Peoria County Illinois is covered by a total of 47 ZIP Codes. There are 8 ZIP Codes in Peoria County that extend into adjacent counties (Fulton County, Knox County, Marshall County, and Stark County). Of the ZIP codes within or partially within Peoria County there are 22 Standard ZIP Codes, 12 Unique ZIP Codes and 12 PO Box ZIP Codes.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Peoria County and can be turned on and off. Each type of postal code can also be turned on and off.