Direct Filing Addresses for Form N-400, Application for Naturalization
Alert: Before sending your package to USCIS, make sure that all the forms you have completed are the current acceptable edition. The current acceptable edition can be found under the Edition Date section listed on each form’s webpage.
You can also find the edition date at the bottom of the page on the form and instructions. For each form that you are submitting, make sure that all pages are from the same form edition. If any of the form’s pages are from a different form edition, we may reject your form. Watch USCIS Forms: Download the most recent version! to see how to ensure your form is acceptable.
For additional guidance on filing paper-based forms at the Lockbox and how to avoid or correct common errors before you file, please visit the Five Steps to File at the USCIS Lockbox webpage.
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: |
|---|---|
| USCIS Chicago Lockbox U.S. Postal Service (USPS): USCIS FedEx, UPS, or DHL deliveries: USCIS |
| See the “Initial Parole Document (for aliens who are currently outside the United States)” section of our 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): |
| 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 FedEx, UPS, and DHL deliveries: USCIS |
| Arkansas Louisiana Oklahoma Texas | USCIS Dallas Lockbox U.S. Postal Service (USPS): USCIS FedEx, UPS, and DHL deliveries: USCIS |
| Illinois Indiana Iowa Michigan Missouri Ohio Wisconsin | USCIS Chicago Lockbox U.S. Postal Service (USPS): USCIS FedEx, UPS, and DHL deliveries: USCIS |