Becoming a U.S. citizen through naturalization requires meeting 8 specific requirements set by USCIS. Missing even one can result in a denial or, for applicants with certain criminal history, referral to removal proceedings. The checklist below covers each requirement and what it means for your Form N-400 application. Some applicants may qualify for exceptions to the English and civics test. If you have past criminal history, read about criminal acts and citizenship eligibility. Contact our office to review your eligibility before you file.

The applicant must be age 18 or older at the time of filing for naturalization.

The applicant must be a lawful permanent resident for at least 5 years (3 years if married to a U.S. citizen) before filing.

USCIS verifies that your green card was lawfully obtained, not just that you possess one. If your permanent resident status was obtained through fraud, mistake, or a procedure not in compliance with the INA, you are ineligible for naturalization regardless of how long you have held the card.

5 years of continuous U.S. residence as an LPR immediately before filing (3 years for spouses of U.S. citizens).

Holding a green card for the required period is not enough. You must demonstrate that you actually maintained your principal home in the U.S. Extended trips abroad can disrupt the clock:

• Under 6 months: Residence is not broken.
• 6 months to 1 year: Presumed to break continuity. Can be rebutted with evidence of U.S. employment, family ties, or retained residence.
• 1 year or more: Breaks continuity. You must wait 4 years and 1 day after returning before you can refile (2 years and 1 day under the 3-year rule).

If you plan to be abroad for more than a year, obtain a Reentry Permit before you leave to protect your permanent resident status.

At least 30 months of actual physical presence in the U.S. during the 5-year period before filing (18 months under the 3-year spousal rule).

Unlike continuous residence, physical presence counts only the days you were actually inside the U.S. Frequent international travel can put you below the threshold even if you technically maintained U.S. residence. USCIS reviews passport stamps, travel records, and other documentation to verify this requirement.

The applicant must have lived within the USCIS district where they file for at least 3 months before filing.

Your N-400 must be filed with the USCIS office that has jurisdiction over your home address. If you move after filing, you must report the address change so your case is transferred to the correct district.

The applicant must demonstrate good moral character for 5 years prior to filing for naturalization, and during the period leading up to the administration of the Oath of Allegiance.

An applicant for naturalization must show that he or she has been, and continues to be, a person of good moral character. In general, the applicant must show good moral character during the 5-year period immediately preceding his or her application for naturalization and up to the time of the Oath of Allegiance. Conduct prior to the 5-year period may also impact whether the applicant meets the requirement.

While USCIS determines whether an applicant has met the good moral character requirement on a case-by-case basis, certain types of criminal conduct automatically preclude applicants from establishing good moral character and may make the applicant subject to removal proceedings. For more information about immigration consequences of criminal acts, please read here.

The applicant must support the principles of the U.S. Constitution and be willing to take the Oath of Allegiance.

At the naturalization ceremony, applicants take the Oath of Allegiance, formally renouncing foreign allegiances, pledging loyalty to the U.S. Constitution and its laws, and accepting all duties of citizenship including military and civil service when required. This must be done freely and without reservation.

The applicant must demonstrate English language proficiency (reading, writing, and speaking) and pass a civics test on U.S. history and government.

Both tests are administered at the USCIS naturalization interview. Applicants who fail any portion receive one re-examination, scheduled 60 to 90 days later, covering only the failed sections. A second failure results in denial of the application.

Some applicants qualify for a full or partial exception based on age, years of permanent residence, or a medical disability. See exceptions to the English and civics test for details.

FAQ

Frequently Asked Questions About Naturalization Requirements

Common questions about eligibility for U.S. citizenship through naturalization.

Q

What are the basic requirements to qualify for US citizenship through naturalization?

You must be at least 18, a lawful permanent resident for at least 5 years (3 years if married to a US citizen), have continuous US residence, be physically present for at least 30 months of the past 5 years, demonstrate good moral character, and pass the English and civics tests.

Q

Does long travel outside the US affect my naturalization eligibility?

An absence of more than 6 months can break continuous residence. An absence of 1 year or more automatically breaks it. If you plan to be outside the US for over a year, apply for a reentry permit in advance.

Q

What does good moral character mean for naturalization purposes?

USCIS evaluates your conduct during the 5-year period before filing. Certain criminal convictions, particularly aggravated felonies, permanently bar citizenship. An attorney can review your record before you file.

Q

Can I apply for naturalization before I reach my 5-year anniversary as a permanent resident?

Yes. You may file up to 90 days before you would first satisfy the 5-year continuous residence requirement.

Q

What is the difference between continuous residence and physical presence?

Continuous residence means you maintained your principal home in the US. Physical presence is the total time you were actually in the US (at least 30 months required out of 60). Both requirements must be met independently.