ZIP code 57421 is located in Amherst, South Dakota. This area is part of the SD postal region.
Amherst is served by ZIP code 57421. The timezone for this area is America/Chicago.
57421 Overview
Amherst, South Dakota
ZIP BOUNDARY
Geographic Information
STATE
South Dakota (SD)
CITY
Amherst
TIMEZONE
America/Chicago
COORDINATES
45.7505, -97.9062
About ZIP Code 57421
Frequently Asked Questions
What city is ZIP code 57421 in?
57421 is in Amherst, South Dakota.
What state is 57421 in?
ZIP code 57421 is in South Dakota (SD).
What is the timezone for 57421?
The timezone is America/Chicago.
Data Disclaimer
Data is for informational purposes only. Please verify through official sources like USPS.