County Dewey is located in the state of South Dakota. Dewey is spread between the coordinates of +45.0034228 Latitude and -101.20913390 Longitude. Dewey has 8 zip codes, 7 cities, 1 area code and 3 post offices.
Below you will find more info about Dewey and also zip codes, cities, area codes and the post offices that belong to this county.