Form N-600Application for Certificate of Citizenship

You have two options for filing your Form N-600 with USCIS:

Online, using an electronic application form; or

By mail, using a paper application form.

1. Filing your Form N-600 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-600 online. Please see section 2 below for how to file your form by mail.

You must create an online account to file your Form N-600 online. Through your online account, you can:

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 all of their clients’ applications in one place.

2.  Filing your Form N-600 by mail

If you file on paper, are applying from outside the United States, are a member or veteran of any branch of the U.S. military filing on your own behalf, or are applying for a fee waiver, you must mail your application to USCIS using one of the listed mailing addresses:

If you live in: Then, mail your form to:

Alaska

American Samoa

Arizona

Armed Forces - Europe

Armed Forces - Pacific

California

Colorado

Commonwealth of the Northern Mariana Islands

Guam

Hawaii

Marshal Islands

Micronesia

Nevada

New Mexico

Palau

Texas

Utah

Outside of the U.S.

USCIS Phoenix Lockbox

U.S. Postal Service (USPS):

USCIS

Attn: NATZ

P.O. Box 20100

Phoenix, AZ 85036

FedEx, UPS, and DHL deliveries:

USCIS

Attn: NATZ (Box 20100)

2108

E. Elliot Rd.

​​​​​​​Tempe, AZ 85284-1806

Alabama

Arkansas

Armed Forces - America

Connecticut

Delaware

District of Columbia

Florida

Georgia

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

New Hampshire

New Jersey

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Puerto Rico

Rhode Island

South Carolina

South Dakota

Tennessee

U.S. Virgin Islands

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

USCIS Elgin Lockbox

U.S. Postal Service (USPS):

USCIS

Attn: NATZ

P.O. Box 4088

Carol Stream, IL  60197-4088

FedEx, UPS, and DHL deliveries:

USCIS

Attn: NATZ (Box 4088)

2500 Westfield Drive

Elgin, IL 60124-7836

If you submit Form N-600 on paper, you will receive a USCIS Account Accept

Filing Tips for Form N-600, Application for Certificate of Citizenship

Complete all sections of the form and submit all related documentation. We will reject the form if these fields are missing:

Part 1 – Information About Your Eligibility

Check only ONE box in Part 1 Question

1. If you check multiple boxes in Part 1 Question 1., USCIS will reject your Form N-600 and return it to you for correction and re-filing.

Check only ONE box in Part 1 Question

2. If you check multiple boxes in Part 1 Question 2., USCIS will reject your Form N-600 and return it to you for correction and re-filing.

Part 2 Information about You (Child of a U.S. Citizen)

Family Name

Date of Birth

Current Mailing Address

If you are a parent or legal guardian completing Form N-600 for a child younger than 14 years of age, you must sign in Part 8.

If you are completing Form N-600 for an applicant, you must complete and sign the designated section in Part 10. Contact Information, Declaration, and Signature of the Person Preparing this Application, if Other Than the Applicant, Parent, or Legal Guardian.

Filing Tips: Review our Tips for Filing Forms by Mail page for information on how to ensure we will accept your form.

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

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