Learn About U.S. Citizenship Filing Steps and Requirements

Understanding U.S. Citizenship: What It Means and Why It Matters

U.S. citizenship is a legal status that grants a person certain rights and responsibilities within the United States. According to the U.S. Department of Homeland Security, as of 2023, approximately 640 million people hold U.S. citizenship. Citizenship provides access to voting rights, the ability to hold a federal job, eligibility for certain government programs, and protection under U.S. law both domestically and abroad.

Get Your Free Louisville Homeless Services Resource Guide →

There are several ways to become a U.S. citizen. The most common pathway is through naturalization, which is a formal process that allows lawful permanent residents to become citizens. Other individuals may acquire citizenship at birth if they are born in the United States or born to at least one U.S. citizen parent, even if born outside the country. Understanding which pathway applies to your situation is an important first step in learning about citizenship.

Citizenship differs from a "green card" or lawful permanent resident status. While a green card allows someone to live and work permanently in the U.S., citizenship provides additional protections and benefits. For example, citizens cannot be deported, can travel with a U.S. passport, and have the right to vote in federal elections. However, citizenship also comes with obligations, including paying taxes and potentially serving on a jury or in the military if drafted.

The naturalization process involves several steps, including filing paperwork with U.S. Citizenship and Immigration Services (USCIS), attending an interview, passing an English test, and demonstrating knowledge of U.S. history and civics. This guide walks through each of these steps so you understand what to expect.

Practical Takeaway: Before pursuing citizenship, learn which pathway applies to you—whether that's naturalization, birth citizenship, or another route. This determines what steps you'll need to take next.

Basic Requirements for Naturalization Through USCIS

Not every person can become a U.S. citizen through naturalization. USCIS, the federal agency that handles citizenship matters, has established specific requirements that must be met. Understanding these requirements helps you determine whether naturalization may be a path available to you.

Learn How DMV Appointment Schedulers Work →

One of the primary requirements is that you must be a lawful permanent resident (green card holder) for a certain length of time. For most people, this period is five years. However, if you are married to a U.S. citizen, the requirement is reduced to three years. Some military members and their spouses may have different timeframes. This waiting period exists so that USCIS can verify your background and ensure you have maintained your permanent resident status continuously.

You must also demonstrate physical presence in the United States during your residency period. Generally, you need to have been physically present in the U.S. for at least half of the required period. For example, if you need five years of permanent residency, you should have been in the country for at least 2.5 years. Additionally, during the six months immediately before filing your naturalization paperwork, you should have been physically present in the United States.

Other core requirements include the following:

• Being at least 18 years old at the time you file
• Demonstrating good moral character (this means no serious criminal convictions and meeting other conduct standards)
• Taking an oath of allegiance to the United States
• Showing an ability to read, write, and speak English at a basic level
• Passing a civics test covering U.S. history and government
• Not being under a final removal order or deportation proceeding

Certain criminal convictions can prevent someone from becoming a citizen. These include crimes of moral turpitude (such as theft or fraud), drug-related offenses, or crimes of violence. If you have a criminal history, it's important to understand how it may affect your case before proceeding.

Practical Takeaway: Verify you meet the basic requirements—green card status, residency time, physical presence, age, and moral character—before beginning the filing process. If you have questions about your specific situation, consult with a qualified immigration attorney.

Filing Form N-400 and Gathering Required Documents

The official way to start the citizenship process is by filing Form N-400, Application for Naturalization, with USCIS. This form is the central document that contains your biographical information, immigration history, and answers to questions about your background. USCIS uses this information to evaluate whether you meet the requirements for citizenship.

Learn About Quarterly Estimated Tax Payments →

Form N-400 asks for detailed information about your personal history, including where you have lived, your employment, your family members, and your trips outside the United States. You must be truthful and complete on every part of this form. Any false statements can result in denial of your application and may have serious legal consequences, including potential fraud charges.

When filling out the form, you will need to provide specific details such as your Alien Number (found on your green card), your Social Security Number, dates of travel outside the U.S., and information about your family. The form has multiple parts, and each section requires careful attention. USCIS provides detailed instructions with the form, and there are many free resources available online that explain how to complete it correctly.

Alongside Form N-400, you must gather and include several supporting documents:

• A copy of your green card (both front and back)
• Your state-issued identification or passport
• Birth certificate (if available)
• Marriage certificate (if applicable)
• Divorce decrees (if you have been divorced)
• Tax returns or evidence of income from the past five years
• Police clearance certificates from any country where you have lived for more than six months
• Medical examination results (Form I-693, completed by a USCIS-approved doctor)
• Vaccination records
• Evidence of English ability (or a waiver if you qualify for an exception)

You can submit your N-400 by mail or, in some locations, through USCIS online filing. The filing fee for Form N-400 is currently $640, with an additional $85 for biometric services (fingerprinting), though fee waivers may be available for those who cannot pay. Once USCIS receives your application, they will send you a receipt notice with a case number.

Practical Takeaway: Start gathering your documents well in advance of filing. Missing or incomplete documents can delay your case or result in a request for additional information. Keep copies of everything you submit.

Biometrics Appointment and Background Investigation Process

After USCIS receives your Form N-400, you will be scheduled for a biometrics appointment. During this appointment, USCIS will collect your fingerprints and take a photograph. These biometrics are used to conduct a thorough background check, which is a standard part of the citizenship process. According to USCIS data, most biometrics appointments are scheduled within two to three months of submitting your application, though this varies by location and current processing times.

Learn How OneDrive Background Sync Works →

When you receive your notice for the biometrics appointment, it will include the date, time, and location where you need to go. It's important to arrive on time and bring the notice with you, along with a valid photo ID. The appointment itself is quick—typically lasting 15 to 30 minutes. USCIS staff will scan your fingerprints using digital technology and take a digital photo. You will not be required to answer questions at this appointment; it is purely a data collection process.

During the background investigation that follows, USCIS conducts multiple checks, including criminal background reviews, security screening, and verification of your immigration history. They contact employers, landlords, and other references to verify information you provided on your Form N-400. They also check databases maintained by the FBI, Department of State, and other agencies to ensure you have no disqualifying criminal history or security concerns.

This background investigation process typically takes several months. USCIS publishes processing time data for different types of cases by location. For example, processing times for naturalization cases in major cities have ranged from 7 to 16 months in recent years, according to