ZIP Code 57421
Amherst, South Dakota · Marshall County
No25421
Zip57421
TypeSTANDARD
Decommissioned0
Primary CityAmherst
Acceptable Cities—
Unacceptable Cities—
StateSD
LstateSouth Dakota
CountyMarshall County
TimezoneAmerica/Chicago
Area Codes605
World RegionNA
CountryUS
Latitude45,73
Longitude-97,92