N-400 Naturalization
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Form N-400 is the official application used to apply for U.S. citizenship through naturalization.
It is filed with U.S. Citizenship and Immigration Services (USCIS) by eligible lawful permanent residents (green card holders) who want to become naturalized U.S. citizens.
Key Points:
Filing fee is $640 + $85 biometric services fee
Can be filed online or by mail
You’ll be scheduled for:
Biometrics appointment
Naturalization interview and test
Oath ceremony if approved
Everything you need to know about N-400 Naturalization
To be eligible, you typically must:
Be at least 18 years old
Be a lawful permanent resident (green card holder) for:
- 5 years, or
- 3 years if married to a U.S. citizen
Have continuous residence in the U.S.
Be physically present in the U.S. for at least half of that time
Demonstrate good moral character
Pass English and civics exams (with exceptions for age/disability)
Be willing to take the Oath of Allegiance
The form requires details about your:
Personal information and family
Immigration history
Employment and travel history
Marital status
Criminal background (if any)
Military service
Willingness to support the Constitution and take the oath