Carroll County New Hampshire is covered by a total of 32 ZIP Codes. There are 7 ZIP Codes in Carroll County that extend into adjacent counties (Belknap County, Coos County, Grafton County, and Strafford County). Of the ZIP codes within or partially within Carroll County there are 27 Standard ZIP Codes and 4 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 Carroll County and can be turned on and off. Each type of postal code can also be turned on and off.