ZIP Code 57660 is located in the county of Grant in the state of South Dakota. 57660 ZIP Code is spread between the coordinates of +45.8903631 Latitude and -101.56766198 Longitude. 57660 ZIP Code is part of the 605 area code. There are 0 postal offices in zip code 57660.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 57660. 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.