Hampden County Massachusetts is covered by a total of 55 ZIP Codes. There are 5 ZIP Codes in Hampden County that extend into adjacent counties (Berkshire County, Hampshire County, and Worcester County). Of the ZIP codes within or partially within Hampden County there are 38 Standard ZIP Codes, 2 Unique ZIP Codes and 14 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 Hampden County and can be turned on and off. Each type of postal code can also be turned on and off.