Form N-400 to Apply for Naturalization: Format, Filling and MORE

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In the United States, thanks to Form N-400 to Apply for Naturalization, citizens can aspire to become Americans.

If you are in this country and have the opportunity to convert, we recommend that you continue reading this article, so that you can take note.

Format of Form N-400 to Apply for Naturalization

The Form N-400 it is important for citizens who want to become naturalized American citizens. In addition, the United States Citizenship and Immigration Services (USCIS) provides citizens with free forms on its website.

If the citizen does not contain internet, he can contact the National Customer Service Center at 1-800-375-5283 and request that they send you the Form N-400 to Apply for Naturalization.

You can have the form in the following link, from the USCIS web portal, the document will be in PDF format.

Completion of Form N-400 to Apply for Naturalization

When you have the Form N-400 to Apply for NaturalizationYou must take into account that it must be filled in legibly and in black pen.

In the event that you need more space to fill out the document, you must attach an additional sheet of paper, which you must write by hand or type at the top of each sheet, in addition to adding your name, the number of your foreign registration A ( if you have it) and indicate the part number and the item of your answer.

It is important that the applicant answers the questions concisely and completely. If one of the questions does not apply, type or hand “N / A”.

If one of the questions requires a numerical answer, it is “Zero or none”.

Under no circumstances can you highlight, cross out and write outside the space assigned to you. If you need to make some corrections, it is recommended to start a new Form N-400 to Apply for Naturalization. If you do so, the USCIS will deny your application.

The Form N-400 To Apply for Naturalization, it contains 18 parts that you must complete.

Parts of Form N-400

Part 1 of the Form is about information about your eligibility. You must check each box that correspondsIf you check all of them, the process may be delayed.

Part 2

Part 2 will need to complete information about the applicant for naturalization. In addition, you will need to fill out 13 items from the same section.

In Items 1 and 2 you must enter your current legal name, said name is that it appears on your birth certificate and your name as it appears completely on your Permanent Resident Card (if applicable). In the event that you do not have said card, you must place “N / A”.

Items 3 and 4 should include other names that you have used since birth such as: aliases, nicknames, maiden name (if applicable) and name change (optional).

A name change is not necessary, due to a divorce, marriage or the death of your spouse.

On the 5th and 6th you must place your United States Social Security (if applicable), if you do not have one, indicate “N / A”. The 6 refers to the USCIS online account number (if applicable).

That is, if the citizen has previously submitted an application, they must provide the online account number that the system granted them.

In the following you must provide your gender, your date of birth, the exact date you became a Permanent Resident legally.

The country of birth, the country of citizenship or nationality, in the 12 you must answer Yes / No of a certain question and the 13 on the exemptions to the English test.

Part 3, 4 and 5

In section 3 of Form N-400 to Apply for Naturalization, to be completed by a person who has a disability and / or impairments

In the room you must complete the information to contact the applicant, put your current phone number, such as your current personal email address.

Part 5 is about the information about your residence, you must list all the places that you have lived during the last 5 years, even if it has been in other countries.

Part 6,7 and 8

In the section of Form N-400 to Apply for Naturalization, you must complete information about your parents. If your parents are not American, skip this part and go to part 7.

The seventh part, you must provide biographical information such as whether you are Hispanic or Latino, your race (white, Asian, African American, Native American, etc.), your height, weight, hair and eye color.

In section 8, put everything related to your job and the schools you attended.

Part 9, 10 and 11

In Part 9 of Form N-400 to Apply for Naturalization, you will need to provide information on how long you have been in the United States.

In 10 you should put the necessary information about your marital status history and in 11 provide information about your children.

Part 12, 13 and 14

In the section of Form N-400 to Apply for Naturalization, you will need to enter additional information about the applicant seeking naturalization.

In part 13 it is about the declaration, certification and signature of the applicant. The applicant must mark in a box if he / she read this application himself or if an interpreter helped him / her. If someone else helped you, you must check the box used by a preparer.

Part 14 is about the interpreter’s contact information, certification and signature, in which case the person was assisted by another person.

