Let's review. In order to apply to become a U.S. citizen, there are eight general requirements. First, applicants must be at least 18 years of age. In general, applicants must also be a lawful permanent resident of the U.S. and have continuous residence for at least five years.How do you apply for US citizenship application?
Complete the citizenship application. Download form N-400 from www.USCIS.gov (click "Forms"). Fill in the form completely, answering all the questions. If you miss anything, your application may be delayed or denied, and you will likely have to proceed with an appeal.How do you file for US citizenship?
If you are eligible, you can apply for US citizenship by completing and filing Form N-400, Application for Naturalization. You will need to submit the form along with two passport-style photographs and supporting documents to the appropriate USCIS office.