ZIP Code 83421 is located in the county of Fremont in the state of Idaho. 83421 ZIP Code is spread between the coordinates of +43.9998525 Latitude and -111.55475136 Longitude. 83421 ZIP Code is part of the 208 area code. There is 1 postal office in zip code 83421.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 83421. Always when you mail a package or a letter, be attentive to mention the preferred or acceptable cities. Using any city in the list of unacceptable cities may result in unforseen delays.