N-600: Apply for a Certificate of Citizenship
TITLE: N-600: Apply for a Certificate of Citizenship
WHAT IT IS: Form N-600 is the application for a Certificate of Citizenship. This certificate is an official document that proves you are a U.S. citizen.
WHO NEEDS IT: You use this form if you need an official document to prove your U.S. citizenship. To find out if you are eligible for a Certificate of Citizenship, read the form instructions carefully.
HOW TO FILE:
1. Check the official instructions and gather all required documents.
2. Decide how you will file — online or by mail. You cannot file online if:
• you are applying from outside the United States,
• you are requesting a fee waiver, or
• you are a member or veteran of any U.S. military branch filing for yourself.
Everyone else may file online.
3. If you file online: Create a USCIS online account, complete the electronic form, pay the fee, and submit. You do not need to include photographs. If you live in the United States, USCIS will give you a photo appointment at a local support center.
4. If you file by mail: Print the form, complete it, and sign it.
• Photographs: If you live outside the United States, you must include two identical color passport‑style photos. If you live in the United States, you do not need to send photos.
• Mailing address: Use the correct Lockbox based on your state of residence.
- Phoenix Lockbox (for AK, American Samoa, AZ, Armed Forces Europe/Pacific, CA, CO, Commonwealth of the Northern Mariana Islands, Guam, HI, Marshall Islands, Micronesia, NV, NM, Palau, TX, UT, or outside the U.S.):
- USPS: USCIS Attn: NATZ, P.O. Box 20100, Phoenix, AZ 85036
- FedEx/UPS/DHL: USCIS Attn: NATZ (Box 20100), 2108 E. Elliot Rd., Tempe, AZ 85284-1806
- Elgin Lockbox (for all other states, DC, PR, U.S. Virgin Islands, and Armed Forces America):
- USPS: USCIS Attn: NATZ, P.O. Box 4088, Carol Stream, IL 60197-4088
- FedEx/UPS/DHL: USCIS Attn: NATZ (Box 4088), 2500 Westfield Drive, Elgin, IL 60124-7836
5. After you file, you can track your case. If you mailed a paper form, you will receive a notice with instructions to create an online account (creating an account is optional but helpful).
FEES: There is a filing fee. Check the official fee schedule on the USCIS website for the exact amount. If you cannot afford the fee, you may apply for a fee waiver — you must file by mail if you are requesting a fee waiver.
CURRENT EDITION & DEADLINES: The form edition date is 01/20/25. USCIS only accepts the current edition. Always download the form from the official website to be sure you have the correct version. (No specific filing deadline is stated.)
COMMON MISTAKES:
- Using an outdated version of the form or mixing pages from different editions (your application may be rejected).
- Forgetting to sign the form.
- Sending your package to the wrong Lockbox address — double‑check the address for your state.
- If you live outside the U.S., forgetting to include two passport‑style photos.
WHERE TO GET THE FORM: Always download the form and instructions from the official USCIS website at uscis.gov/n-600.
SOURCE: https://www.uscis.gov/n-600
DISCLAIMER: General info from USCIS, not legal advice — always verify on the official page and consult a licensed immigration attorney for your case. English is authoritative.