Direct Filing Addresses for Form N-400, Application for Naturalization

When you submit Form N-400 on paper, we will mail you a USCIS Account Acceptance Notice with instructions on how to create an online account to track and manage your case. We will process your application even if you do not create an online account, but we encourage you to create and access your online account. We will continue to mail you copies of notifications about your case.

If you are applying based on:	Mail your form to:
Being a current or former member of the military; Being a spouse of a current member of the military; or Being a spouse, parent or child of a deceased member of the military	USCIS Chicago Lockbox U.S. Postal Service (USPS): USCIS Attn: Military N-400 P.O. Box 4446 Chicago, IL 60680-4446 FedEx, UPS, or DHL deliveries: USCIS Attn: Military N-400 (Box 4446) 131 S. Dearborn, 3rd Floor Chicago, IL 60603-5517
Being a current or former service member residing outside of the United States and you are applying for an advance parole document at the same time you file your Form N-400	See the “Advance Parole Document for current and former service members outside of the U.S.” section of our Direct Filing Addresses for Form I-131, Application for Travel Document page.

If you are applying based on:

Mail your form to:

Being a current or former member of the military;
Being a spouse of a current member of the military; or
Being a spouse, parent or child of a deceased member of the military

USCIS Chicago Lockbox

U.S. Postal Service (USPS):

USCIS
Attn: Military N-400
P.O. Box 4446
Chicago, IL 60680-4446

FedEx, UPS, or DHL deliveries:

USCIS
Attn: Military N-400 (Box 4446)
131 S. Dearborn, 3rd Floor
Chicago, IL 60603-5517

Being a current or former service member residing outside of the United States and you are applying for an advance parole document at the same time you file your Form N-400

See the “Advance Parole Document for current and former service members outside of the U.S.” section of our Direct Filing Addresses for Form I-131, Application for Travel Document page.

If you live in:	Mail your form to:
Connecticut Delaware District of Columbia Florida Georgia Maine Maryland Massachusetts New Hampshire New Jersey New York North Carolina Pennsylvania Rhode Island South Carolina Vermont Virginia West Virginia	USCIS Elgin Lockbox U.S. Postal Service (USPS): USCIS Attn: N-400 P.O. Box 4060 Carol Stream, IL 60197-4060 FedEx, UPS, and DHL deliveries: USCIS Attn: N-400 (Box 4060) 2500 Westfield Drive Elgin, IL 60124-7836
Alabama Alaska American Samoa Arizona Armed Forces Americas Armed Forces Europe Armed Forces Pacific California Colorado Commonwealth of the Northern Mariana Islands Guam Hawaii Idaho Kansas Kentucky Marshall Islands Micronesia Minnesota Mississippi Montana Nebraska Nevada New Mexico North Dakota Oregon Palau Puerto Rico South Dakota Tennessee U.S. Virgin Islands Utah Washington Wyoming	USCIS Phoenix Lockbox U.S. Postal Service (USPS): USCIS Attn: N-400 P.O. Box 21251 Phoenix, AZ 85036-1251 FedEx, UPS, and DHL deliveries: USCIS Attn: N-400 (Box 21251) 2108 E. Elliot Rd. Tempe, AZ 85284-1806
Arkansas Louisiana Oklahoma Texas	USCIS Dallas Lockbox U.S. Postal Service (USPS): USCIS Attn: N-400 P.O. Box 660060 Dallas, TX 75266-0060 FedEx, UPS, and DHL deliveries: USCIS Attn: N-400 (Box 660060) 2501 S State Hwy 121 Business Suite 400 Lewisville, TX 75067-8003
Illinois Indiana Iowa Michigan Missouri Ohio Wisconsin	USCIS Chicago Lockbox U.S. Postal Service (USPS): USCIS Attn: N-400 P.O. Box 4380 Chicago, IL 60680-4380 FedEx, UPS, and DHL deliveries: USCIS Attn: N-400 (Box 4380) 131 S. Dearborn, 3rd Floor Chicago, IL 60603-5517

Last Reviewed/Updated:

03/30/2023