Navigating the U.S. citizenship process requires precision, especially when it comes to official procedures like submitting your N-400 form. One of the most critical steps, yet one of the most commonly misunderstood, is ensuring your application reaches the correct USCIS mailing address. Sending your completed N-400, Application for Naturalization, to the wrong location can result in significant delays, misplaced documents, and unnecessary stress during an already complex journey. This guide provides the definitive information you need to mail your N-400 correctly and avoid common pitfalls.
Why the Correct Address Matters for Your N-400
The United States Citizenship and Immigration Services (USCIS) operates multiple service centers across the country, each responsible for specific geographic regions and case types. The N-400 has no filing fee, but it must be submitted to the appropriate lockbox facility designated for the place where you live. Sending your application to the wrong address is one of the leading causes of processing delays. A misplaced file can sit in a general inbox for weeks before being rerouted, costing you valuable time in your path to naturalization. Understanding the exact routing for your specific location is the first step in a smooth submission.
Determining Your Correct Service Center
Because the N-400 is mailed and not filed online, the destination is determined by your state of residence, not by the city of your local USCIS office. The agency has consolidated its operations into a few primary centers that handle mail from specific states and territories. To find your exact address, you must first identify which region you live in. Below is a breakdown of the current service centers and the states they serve, ensuring you send your packet to the correct hub.
Current USCIS Lockbox Addresses for 2024
Once you have identified your service center based on the table above, you can use the corresponding lockbox address. These addresses are specifically designed to handle high volumes of mail and ensure your application enters the processing stream as efficiently as possible. Please double-check that your state matches the region before sealing your envelope.
For Applicants in California, Hawaii, Nevada, and Associated Territories
If you reside in California, Hawaii, or Nevada, or if you are an applicant in American Samoa, Guam, or the Northern Mariana Islands, your form must go to the California Service Center. Use the following address to ensure your N-400 is routed correctly:
USCIS California Service Center Attn: N-400 Lockbox 111 East 14th Street San Francisco, CA 94103-1113
For Applicants in Texas
Applicants who live in the state of Texas must direct their N-400 packets to the Texas Service Center. Note that this is the only state with its own dedicated center, making it unique in the processing network. Use the address below for your submission:
