ZIP Code 57421
About Amherst
Amherst is an unincorporated community in Marshall County, South Dakota, United States.
From Wikipedia — text licensed CC BY-SA 4.0.
Area Profile
US Census (ACS 5-year · Gazetteer)
75
population
2
people / sq mi
16.3
median age
24
housing units
16
households
33.3
land area (sq mi)