N-600K, Application for Citizenship and Issuance of Certificate Under Section 322

You may file your Form N-600K online or by mail (paper).

Filing your Form N-600K online

If you are applying from outside the U.S., are applying for a fee waiver, or are a member or veteran of any branch of the U.S. military filing on your own behalf, you cannot currently file your Form N-600K online. Please see the section below for instructions on how to file your form by mail.

You must create an online account. Having an online account, will also allow you to:

• Pay your filing fee;
• Submit passport-style photos;
• Check the status of your case;
• Receive notifications and case updates;
• Respond to requests for evidence; and
• Manage your contact information, including updating your address.

(Attorneys and accredited representatives can also create an online account, which will allow them to manage their clients’ applications in one place.)

Filing your Form N-600K by mail

Mail your form to the Phoenix Lockbox. We encourage you to read our filing tips before mailing your form.

U.S. Postal Service (USPS):

USCIS
Attn: NATZ
P.O. Box 20100
Phoenix, AZ 85036-0100

FedEx, UPS, and DHL deliveries:

USCIS
Attn: NATZ (Box 20100)
1820 E. Skyharbor Circle S
Suite 100
Phoenix, AZ 85034-4850

Filing Tips for Form N-600K, Application for Citizenship and Issuance of Certificate Under Section 322

• Complete all sections of the form. We will reject the form if these fields are missing:
  • Part 1 – Information About the Child’s Eligibility
  • Check only ONE box in Part 1. If you check multiple boxes in Part 1, we will reject your Form N-600K and return it to you for correction and re-filing.
  • Your signature as the applicant.

Don’t forget to sign your form. We will reject any unsigned form.

Please do not submit this checklist with your Form N-600K. It is an optional tool to use as you prepare your form, but does not replace statutory, regulatory, and form instruction requirements. We recommend that you review these requirements before completing and submitting your form. Do not send original documents unless specifically requested in the form instructions or applicable regulations.

If you submit any documents (copies or original documents, if requested) in a foreign language, you must include a full English translation along with a certification from the translator verifying that the translation is complete and accurate, and that they are competent to translate from the foreign language to English.

Did you provide the following required documents?

• Two passport-style photographs of the child
• The child’s birth certificate or record
• The U.S. citizen parent’s birth certificate or record
• Proof of required physical presence in the United States for the U.S. citizen parent (or grandparent if parent does not meet the requirement) 
• Proof of U.S. citizenship for the qualifying parent (and grandparent if applicable)

If applicable, did you provide the following documents?

• The U.S. citizen parent’s marriage certificate(s) 
• Evidence the U.S. citizen parent terminated any prior marriage(s)
• Proof of legitimation for children born out of wedlock if applying based on U.S. citizenship of father 
• Evidence of legal guardianship 
• Proof of legal custody (only required for applicants whose parents divorced and/or legally separated and for applicants who are adopted)
• Proof of child residing in the physical custody of the U.S. citizen parent(s)
• Copy of your Form I-600 or Form I-800 approval notice and supporting documentation, (except home study) or evidence the U.S. citizen parent has complied with the two-year legal custody and joint residence requirement 
• Copy of the full, final adoption decree (if child is adopted)
• Evidence of all legal name changes 
• Explanation and secondary evidence if any requested document is unavailable

E-Notification: To receive an email or text message when we accept your form, complete Form G-1145, E-Notification of Application/Petition Acceptance, and clip it to the front of the form.

Attorney or representative: You may be represented, at no expense to the U.S. government, by an attorney or other duly authorized representative. Your representative must submit Form G-28, Notice of Entry or Appearance as Attorney or Representative, with your Form N-600K. Your representative may also submit Form G-28 at the time of your interview.