Where do I send my N-400?

Recently I was asked about the proper address for the N-400. Why are there two addresses for each region? Most Express Mail or Courier companies (ie FedEX, UPS, DHL, etc) will not deliver to a PO Box. If an applicant wants to send their N-400 via Express Mail, USCIS provides a street address for each region. If an applicant send his/her N-400 via US mail (USPS), they must add extra postage because the package weighs more than an ounce**. Put in the large envelope:

1. the N-400
2. 2 passport-sized photos
3. a copy of the front and back of the legal Permanent Resident Card
4. plus a check for $675*

Some people also add a return receipt and insurance. Before you put the N-400 in the envelope, MAKE TWO COPIES OF YOUR N-400 (the first for back-up, the second for practice. TAKE THE SSN OFF THE PRACTICE COPY). 

UPDATED 09-21-2021

Where to File

You generally have two options for filing your Form N-400 with USCIS:

• Online, or
• By mail (paper).

Filing your Form N-400 online

You must create a USCIS online account to file your Form N-400 online. Having an online account will also allow you to:

• Pay your filing fee online;
• Check the status of your case;
• Receive notifications and case updates;
• View personalized case completion date estimates;
• Respond to requests for evidence; and
• Manage your contact information, including updating your address.

Note for Attorneys and Accredited Representatives: You can also create an online account, which will allow you to manage all of your clients’ applications in one place.

Filing your Form N-400 by mail

If you are applying based on being a current or former member of the military, a spouse of a current member of the military, or a close relative of a deceased member of the military, do not use this chart. Go to section 3 below to see where you must mail your form.

All other applicants must use the chart below.

If you submit Form N-400 on paper, you will receive a USCIS Account Acceptance Notice in the mail 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 live in:	Mail your form to:
Alaska Arizona California Colorado Micronesia Guam Hawaii Idaho Kansas Mariana Islands Montana North Dakota Nebraska Nevada Oregon 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) 1820 E. Skyharbor Circle S Suite 100 Phoenix, AZ 85034-4850
If you live in:	Mail your form to:
Alabama Arkansas Connecticut District. Of Columbia Delaware Florida Georgia Kentucky Louisiana Massachusetts Maryland Maine Mississippi North Carolina New Hampshire New Jersey New Mexico New York Oklahoma Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Virginia Virgin Islands Vermont West Virginia	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
If you live in:	Mail your form to:
Illinois Indiana Wisconsin Iowa Michigan Minnesota Ohio Missouri Pennsylvania	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

Military Members

If you are applying based on being a current or former member of the military; a spouse of a current member of the military; or a spouse, parent or child of a deceased member of the military, you may file your Form N-400 online or by mail. If you choose to file by mail, send your application to the location listed below:

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

If you submit Form N-400 on paper, you will receive a USCIS Account Acceptance Notice in the mail 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.

Filing Tips: Go to our Form Filing Tips page for information on how to help ensure we will accept your application.

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