ZIP Code 57640 is located in the county of Perkins in the state of South Dakota. 57640 ZIP Code is spread between the coordinates of +45.7925253 Latitude and -102.73678969 Longitude. 57640 ZIP Code is part of the 605 area code. There are 0 postal offices in zip code 57640.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 57640. 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.