A United States citizenship application is filed on USCIS form N-400 (Application for Naturalization) by mailing the completed forms and required documents to one of two lock box facilities, based upon the applicant’s state of residence. After the citizenship application is processed, the local USCIS office will schedule a citizenship interview and complete the naturalization process. Citizenship application processing times will vary by local office.
- Alabama – A citizenship application for an Alabama resident should be mailed to the lockbox facility in Texas
- Alaska – A citizenship application for an Alaska resident should be mailed to the lockbox facility in Arizona
- Arizona – A citizenship application for an Arizona resident should be mailed to the lockbox facility in Arizona
- Arkansas – A citizenship application for an Arkansas resident should be mailed to the lockbox facility in Texas
- California – A citizenship application for a California resident should be mailed to the lockbox facility in Arizona
- Colorado – A citizenship application for a Colorado resident should be mailed to the lockbox facility in Arizona
- Connecticut – A citizenship application for a Connecticut resident should be mailed to the lockbox facility in Texas
- Delaware – A citizenship application for a Delaware resident should be mailed to the lockbox facility in Texas
- District of Columbia (DC) – A citizenship application for a District of Columbia (DC) resident should be mailed to the lockbox facility in Texas
- Florida – A citizenship application for a Florida resident should be mailed to the lockbox facility in Texas
- Georgia – A citizenship application for a Georgia resident should be mailed to the lockbox facility in Texas
- Hawaii – A citizenship application for a Hawaii resident should be mailed to the lockbox facility in Arizona
- Idaho - A citizenship application for an Idaho resident should be mailed to the lockbox facility in Arizona
- Illinois – A citizenship application for an Illinois resident should be mailed to the lockbox facility in Arizona
- Indiana - A citizenship application for an Indiana resident should be mailed to the lockbox facility in Arizona
- Iowa – A citizenship application for an Iowa resident should be mailed to the lockbox facility in Arizona
- Kansas – A citizenship application for a Kansas resident should be mailed to the lockbox facility in Arizona
- Kentucky – A citizenship application for a Kentucky resident should be mailed to the lockbox facility in Texas
- Louisiana – A citizenship application for a Louisiana resident should be mailed to the lockbox facility in Texas
- Maine – A citizenship application for a Maine resident should be mailed to the lockbox facility in Texas
- Maryland – A citizenship application for a Maine resident should be mailed to the lockbox facility in Texas
- Massachusetts – A citizenship application for a Massachusetts resident should be mailed to the lockbox facility in Texas
- Michigan – A citizenship application for a Michigan resident should be mailed to the lockbox facility in Arizona
- Minnesota – A citizenship application for a Minnesota resident should be mailed to the lockbox facility in Arizona
- Mississippi – A citizenship application for a Mississippi resident should be mailed to the lockbox facility in Texas
- Missouri - A citizenship application for a Missouri resident should be mailed to the lockbox facility in Arizona
- Montana – A citizenship application for a Montana resident should be mailed to the lockbox facility in Arizona
- Nebraska – A citizenship application for a Nebraska resident should be mailed to the lockbox facility in Arizona
- Nevada – A citizenship application for a Nevada resident should be mailed to the lockbox facility in Arizona
- New Hampshire – A citizenship application for a New Hampshire resident should be mailed to the lockbox facility in Texas
- New Jersey – A citizenship application for a New Jersey resident should be mailed to the lockbox facility in Texas
- New Mexico – A citizenship application for a New Mexico resident should be mailed to the lockbox facility in Texas
- New York – A citizenship application for a New York resident should be mailed to the lockbox facility in Texas
- North Carolina – A citizenship application for a North Carolina resident should be mailed to the lockbox facility in Texas
- North Dakota – A citizenship application for a North Dakota resident should be mailed to the lockbox facility in Arizona
- Ohio – A citizenship application for an Ohio resident should be mailed to the lockbox facility in Arizona
- Oklahoma – A citizenship application for an Oklahoma resident should be mailed to the lockbox facility in Texas
- Oregon – A citizenship application for an Oregon resident should be mailed to the lockbox facility in Arizona
- Pennsylvania – A citizenship application for a Pennsylvania resident should be mailed to the lockbox facility in Texas
- Rhode Island – A citizenship application for a Rhode Island resident should be mailed to the lockbox facility in Texas
- South Carolina – A citizenship application for a South Carolina resident should be mailed to the lockbox facility in Texas
- South Dakota – A citizenship application for a South Dakota resident should be mailed to the lockbox facility in Arizona
- Tennessee – A citizenship application for a Tennessee resident should be mailed to the lockbox facility in Texas
- Texas – A citizenship application for a Texas resident should be mailed to the lockbox facility in Texas
- Utah – A citizenship application for a Utah resident should be mailed to the lockbox facility in Arizona
- Vermont – A citizenship application for a Vermont resident should be mailed to the lockbox facility in Texas
- Virginia – A citizenship application for a Virginia resident should be mailed to the lockbox facility in Texas
- Washington – A citizenship application for a Washington resident should be mailed to the lockbox facility in Arizona
- West Virginia – A citizenship application for a West Virginia resident should be mailed to the lockbox facility in Texas
- Wisconsin – A citizenship application for a Wisconsin resident should be mailed to the lockbox facility in Arizona
- Wyoming – A citizenship application for a Wyoming resident should be mailed to the lockbox facility in Arizona
- Guam – A citizenship application for a Guam resident should be mailed to the lockbox facility in Arizona
- Northern Mariana Islands – A citizenship application for an Northern Mariana Islands resident should be mailed to the lockbox facility in Arizona
- Puerto Rico – A citizenship application for a Puerto Rico resident should be mailed to the lockbox facility in Texas
- U.S. Virgin Islands – A citizenship application for a US Virgin Islands resident should be mailed to the lockbox facility in Texas
Arizona
USCIS
P.O. Box 21251
Phoenix, AZ 85036
Express/Courier:
USCIS
Attn: N-400
1820 E Skyharbor Circle S
Suite 100
Phoenix, AZ 85034
Texas
USCIS
P.O. Box 660060
Dallas, TX 75266
Express/Courier:
USCIS
Attn: N-400
2501 S State Hwy 121
Suite 400
Lewisville, TX 75067
Military Applications
If filing from N-400 under INA 328 or INA 329, file at the Nebraska Service Center regardless of where you reside:
Nebraska Service Center
P.O. Box 87426,
Lincoln NE 68501-7426
Updated: 12/17/09
The above is provided for convenience purposes only. The information is subject to change and this website does not update on a routine basis. You are cautioned not to take, or refrain from taking, action based upon the contents of the information contained here. Always refer to a primary, governmental source to confirm that you have the most up-to-date information.
Bookmark or share this page:
The above is provided for convenience purposes only. Immigration law is constantly changing and this website does not update content to reflect changes on a routine basis. You are cautioned not to take, or refrain from taking, action based upon the contents of the information contained here. Always refer to a primary, governmental source or US immigration attorney to confirm that you have the most up-to-date information.
We represent clients in US Immigration cases from ALL 50 STATES and AROUND THE WORLD, as most immigration representation can be handled electronically and through the mail. If your case does require the physical presence of an immigration attorney, we are able to come to you, no matter where in the US you are!
