Naturalization (Form N-400)

Most green card holders can apply after five years, or three years if married to a U.S. citizen. The application asks about your residence, travel, employment, and history, and prepares you for the interview and the civics test.

Your free eligibility check confirms the timing and lists every document the application asks for.

What you will usually need

• Your green card
• Travel history for the qualifying period
• Addresses and employers for the qualifying period
• Marriage and, if any, divorce records

The exact list for your case comes from the free eligibility check.