Illinois Petition (Request) Name Change (adult) is a legal document that allows adults to change their name in the state of Illinois. There are two types of name change petitions for adults in Illinois: one for changing a name to any name of the petitioner’s choice, and one for restoring a former name. To file for a name change, an individual must fill out the applicable petition, pay the filing fee, and submit the petition to the court in the county where they reside. The petitioner must provide proof of identity, residency, and the reason for the name change. Once the petition is approved, the individual will receive a court order that must be published in the local newspaper and then submitted to the various government offices and organizations that need to be notified of the change. In order to complete the process, the petitioner must also submit a certified copy of the name change order to the applicable government offices and organizations.