Johnson County Kansas is covered by a total of 46 ZIP Codes. There are 5 ZIP Codes in Johnson County that extend into adjacent counties (Douglas County, Miami County, and Wyandotte County). Of the ZIP codes within or partially within Johnson County there are 34 Standard ZIP Codes, 3 Unique ZIP Codes and 9 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 Johnson County and can be turned on and off. Each type of postal code can also be turned on and off.