Waukesha County Wisconsin is covered by a total of 33 ZIP Codes. There are 7 ZIP Codes in Waukesha County that extend into adjacent counties (Dodge County, Jefferson County, Racine County, Walworth County, and Washington County). Of the ZIP codes within or partially within Waukesha County there are 26 Standard ZIP Codes and 6 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 Waukesha County and can be turned on and off. Each type of postal code can also be turned on and off.