Application for Certificate of Citizenship
Upload your blank Form N-600 from U.S. Citizenship and Immigration Services (USCIS), let AI auto-detect every field, type or dictate your data, and download the completed PDF in seconds. Your first clean download has no watermark, and there is nothing to install.
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JustFill is not affiliated with U.S. Citizenship and Immigration Services (USCIS). This is an independent third-party tool to help you complete Form N-600. Always download the current blank form from the official source and verify your completed copy before signing or submitting. Official Form N-600 from U.S. Citizenship and Immigration Services (USCIS)
USCIS Form N-600, Application for Certificate of Citizenship, is the federal form used to request a Certificate of Citizenship as proof of U.S. citizenship that was acquired or derived through a U.S. citizen parent. It is filed by people who are already U.S. citizens and want official documentation. JustFill fills the official N-600 PDF online for free.
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Form N-600 is the application used to obtain a Certificate of Citizenship, which is official proof that a person is already a U.S. citizen because citizenship was acquired at birth abroad to a U.S. citizen parent or derived automatically after birth, often through a parent's naturalization. It does not make someone a citizen; it documents citizenship that already exists. The 16-page form (edition 01/20/25) collects information about your eligibility, your own biographical and immigration details, your U.S. citizen parent or parents, any legal guardian, and, for certain claims, a parent's physical presence in the United States and military service. A U.S. citizen parent or legal guardian may file on behalf of a minor child. Obtaining the certificate is optional, since a U.S. passport is another way to prove citizenship. JustFill opens the official N-600 PDF in your browser: its AI detects each field so you can type or dictate answers, it works on scanned copies, and you do not need Adobe.
The official Form N-600 PDF and its instructions are free to download from the USCIS website at uscis.gov/n-600. JustFill opens that same official PDF in your browser so you can complete it without Adobe.
Get the official Form N-600 PDF from U.S. Citizenship and Immigration Services (USCIS)What each section of Form N-600 asks for. JustFill’s AI will detect these fields automatically when you upload the PDF — review the breakdown below so you know what to enter.
Whether you are applying for yourself or as a parent or guardian for a child, and your relationship to the U.S. citizen parent.
Your names, A-Number, biographical details, mailing and physical address, admission and immigration status, and any adoption details.
That parent's name, date of birth, country of birth, address, basis of U.S. citizenship, and marital history.
The same identifying, citizenship, and marital details for your other parent, if applicable.
The legal guardian's name, date of birth, and current physical address.
Dates a U.S. citizen parent was physically present in the United States and any U.S. Armed Forces service, for certain citizenship-at-birth claims.
Language and preparer statements, contact information, certification, and signature.
Interpreter and preparer contact and certification, extra space for answers in Part 11, the applicant's contact information, and the USCIS-only officer report.
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Your first download is free, with no watermark. After that: a watermark, or a $7 one-time pack (5 clean PDF downloads + 25 AI credits). AI detection covers up to 15 pages per run.
By uploading, you confirm you have the legal right to use this document.
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Official source: Form N-600 on U.S. Citizenship and Immigration Services (USCIS)’s website
JustFill is an independent product and is not affiliated with, endorsed by, or sponsored by U.S. Citizenship and Immigration Services (USCIS) or any government agency. Always verify your completed form on the official version before signing or submitting.