Hartford County Connecticut is covered by a total of 107 ZIP Codes. There are 2 ZIP Codes in Hartford County that extend into adjacent counties (Litchfield County, and Middlesex County). Of the ZIP codes within or partially within Hartford County there are 56 Standard ZIP Codes, 16 Unique ZIP Codes and 35 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 Hartford County and can be turned on and off. Each type of postal code can also be turned on and off.