What US Citizenship and Immigration Services form is used to apply for naturalized citizenship?

Answer:
The form that is used to for this is Form N-400

N-400 is used to apply for naturalization.A person who wants to get naturalized as a US citizen should make use of this form. N-600 is used to obtain certificate of citizenship through US citizen parent/s.
First answer by Realmadrid9. Last edit by Jessicapotter24. Contributor trust: 2 [recommend contributor recommended]. Question popularity: 1 [recommend question].