N-400 Application Complete Walkthrough: How to Fill It Out (2024)

Part 1: Personal Information

This section asks for your full name, date of birth, country of birth, current address.

Common mistake: Using different name spellings than what's on your Green Card. Match exactly.

Part 2: Immigration History

Document your Green Card issue date, biometric appointment dates, when you first entered US.

Part 3: Physical Presence

Calculate your days in USA for the past 5 years. USCIS will verify against travel records.

Part 4: Moral Character

This section asks about criminal history, arrests, traffic violations. Be honest. USCIS will run background checks.

Tips for Success

  • Type all answers (handwriting is hard to verify)
  • Use black ink if printing and signing
  • Keep a copy for your records
  • Include all supporting documents (birth certificate, Green Card, marriage certificate if applicable)