Overview
The Form N-600 (Application for Certificate of Citizenship) is used by eligible individuals who already acquired or derived U.S. citizenship (for example through a parent), and want official proof in the form of a Certificate of Citizenship.
Who this service is for
This may apply if you:
- Believe you became a U.S. citizen automatically through a U.S. citizen parent, and
- Need formal evidence of citizenship status through USCIS, and
- Can provide documents proving eligibility under citizenship rules
What your application must show
A strong N-600 case typically demonstrates:
- Parent’s U.S. citizenship status (where applicable)
- Parent–child relationship evidence
- Legal custody/physical presence details (if required for your situation)
- A clear timeline showing how citizenship was acquired/derived
Typical supporting documents
- Applicant’s birth certificate and identity documents
- Parent(s) citizenship evidence
- Parents’ marriage/divorce records (if applicable)
- Evidence of custody/legal status (if relevant)
- Proof of residence/physical presence and family timeline documents (as applicable)
How we support you
We help build a clear eligibility timeline, organise documents in the correct order, and prepare a complete submission file that supports the citizenship claim.