Rockingham County New Hampshire is covered by a total of 45 ZIP Codes. There are 4 ZIP Codes in Rockingham County that extend into adjacent counties (Hillsborough County, Merrimack County, and Strafford County). Of the ZIP codes within or partially within Rockingham County there are 35 Standard ZIP Codes, 1 Unique ZIP Codes and 8 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 Rockingham County and can be turned on and off. Each type of postal code can also be turned on and off.