Larimer County Colorado is covered by a total of 31 ZIP Codes. There are 11 ZIP Codes in Larimer County that extend into adjacent counties (Boulder County, and Weld County). Of the ZIP codes within or partially within Larimer County there are 23 Standard ZIP Codes, 2 Unique ZIP Codes and 6 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 Larimer County and can be turned on and off. Each type of postal code can also be turned on and off.