Where do I send N400?

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

Online, or
By mail (paper).

For either options the applicant must create an online account with USCIS that allows them to check status as well as receive notifications. It is also an efficient way to respond to requests for additional documentation. Having an online account allows you to expedite information exchange without getting put back in the queue.

Online submission:
The applicant may submit his application on the USCIS website once he has set up the above mentioned personal account.

By Mail:
There are three different PO Boxes and addresses assigned for different pockets of states within the US. Refer to the table below to see which address may be applicable to you.

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
For U.S. Postal Service (USPS):

USCIS
P.O. Box 21251
Phoenix, AZ 85036


For FedEx, UPS, and DHL deliveries:

USCIS
Attn: N-400
1820 E. Skyharbor Circle S
Suite 100
Phoenix, AZ 85034
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
For U.S. Postal Service (USPS):

USCIS
P.O. Box 660060
Dallas, TX 75266


For FedEx, UPS, and DHL deliveries:

USCIS
Attn: N-400
2501 S State Hwy 121 Business
Suite 400
Lewisville, TX 75067
Illinois
Indiana
Wisconsin
Iowa
Michigan
Minnesota
Ohio
Missouri
Pennsylvania
For U.S. Postal Service (USPS):

USCIS
P.O. Box 4380
Chicago, IL 60680-4380


For FedEx, UPS, and DHL deliveries:

USCIS
Attn: N-400
131 S. Dearborn, 3rd Floor
Chicago, IL 60603-5517
Table showing the N-400 Filling Address according to States

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:

For U.S. Postal Service (USPS):

          USCIS
          P.O. Box 4446
          Chicago, IL 60680-4446

For FedEx, UPS, or DHL deliveries:

          USCIS
          Attn: Military N-400
          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.  USCIS will process your application even if you do not create an online account, but we encourage you to create and access your online account.

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