The Illinois Petition For Change of Name is a legal document used to change the name of an individual or a minor in the state of Illinois. This petition is filed in the Circuit Court of the county where the petitioner resides. This petition must be signed in front of a notary public and must include the current name of the petitioner, the desired name, and the reason for the change. The types of Illinois Petition For Change of Name include Petition for Change of Name for an adult as well as Petition for Change of Name for a Minor.