Franklin County Pennsylvania is covered by a total of 33 ZIP Codes. There are 5 ZIP Codes in Franklin County that extend into adjacent counties (Adams County, Cumberland County, and Fulton County). Of the ZIP codes within or partially within Franklin County there are 21 Standard ZIP Codes and 11 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 Franklin County and can be turned on and off. Each type of postal code can also be turned on and off.