USCIS Form N-600K: Application for Citizenship and Issuance of Certificate Under Section 322

Edition date

01/20/25. You can find the edition date at the bottom of the page on the form and instructions.

Where to file

You may file your Form N-600K online or by mail (paper). If you are requesting a fee waiver, please submit a paper version of Form N-600K by mail.

We currently do not process fee waivers online. Filing your Form N-600K online 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 or Elgin lockbox. If you are filing from:Then, mail your form to:Outside of the U.S.

USCIS Phoenix Lockbox 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) 2108 E. Elliot Rd.

Tempe, AZ 85284-1806 Inside the U.S. USCIS Elgin Lockbox U.S.

Postal Service (USPS): USCIS Attn: NATZ P.O.

Filing fee

You can find the filing fee for Form N-600K by visiting our Fee Schedule page.

Initial evidence

Do not send original documents unless specifically requested in the form instructions. 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); Proof of legal custody (only required for applicants whose parents divorced and/or legally separated and for applicants who are adopted); and Proof of child residing in the physical custody of the U.S. citizen parent(s). 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;

USCIS filing tips

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.

Special instructions

E-Notification: If you want to receive an e-mail and/or a text message that we have accepted your form at a USCIS lockbox, complete Form G-1145, E-Notification of Application/Petition Acceptance, and clip it to the first page of your form. Attorney or representative: You may be represented, at no expense to the U.S. government, by an attorney or other duly authorized or accredited representative.

Your representative must submit Form G-28, Notice of Entry of Appearance as Attorney or Accredited Representative, with your Form N-600K. They may also submit Form G-28 at the time of your interview.