N-400 Naturalization Application – Required Information Checklist

This checklist is for form preparation purposes only. CoreLink Immigration Form Services prepares your USCIS form based solely on the information you provide.

Information Required for Form Completion

• Full Legal Name – as shown on legal documents
• Other Names Used – aliases, maiden names, or nicknames if applicable
• Date and Place of Birth – city, state/province, and country
• Alien Registration Number (A-Number) if applicable
• USCIS Online Account Number if applicable
• Social Security Number if applicable
• Current Mailing Address
• Current Physical Address if different from mailing address
• Address History for the past 5 years
• Employment and School History for the past 5 years
• Travel History Outside the United States for the past 5 years
• Marital Status and Spouse Information if applicable
• Previous Marriage Information if applicable
• Children Information if applicable
• Basic Biographic Information – height, weight, eye color, and hair color
• Interpreter or Preparer Information if someone assisted with completion
• Confirmation of Information Accuracy

Background and Eligibility Questions

Form N-400 includes background and eligibility questions required by USCIS. To complete this section, please provide accurate factual responses to any questions that apply to your situation.

• Travel and residence history
• Marital and family information
• Tax filing information if requested by the form
• Selective Service information if applicable
• Military service information if applicable
• Responses to USCIS background and eligibility questions

CoreLink Immigration Form Services records and organizes information based solely on the information you provide. We do not determine eligibility, provide legal advice, or provide legal interpretation of immigration requirements.

Optional Uploads (Reference Only)

• Driver’s License or State ID for factual identification reference only
• Social Security Card for SSN verification only
• Permanent Resident Card for factual green card information only
• Passport biographic page for factual travel information only

Do Not Upload

• Original passports or original identity documents
• Documents not necessary for form preparation
• USCIS filing fee receipts
• Evidence USCIS requires you to submit separately

Online Filing Notes (If Applicable)

• Some applicants may be able to file Form N-400 online through a USCIS account.
• Your form will be prepared based on the filing method selected during checkout.
• CoreLink Immigration Form Services does not determine online filing eligibility.
• You are responsible for confirming USCIS filing requirements before submission.

Ready to securely submit your N-400 information?

Upload N-400 Information

Once submitted, your information will be organized and your form will be prepared based solely on the information you provide.