Where Do You Mail an N-400 Application for Naturalization To?
According U.S. Citizenship and Immigration Services in 2015, express mail deliveries of the N-400 naturalization form should be sent to USCIS, Attn: N-400, 1820 E. Skyharbor Circle S, Suite 100, Phoenix, AZ 85034. For standard mailing options, consult the U.S. Citizenship and Immigration Services website for state-specific addresses.
The N-400 form is one of 10 steps in the U.S. naturalization process, according to U.S. Citizenship and Immigration Services. The form must be accompanied by two passport photos and all documents demonstrating the applicant's naturalization eligibility. U.S. Citizenship and Immigration Services warns applicants to ensure that the correct name, date of birth, country of birth and mailing address are listed on the document.