Amherst Zip Codes - Marshall County SD

Amherst, SD Zip Code Map

Amherst, SD is a city located in Marshall County, South Dakota and has a land area of 33.34 square miles (86.35 km2). The water area for the city is 0.09 square miles or 0.23 km2. There is one unique zip code in Amherst, South Dakota and it is 57421. The area code(s) for Amherst is 605.

Zip Codes for Amherst, SD (1)
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57421 Amherst Marshall

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