Zip Code 57421 - Amherst, Marshall, SD, United States
Zip Code 57421 Data
| Zip Code | 57421 |
|---|---|
| Area 1 (City, County) | Amherst, Marshall |
| Area 2 (City, County) | Amherst, Brown |
| State | South Dakota |
| State FIPS | 46 |
| Latitude | 45.733301 |
| Longitude | -97.916986 |
| Timezone | 6 |
| Daylight | Yes |
| Country | United States |