Otter Tail County Minnesota is covered by a total of 33 ZIP Codes. There are 15 ZIP Codes in Otter Tail County that extend into adjacent counties (Becker County, Cass County, Clay County, Douglas County, Grant County, Hubbard County, Todd County, Wadena County, and Wilkin County). Of the ZIP codes within or partially within Otter Tail County there are 31 Standard ZIP Codes and 1 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 Otter Tail County and can be turned on and off. Each type of postal code can also be turned on and off.