Illinois Notification Of Change Of address Or Personal Information is a process required by the state of Illinois for individuals or businesses to provide updated information when their address or personal information changes. It is important to keep this information current and up to date in order to protect the rights and interests of all involved. There are two types of Illinois Notification Of Change Of address Or Personal Information: Change of Address and Change of Personal Information. The Change of Address notification is used to inform the state of Illinois when an individual or business moves to a new address. This form requires the individuals or businesses to provide the new address, the date of the change, and the reason for the move. The Change of Personal Information notification is used to inform the state of Illinois when an individual or business changes their name, contact information, or other personal information. This form requires the individuals or businesses to provide the updated information, the date of the change, and the reason for the change.