Part 15,16,17 and 18

In part 15 of Form N-400 to Apply for NaturalizationYou must provide contact information, statement and signature of the person who has filled out the application.

They should not complete sections 16, 17 and 18 until instructed to do so by a USCIS officer at the time of the interview.

The 16 is related to the signature of the moment in the interview, in the 17 is the resignation of foreign titles and 18 is the oath of allegiance.

It is recommended that you print or keep a copy of this form so that you have it for your records.

What is Form N-400 to Apply for Naturalization for?

This Form is for all citizens who wish to become naturalized American citizens.

In the event that your biological or adoptive parents are US citizens by birth or naturalized before you reached the age of 18, you may already be a US citizen.

Processing fees

The fee that applicants must pay to present the Form N-400 to Apply for Naturalization It is 640 US dollars. A fee of $ 85 is also required for the biometric service.

You can cancel the fee with checks or money orders that must be issued at a bank or other financial institution, located in the United States.

You should bear in mind that if you pay by check it must be made payable to US Department of Homeland Security , you must spell the name correctly.

To cancel with credit cards, you must fill out the Form G-1450 to cancel the Form N-40 fee.

Biometric Services Fee Exceptions

The citizen should not cancel this service if:

  • Have 75 years of age or older.
  • If you submit your application under the military provisions, according to the section 328 or 329 of the Immigration and Nationality Act (INA)

Where is it presented?

The citizen must first create an account online, in order to present your Form N-400. Having this account will allow you to:

  • Cancel the determined fee of the presentation.
  • Review your status of your case.
  • Receive notifications of your case.
  • You will be able to observe Custom estimates of case completion dates.
  • You can manage your contact information, including your address.

If you are submitting your application by mail, based on your status active member or former member of the Armed Forces, spouse of an active member, child or parent of a deceased member of the military, you will not need to use the given table. All other people must.


If the citizen resides in the following places such as: Alaska, Arizona, California, Colorado, North Dakota, Guam, Hawaii, Idaho, Northern Mariana Islands, Kansas, Micronesia, Montana, Nebraska, Nevada, Oregon, Utah, Washington and Wyoming .

You should send your request to in the case of postal service, USCIS, PO Box 21251, Phoenix, AZ 85036. If you want to make it through FedEX, UPS and DHL should be sent to: USCIS, Attn: N-400, 1820, Phoenix, AZ 85034.

Instead, it does reside in the following places: Arkansas, North and South Carolina, Connecticut, South Dakota, Alabama, Delaware, District of Columbia, Florida, Georgia, United States Virgin Islands, Kentucky, Louisiana, Miane, Maryland, Massachusetts, Mississippi, New Hampshire, New Jersey, New Mexico, New York, Oklahoma, Puerto Rico, Rhode Island, Tennessee, Texas, Vermont, Virginia, and West Virginia.

They should send their application to USCIS, PO Box 660060, Dallas, TX 75266. Instead for deliveries in FedEX, UPS and DHL is by USCIS, Attn: N-400, 2501 S State Hwy 121 Business, Suite 400, Lewisville, TX 75067.

If you live in Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, Pennsylvania and Wisconsin you must send your form to USCIS, PO Box 4380, Chicago, IL 60680-4380 or you can do it through FedEX, UPS AND DHL to USCIS, Attn: N-400, 131 S. Dearborn, 3rd Floor Chicago, IL 60603-5517.


The military must send their Form N-400 to Apply for Naturalization to the following options:

  • You should send the United States Postal Service to USCIS, PO Box 446, Chicago, IL 60680-4446.
  • If it is for companies such as FedEX, UPS or DHL, you must use the following address: USCI, Attn: Military N-400, 131 S. Dearborn, 3rd Floor, Chicago, IL 60603-5517-.

What is Form N-400 to Apply for Naturalization?

Form N-400 to Apply for Naturalization, is a vital and important document for people who want to become naturalized American citizens.

It is important to note that one of the requirements for naturalization is that the citizen must take an exam which shows that he knows how to read, write and speak basic English, as well as that he has knowledge of history and the United States government.

Finally, each form that supplies the USCIS They are common, so do your paperwork to obtain naturalization.

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