (You must have been dependent on your child at the time of his or her death.)

Children's Benefits

You cannot apply online for benefits for a child. Please read:

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Check the Status of Your Application

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After you apply, you can check the status of your application online. You will need your Social Security number and confirmation that you received when you applied to use this service.