Barnstable County Massachusetts is covered by a total of 55 ZIP Codes. There are 1 ZIP Codes in Barnstable County that extend into adjacent counties ( and Plymouth County). Of the ZIP codes within or partially within Barnstable County there are 36 Standard ZIP Codes and 18 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 Barnstable County and can be turned on and off. Each type of postal code can also be turned on and off.