There are two ways of submitting your N-400 application with USCIS –
Online or By Mail
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.
| f 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 US Postal Service USCIS P.O. Box 21251 Phoenix, AZ 85036 For FedEx, UPS, and DHL deliveries: USCIS Attn: N-400 1820 E. Sky Harbor Circle S Suite 100 Phoenix, AZ 85034 |
| 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 | For US Postal Service USCIS P.O. Box 660060 Dallas, TX 75266 For FedEx, UPS, and DHL deliveries: USCIS Attn: N-400 Texas Service Center 6046 N Belt Line Rd. Irving, TX 75038-0001 |
| If you live in: | Mail your form to: |
|---|---|
| Illinois, Indiana, Wisconsin, Iowa, Michigan, Minnesota, Ohio, Missouri, Pennsylvania | For US Postal Service 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 |
