Send your N-400 application and supporting documents to the Service Center having jurisdiction over your place of residence.
The planned change of filing location to the Chicago Lockbox has been postponed. Please see the USCIS Update in the Related Links section of this page.
If you live in AZ, CA, HI, NV, Territory of Guam, or the Commonwealth of the Northern Mariana Islands, send your N-400 application to:
California Service Center
PO Box 10400
Laguna Niguel, CA 92607-1040
If you live in AK, CO, ID, IL, IN, IA, KS, MI, MO, MN, MT, NE, ND, OH, OR, SD, UT, WA, WI or WY, send your N-400 application to:
Nebraska Service Center
PO Box 87400
Lincoln, NE 68501-7400
If you live in AL, AR, FL, GA, KY, LA, MS, NM, NC, OK, SC, TN or TX, send your N-400 application to:
Texas Service Center
PO Box 851204
Mesquite, TX 75185-1204
If you live in CT, DE, District of Columbia, ME, MD, MA, NH, NJ, NY, PA, RI, VT, VA, WV, Commonwealth of Puerto Rico, or the U.S. Virgin Islands, send your N-400 application to:
Vermont Service Center
75 Lower Welden St
St. Albans, VT 05479-9400
All naturalization applicants filing under the military provisions, section 328 or 329, should file their application at the Nebraska Service Center regardless of geographic location or jurisdiction. Please send your application to:
Nebraska Service Center
P.O. Box 87426
Lincoln, NE 68501-7426
Expiration Dates:
The current Form N-400 (October 15, 2007 edition labeled "OMB No. 1615-0052) shows an expiration date of October 31, 2008.
Until a new edition of the N-400 is available, applicants should not be concerned that their application will be rejected due to using an expired edition of the form.
Please continue to check this page regularly for updates.
Please note: You will need Adobe Reader version 7.0.5 or higher to use this form. You can download the latest version of Adobe Reader without cost at the Related Link "Adobe Reader"
Please note: The Instructions to Form N-400 frequently refer to information in the USCIS document A Guide to Naturalization, M-476. We encourage you to review those referenced sections of the Guide as you complete this form.
This version of the N-400, Application for Naturalization, is available below in two files - the instructions and the form itself.
We recommend that you download the form directly to your local computer, rather than fill it out through your web browser. Using a Windows PC, "right-click" on the link to the fillable form and select "Save Link As" (in Netscape) or "Save Target As" (in Internet Explorer) and work from the copy you save to your hard drive.
Note on Filing Fee:
Fees are accepted in the form of money order, personal check or cashiers check only. Checks should be made payable to Department of Homeland Security or U.S. Citizenship and Immigration Services.
This page can be found at http://www.uscis.gov/n-400
