Become a U.S. Citizen Through Naturalization

Naturalization is the process to become a U.S. citizen if you were born outside of the United States. If you meet certain requirements, you may become a U.S. citizen either at birth or after birth. Check your eligibility.


To apply for naturalization to become a U.S. citizen, you must:

Be at least 18 years of age at the time you file the application;
Have been a lawful permanent resident for the past three or five years (depending on which naturalization category you are applying under);
Have continuous residence and physical presence in the United States;
Be able to read, write, and speak basic English;
Demonstrate good moral character;
Demonstrate a knowledge and understanding of U.S. history and government;
Demonstrate a loyalty to the principles of the U.S. Constitution; and
Be willing to take the Oath of Allegiance.