Peoria County has NEW Address Request Form that will allow a citizen to receive a new or corrected 9-1-1 address, hyperlink: Peoria County Address Request Form (arcgis.com) New addresses can be assigned to new buildings buildings receiving a utility service, duplexes, apartments, substations, and towers. A 9-1-1 address can be modified if proven to be in error or inaccurate. Citizens are responsible to provide their new or corrected 9-1-1 address to their local US Post Office to continue receiving mail. The new 9-1-1 address will be required before a building permit application can be submitted to the local Planning/Zoning department. After a form has been submitted, Peoria County GIS will contact the requestor. Additionally, this form is only for properties outside of the City of Peoria and the City of Chillicothe.